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  New server is windows running sql server , and I am using the same approach its odbc and oledb driver below on serverbdrivers. sql. I sometimes work with SSIS locally to import data from Excel and occasionally do demos with Power BI where I read from an Access database so I. The connection string that works on servera and not on serverb is Provider=;Extended Properties=Excel  

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This also has a practical side where the data will "eventually" end up in a true DB. However, I have a question: I downloaded the sample file, and was unable to run it because the ado library wasn't activated. If this file was shared with others, would they also have to enable the component in excel?

Is there a way to make this happen automagically tm? Do While Application. I also found that I can enable all the "ADO" libraries back to some point, say 2. They will show as "missing" if you look in your references, however the code will still run. Seems the original attempted to load 6. Now, with the others specified, it eventually found one that worked. I've never seen a better way to use Excel as a database than via Laurent Longre's Indirect.

Set up multiple Excel spreadsheets, populate the data, then consolidate them without opening them - I've used it many times and it's fool-proof Dates are on their right format on the cell. Thank for posting this thread. I used the excel sheet and ammended it according to my data.

Expected 1 in the line rs. Your SQL statement needs to be looked at. You may send me the file at sharma. I really am intrigued by this article, however I keep crashing the program when I save it. I tried the solution from Jose and am still getting the same errors.

The errors are below:. Try saving to a different file. When I try to save it to another file, I get the message: "The file you are trying to open, 'CF',is in a different format than specified by the file extension.

Verify that the file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now? I have the same problem. I have downloaded the demo file. When i change something in the data sheet and just click on the update dropdown button. It's not possible to save the file any more. I was wondering if you can help me. I tried to use a variable on my sql statement and it keeps getting an error. Technically this provides database like query facilities.

It's not providing database capability in excel, as a spreadsheet is incapable of being a database. A spreadsheet has no concept or ability to represent tuples and relationships between data with primary indexes. But then most people at work don't see any difference at all, and call a spreadsheet a database and vice-versa I must say i've seen some doozy formulas and spreadsheets, both the WTF kind and the kind where an inordinate amount of time and money was spent to create a spreadsheet, where something else would be much better and way more efficient.

However, you are assuming that, when a DB is needed, one is actually available to the user. Many times this is not the case, and the data for the spreadsheet is actually required to be contained in the spreadsheet itself.

I happen to be in this boat. I would much rather use proper tools for the job, they just aren't available. This is much better than just "well, can't be done. Rather than say, using a pipe wrench. At least is't in the same family. It won't be as effective, but it's not a complete hack like many of the examples you cite. The tool allows you to pre-validate data and quickly upload from Excel to database -and even send data to a stored procedure!

Well worth a look! PowerPivot for Excel is an add-in to Excel that provides the foundation to import and combine source data from any location for massive data analysis on the desktop, including relational databases, multidimensional sources, cloud services, data feeds, Excel files, text files, and data from the Web.

The data that you add to the workbook is stored internally, as an embedded PowerPivot database inside the. From a user perspective, key points are:.

It allows data people to quickly create mashups of disparate data source on the fly — including web data, text files, datawarehouse files, and excel tables — and serve it up as a pivottable. It extends the capability of Excel so that users can crunch, filter, sort millions of records with very low overhead, as well as incorporate both relational and non-relational data sources easily into analysis, using an interface they are already familiar with.

This addin extends the capability of Excel so much that it might well remove the organisational need for some of the other apps in some cases such as SAS and make their licencing costs disappear. Yes, I've been eyeing the PP plugin for some time now.

Our corp won't be migrating users to for some time though At least it gets us time to req an sql server though. What is the operating system installed on your system. This version is available from Windows Vista onwards. Now, if I could just get an example of "filtering" data, without using a pivot table, that supports multi-select filters.

I did something with some named ranges and checked boxes Jay - can you elaborate a bit more about what you are trying to do? I'm doing this because i've noticed that users spend significant amounts of time manualy filtering pivottables so that they match items in another data set. One problem with filtering pivottables is there might be tens of thousands of pivotitems in any one field, so iterating through them can take significant time. That said, I've found a very smart way to iterate through them, plus am developing another approach where I don't have to iterate through the collection at all.

However, for pivotfields with tens of thousands of items, filtering them with SQL will always be quicker. In addition to Jeff's comments I often will do a pre-filter first using an Advanced Filter to get rid of the bulk of non-important data. The powers that be want to be able to filter on about 6 of those at any given time. MOST of the filters are restricted to about a dozen or so, however there are a few that number closer to I've used a variety of vb and other techniques to link the filters, but of course copying those ish items to other pivot tables ultimately is time consuming.

I'd much rather use this sql technique, but I don't know how to support the multi-select. The most efficient i have done is to put the data for each of the "ish" into separate tabs, use sum-ifs on the main page, and move "out of scope" tabs outside the sum-if tab range, again a kludge but surprisingly the fastest method I think I could apply this method using a tree-view control as the input s rather than a select box In reality, we shouldn't be using excel as our presentation layer, but alas, we are!

Jay they want [the] ability to multi-select, all pivot filters linked to a master filter. If they have Excel , then slicers are a damn easy way to do this - assuming all pivots run off the same cache. That said, there's a way around that that I want to try out. Can you post a sample spreadsheet somewhere for me to have a look at? Yes, I'd love for them to move to , then I'd go with the Power Pivot plugin and move the data to an sql server that we should be getting soonish.

I have used the code you linked, or a variant. It's slow, but works. I actually use a different "hack" I have found a little faster for large filter sets, but it's not pretty. I have been looking at this method.

I like it, since 2 of the large filters are interdependant depending on what is set on 1, I can reduce the second filter choices significantly I just need to figure out an elegant way to do multi-select.

I think I have. I can, in theory use a TreeView control. The ListBox control with mulit-select also might work well, particularly for the "non-interdependent" filters. Then build up the SQL, probably with an "Apply" button.

I'll let you know if I get it to work well. HI, I am a novice on excel vba, i used to complete the task whatever assigned to me by searching google, on searching i found this link and it is very very useful. The query which i got was in the attachment attached in this post the product field got some product related information but if i put Date in its place it didn't filtered out!!.

Hi, i am completely untouched by programming if you dont count in some classes many years ago , and my goal is to create stock database. For filtering of what i have in stock and movements i can use yours tutorial to filter out data i need to see, but what about adding new rows to data sheet? It is possible to do it in some kind of dialogue box?

Thanks for help. Like jim said on I am also getting same errors repeatedly with some Alphanumeric Name generated excel file Is this due to using excel as database?? Why this type of errors are coming??

Please Clarify. Kindly share your workbook with me at sharma. Also the problem when you change something in the data sheet. Its giving me the old data. The database is not been reset or reloaded.

I found a workaround: Update the data sheet with your query than save close the file open the file and than update drop down. Can you provide me the VBA code to read from multilpe excel files to a single excel sheet Thanks, Binu. Thanks for sharing this work with us novices. I have modifed the combo box names to suit my data table but get run-time error, type mismatch when update dropdowns button is pressed.

EOF cmbCard. The content and headings are not exactly the same. Thank You very very very very very very very very very very very very very Muchhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh its really excellent. You are the best. I get so much out of your examples and explanations. I plan on signing up for your training in the next few months. But first I need some help for I project I a m working on. I have data tables in different tabs within the same workbook.

Assume no Access tables exist and that I have two scenarios for storing the Access tables: 1 I do this every month and want to keep the monthly access tables seperate. I have learn so much from your demo file- Excel as Datase. I have motified the vba code to fit my dataset for my work. However, I run to the problem when I try to save the file after clicking the "Show Data" button.

Please advise how I can fix the problem? Thank you. Cho07tom and Louis, Please look for blank records in the column that you are getting as a result of the SQL query, this is causing the issue. Please try the below code. Fields 0 Then cmbProducts.

I keep getting the error ODBC does not support the requested parametes error at the line rs. When I change to my own book, however, I get a when it is executing the cnn. For example, I need to select the 3rd and 4th columns of a sheet and do not want to give them a name as the sheets are from read-only work books which do not have named columns.

I see a lot of people saying Excel shouldn't be used as a DB yet they never say why. To me, it seems they just want to keep DB administration so complex that it becomes necessary to keep a DB admin on staff. Excel, is understood by a larger group of people and is more approachable. Access sometimes creates unnecessary duplication with multiple references spread out on multiple tables whereas with Excel, a simple common reference allows for a leaner DB.

So, good on you Vijay to put forward that Excel can be used as a DB. As long as you can archive rarely used data and then have ability to retreive it, there shouldn't be a problem. So for a very, very simple and small database system about records Excel will do.

I am a non-computer background, am doing a research in medical microbiology , i need a simple database with excel back end, can u send the details Sounds like you meant to say a simple database with excel Front End. Otherwise, since it sounds like you have office, you could use an access database and a data connection via MSQuery in excel. Please Vijay, can u be a little more step by step, as like in other tutorials on this site.

Thank you for the interest. I would also like to possibly add a macro for when I print my quote, to only save the Quotation worksheet and not the whole file, but also update the database automatically. The Database could also be used to pull information for invoicing purposes.

Would you require me to send through my workbook so you can get a better understanding of what I am talking about. How would I go about doing this? Your help will really be appreciated, Thanks. Can i buy a template for this ss? I have tried to create it, starting on the VBA and Macros stuff but couldnt even make a cell go red for some reason.

Awesome Job. I have question. When it putts data on sheet starting from row What is the easiest way to Sort by column I then G. Thanks a lot for sharing. My English is not my database. And therefore all its characters? What can I do? It does not recognize the nz function. Love this! Excel and TM1 Excel formulas are really the most common interface to that database.

Because of that and the fact that most of our work ends up being in Excel pages itself anyway, I can really see using this Excel as a Database functionality becoming really useful for so many posibilities.

This also will finally allow us not to bring in yet a third application platform like Access or Oracle in our Excel Datamarts. I undersood the logic of connecting the sheets but i didnt understand how to build the second sheet i. Please help me in building the second sheet I would highly recommend: 1.

Connection' or Private Each time you open a recordset, disconnect it. How many instances of the connection do you create??? At each place where you exit a sub, dispose the recordset!

This will help: 'Now putting the data on the sheet ActiveCell. End xlDown. PasteSpecial xlPasteFormats Application. Well, I fear some people may get confused. I prefer to give the whole code here. Connection If cnn. Clear cmbCustomerType. Clear cmbRegion. Clear Sheets "View".

Select Range "dataSet". Select Range Selection, Selection. ClearContents End Sub. If cmbRegion. Text "" Then If cmbProducts. If cmbCustomerType. Text "" Or cmbRegion. If cmbProducts. Text "" Or cmbCustomerType. Text "" Then 'now extract data.

Select Else MsgBox "I was not able to find any matching records. Text "" And cmbRegion. Text "" And cmbCustomerType. OpenDB rs. Close rs. Clear MsgBox "There was some issue getting the totals. OpenDB cmbRegion. EOF cmbRegion. OpenDB cmbCustomerType. EOF cmbCustomerType. I noticed another potential issue. The combo boxes are set as 0-fmStyleDropDownCombo.

Look at Properties, Style, in Design Mode This enables the user to add some item in the combo. Clear cmbProducts. ClearContents Me. Select ' no visible selection End Sub. Is there a way to solve the issue that prevents saving. I get a sharing violation if I try to save the file after making changes. Should I implement the database based on the comments from Garouda? Hi Colin, One possible reason is that the file is 'read only'.

What you have to do is to save it under another name. One little change in the code: to avoid any problem, it would be better to replace rs. Indeed, if you do not select anything and click on the command button Show Data, it'll generate an error. Basically the program should have some safety features to prevent this. I'll made some changes in order to take that into account Another remark, I never declare variables at module level if I can avoid it.

Declare them at procedure level each time you can. Net anymore. In this case, only ByRef is possible. ByRef tells the programme where to find the object in the computer memory I'm going to copy the whole modified code again in a next post.

Try to click on 'Show Data' in my previous code, without selecting anything, and try it with the new code. Connection 'note the change between brackets ByRef cnn As Select ' more professional: the active cell is hidden Connection 'note that we have to add cnn OpenDB cnn 'create the recordset rs.

Connection OpenDB cnn rs. Connection OpenDB cnn cmbProducts. Recordset rs. Connection OpenDB cnn cmbRegion. Funtionality with "bullet proof" code mod works great with updating multiple combo boxes with independent criteria.

Unfortunately, I'm having a bit of dificulty trying to use the base code to sequentially update the combo boxes using criteria from the previously updated box. Connection cnn. Connection OpenDB cnn Me. EOF Me. Plus it adds no value to excel filter. This may be used when OR,Join functionality is needed from database. This is a great article as always and I think it could really help with a regular report I need to setup in work.

Could you help by telling me how I could add a second table and link both using a unique identifier? EOF cmbConsignee. Fantastic tutorial Garouda Hanouman I also have the same error with your alternative code when populating data:. What I need to apply it to my spreadsheet is a way to not only select from the dynamic lists, [ Can somone explain this to me please?

I'm having some problems with the code, I think it's because i'm sitting on a Windows Server When i'm trying to update the Drop Down list i get this Error code Can't find project or library. When I open the document to play around, it says that there is an error and needs to be de-bugged. Anyone know why the link is not working or what could be done to fix it? Vijay, Just ran across your article and found it interesting. A few months back I had a situation that forced me to "learn by trying" the same basic technique.

I have data in spreadsheets very large - on the order of 90, rows. Needed to do some data conversions on some of the columns via a separate lookup spreadsheet e. Because the source data has so many rows, using an excel formula actually several as there were multiple lookup tables involved caused the spreadsheet recalc time to go through the roof. Yes, you can use SQL against an Excel workbook. In fact, you can do all kinds of good things via the ODBC driver - outer joins against multiple workbooks, using SQL's scalar functions, etc.

Thanks for posting this article. After reading this article, I successfully developed an excel based tool using ADO to analyse customer issues. I very much appreciate your time and efforts in writing the article and more importantly sharing the code in the Excel file. This site is great. Great work! After looking at this article I have pondered the idea of storing the data in Access as a table then using Excel to extract the data as selected instead of building queries and reports in Access.

I already have a macro that pulls data from Access and places it into Excel. All I would have to do is modify a little.

I am trying to develop a application using the sql query where I need to execute the update query, but I am unable to execute the query,.

I tried this and am getting a run time error the below error on line Range "dataSet". Select not sure what i am missing. I used your code, but modified the OpenDB function to read from a separate data file workbook. Code worked great BUT After the code runs, i close the connections by calling the cnn and rs Close functions and then set both variables to nothing. After that, if I go to the data file and try to open it, i get the 'File In Use' message and it says i can only open s Read Only.

It appears that Excel thinks the data file is still in use, even though I've closed the connections. We have created a new How-To page that explains in detail how to import data from Excel spreadsheets using the most robust technique in world! I have question here is with two columns one is Product and another is region and as far as data in both columns is concerned is basically Region and Product.

For e. What I want : In combo box I want to populate region names which is already done and works fine and in 2nd combo box I want to populate Product names on the basis of region selection. If I select region as East in my Combo box then my 2 combo box should get populated with only Product.

I encountered some errors. Expected 1" and highlighted rs. Please help me with this problem. Here is my code. EOF cboSearch. Connection With cn. Open End With End Sub.

Open End With. Hello, I am new in VB, I can understand your program perfectly. I could not understand this dataset, could you please explain it to me?

Range "dataSet". Select Thank you, Raymond. Ignore all the naysayers and unbelievers in the comments who say "Excel shalt […]. Hi all, Love the database. Was able to moody it to suit my needs, but the workbook bloated into 33MB file size and runs slow, any suggestions? Inserting new records, updating existing new records and data query as done from an application is very well possible in excel with vba and sql combined commands.

I am using SQL to query an Excel table to produce another table. Everything is fine, except there are two columns that have data, but will always be empty in the result set.

One of the columns is text, the other has a value from a Data Validation list. There are several other columns with these characteristics that are returned just fine in the record set. This is a perfect example. I will look at this sample. Thanks for a good work. This is what I have been looking for. I keep getting the error ODBC does not support the requested parametes error at the line excel rs. Text "" Then 'now extract data closeRS.

Fields 0. I Wonder if there is a posibility to make the comboboxes dependent of each other. If you choose from the combobox Products, only Regions related to Products would show up in the combobox Regions and so on? I think i'm wondering about the same thing as John. Is there a way of making the drop down boxes dependent of each other? For instance, when i choose a Region in the drop Down, only Products related to that region will show in the Products drop Down.

If anybody had any ideas on how to do this, please share. I have a column in excel with values as number as well as string. The SQL query is somehow not fetching all the distinct records.. Can you help? I also want to use Excel as a database for users who do not have a separate database program available to them.

Can you please read the following scenario and give me your thoughts? I want to write a COM Add-In which will be installed on each user's machine and is used to read from and write to the single database workbook which resides on the server. The add-in will contain a user form. When the user form is filled out, I click the "Add" button which invokes the code to copy the user form data, activate the database, add the record to the database, update my workbook from the database adding my new record and all other changes since I last updated my workbook , and close the database.

It should only take a few seconds, but what happens if two or more users try to add a record at the same time? Sharing is not an option. Can my add-in contain a contingency that tells it "if the database workbook is being accessed by another user, stop the process but keep trying to access it until it becomes available, then open it and continue the process"? In my scenario, the database workbook is the only element on the server. It will only be used for data storage and retrieval, with the results being displayed and manipulated in each user's personal version of the workbook residing on their own machine.

Is this doable? I guess I'm the only one. I found it very helpful. If rs. I am copying rows with 8 columns using copyfromrecordset option.

But it is taking lot of time to copy the data into excel more than 1 hour. I am not sure why this is running for this much time. Any one have any idea. I am using Excel as a database as you excellently show, but I am also trying to use temporary tables within the SQL code. I get an error. A simple way is to use the powerful inherent feature of Excel - Advanced Filter. You have to set up a criteria range on your spreadsheet and define YourRange excel database and YourCriteria query criteria.

Few years ago I had to create a portfolio selection interface, emulating Excel auto-filter. It would be nice to have "communicating" dropdowns plus the Select all possibility as in AutoFilter.

Hi,I have one doubt in above example. If the records in which the sql query is fetching is having special characters,then what would be the output. So,My question is how to fetch these records if i give same value for ex:abd's in dropdown control. Try this and help me out guys Thanks in Advance.

I had the same problem. Where I work the government will not allow us to use MS Access due to some security reasons. We have had our only other database software available for us to use without paying a developer removed I won't go into the reason as it upsets me. Anyway, we have operator logs that are now filled out on a Word document, and then they save each individual document.

Then the data is in a spreadsheet for us to query and trend to our hearts delight. If i want to go back to see a particular log I can then retrieve the desired data and populate the Word document. No this is not ideal, but is a work around as it takes this place years to get around to giving us new software, or we have to pay a third party developer a load of money.

The only issue I have is in the comment fields. The recordset fields won't allow for more than characters. Anyway, I am for the most part successfully using Excel as a database, and once I sort out how to deal with the richtext type fields with more than characters it will be good enough. Thanks for your excellent post. Just a question: I am working on exactly same thing with the exception of using text box instead of drop down boxes.

Additionally I would like to have separate worksheet for adding data into the db. In total it would have three worksheet as data, add, view. I'm using Excel as a database and populate the records in a multi colomn listbox in a userform in Word vba. I managed to do this. I can even sort the different columns in the listbox. But now I want to fill the textboxes in the userform with the values of the selected listbox item. The first column has an ID-no.

Can anyone tell me how to do that or is this a typical Word question? Then I'm sorry I've put the question here. I'm looking for VBA code for data import from website to excel!! Requirement:- i have company website which we need to download data every time, need code for log-in website by credentials and download a data automatically by using VBA code. Hi, Madhu, I would suggest you to search the web. There are many websites about that.

VBA beginner here - How were the drop-down lists and buttons created in this database template? I'm having trouble figuring them out as there are no userforms shown in the VBA editor? Any help would be appreicated. Sadly, this no longer works on Office Home and Student. I ran your example file without changing anything, and keep getting "microsoft excel is waiting for another application to complete an ole action".

Do you have a solution to this? Would really appreciate if you could help. Did you save the file to a local drive? Did you click on Update Drop Downs? This is important. It doesn't for me. Dear both thanks a lot to produced this artical but i have one problem i need only specific range from "data" to show in view tab i dont want to show all. Select this line Range Selection, Selection. I'd recommend asking this in the Chandoo.

I need to update excel data using a Form not directly into sheet. Would appreciate if you can help, Since its a big excel designing a userform would be critical. I am using excel as database and unabl to use Insert Into query to updete records excel database for date and floating point columns. I have tried all the options list useing before and after, Using Clang funciton. Nothing works. Am I missing anything. Hide End Sub. Noticed though that it downlaods as '. Changed the extension to '.

Help me please!!! I've downloaded the example template. I am able to pull all my data and the buttons all work; however, the last three columns of data are pulled in formatted as text. It is not formatted this way in the data tab so I am unsure why this continues to happen. I'm not sure if that is the cause of the issue or how to go about resolving it. Any help would be appreciated! It includes animated GIFs to complement the text. This speeds up the process of learning, since the images are zoomed in, yet still moving, for a more engaging guide.

It explains the code module too, which is an interesting take on the entire databasing process. Be warned that some of the images are from older Excel versions. So […]. Inspiring me for explore more, please can give me an example another demo for excel database but with to another workbook. Can anyone send me a simple database for me to use it in my service department in monitoring our medical equipments which we delivered and those units that are still in the warehouse.

Including when it was installed and I need to have a preventive maintenance monitoring plus spare parts monitoring. Would somebody help me please. Hi, I am trying to learn to use excel as database on my own. I have gone through your program, but unable understand how "cmbProducts" is coming from.

Can you please elaborate? I wonder how the Excel sample file you provided executing SQL like charm, quite soo fast in retreiving records. I tried implementing that in my application and found running sooo stubbornly slow, like 30 seconds just to retreive a record of 40 lines while yours has 14, records.

I want to change the Product, Region, CustomerType to other name to fit with my purpose but when i change it on vba code, it always show error Object required.

Can someone help me? Hi guys, Recently i found Chandoo with so many good things can use for my daily works. Thank you so much for your goodness when sharing file for us. I am a newbie on Excel and VBA, i saw your demo file to use excel as database is very good with my work.

I tried to change it to fit with mine but there are something cannot work: Now i got issue when i insert my data to this file. It does not accept the data in merge format in Product, Region, Quotation columns and show error "Type mismatch", could you give me help?

Thanks for sharing the feature. Have successfully modified the code and used it in many excel files at work. Thank you for your advises, I downloaded the demo, was working fine. Great and simple solution. Thanks for sharing it. There is a simple tool that I have created for myself and now made it available to others. I guess it all boils down to individual levels of understanding Excel but most importantly, how much Logical the individual can get. I've always told people, that your level of utilisation of Excel is largely dependent on much logic you can bring into your Excel problem solving solutions.

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Using Excel As Your Database. Last updated on March 18, Vijay Sharma. Share on facebook Facebook. Share on twitter Twitter. Share on linkedin LinkedIn. Excel as a Database — Demo We will learn how to build this: Before we begin: The entire sheet where the raw data has been stored will be referred as one single database table by Excel. This is very important to understand.

Setting up Excel as Database We need some raw data and we will utilize Customer Service Dashboard sample database here. Fill dt ; con. Create the Excel worksheet from the data set ExcelLibrary. CreateWorkbook "MyExcelFile. Improve this answer. ExcelLibrary has been superseded by the exceptional EPPlus - epplus. Jan updates it regularly. Have been using it and it is one of the finest open source projects we've worked with.

It should be noted that ExcelLibrary has a lot of performance issues when dealing with large datasets larger than rows with lots of columns. Currently doing a heavy modification of the code base at work so we can use it in a project. Use the Dispose method of this interface to explicitly release unmanaged resources in conjunction with the garbage collector. The consumer of an object can call this method when the object is no longer needed.

What about ClosedXML? I may prove to be useful in your projects. I tried ExcelLibrary, all it could do was produce a 'corrupted file', nothing fancy just 3 columns, small file. Excel wouldn't open.

Tried the automatic file generation rom DataTable. Show 5 more comments. From the EPPlus 5 readme. The examples were helpful.

I was able to change my code from using Microsoft interop library horribly slow to this library version 4. My benchmark writes a file with two tabs and about , cells. Using MS interop it took 13 minutes. Using EPPlus it took 10 seconds, a roughly 80x speedup.

Very happy! You only need to open source changes you make to ClosedXml or if you directly put the source code as opposed to referencing the ClosedXml assemblies inside of your application then you need to open source your application. Paul Chernoch: We populate large Excel sheets with interop very quickly. The secret is to do a bulk update. Create a object [,] block, populate that, then write that matrix to Excel at one time: excelWorksheet.

But certainly the easiest and fastest solution which works for me. Just a heads up that v2. This means you have to know the XML structure of an Excel file, which is very complicated. It's much easier to use a wrapper such as EPPlus, mentioned above, which simplifies things.

Using the solutions above, Especially Vincent Tom's sample Poly Math , it's easy to build a writer that streams through big sets of data, and writes records in a manner similiar and not too much more complex to what you'd do for CSV; but that you're instead writing xml. And you can always rename them from.

Show 3 more comments. Take a look at my blog posts: Creating Excel spreadsheets. Does work well for populating an existing template. Can someone confirm if this works when running in x64? I am pretty sure Jet only works if your app is compiled or running in bit mode. Be very careful with this -- it's a big ugly cludge for example, sometimes it guesses a column type and discards all the data that does not fit. One should be very careful if using this method.

I've found it very flaky for data that isn't in a perfect format. It sometimes is not able to retrieve a cell value just because it couldn't understand the format. It doesn't have a delete operation. It works totally different and unpredictable even with a slightest provider change.

I'd say go for a proven commercial solution. You have a great product but I think a lot of people here are expecting free solutions.

That might explain the down votes. It's so ad hoc but it works not to mention excel issuing a warning on opening and is so simple, it deserves to have a place as a solution. Though only for showing that you can export an excel file : — Luka Ramishvili.

This solution worked fine for me, just note you cannot use. Some people at my organization can't open excel files made this way in Office and above. An even more lightweight version is to just create a csv file, which Windows associates with Excel.

Watch out for security warnings appearing to your user if you do this: "Warning, the content of the file doesn't match the extension". Particularly alarming when you're doing a download from your bank.

I wouldn't rcommend pursuing the approach mentioned in this answer — Caius Jard. I had a hard time with it and eventually switched to ExcelLibrary. Definitely true. My only concern, compared to NPOI for example, is performance, e. Add "Sample Sheet" ; worksheet. Cell "A1". SaveAs "HelloWorld. I tried using this in a project that builds pretty large Excel sheets.

Excellent library, but extremely poor in performance. You might be impressed if you haven't tried them. Please be warned of Microsoft's stance on this: Microsoft does not currently recommend, and does not support, Automation of Microsoft Office applications from any unattended, non-interactive client application or component including ASP, ASP.

But you have to make sure that you dispose of everything manually, otherwise you will leak memory — MagicKat. Ricky B: Also, in my experience with the interop is that it does use excel. Every time we used it, if Excel wasn't installed on the machine, we would get COM exceptions.

With the OLE, even with very careful disposals, it eventually leaks memory or crashes. For our server, we just reboot it nightly. Again, that works OK. I'm coming to this discussion after struggling more than a week on interop, and unless your needs are very simple, this is not gonna work. The support for formatting your spreadsheet is abysmal, which is arguably the reason for generating an.

For example, have you tried outputting more than characters in a cell, or have you tried setting the width of merged cells in a consistent manner? I have, and I can't tell you how much I hate this crap now Do yourself a favor and go with one of the free libraries mentioned on this discussion.

It works fine. After adding this class to your application, you can export your DataSet to Excel in just one line of code: CreateExcelFile. And it doesn't even require Excel to be present on your server.

This seems a bit misleading, as you are asking for a donation to get all of the features. That's partly true: The completely free version will generate a perfect. I haven't had need to use it myself yet, but does look interesting.

SaveAs outputFileName ; The whole suite of controls is available for free through the community license program if you qualify less than 1 million USD in revenue.

Syncfusion Not free — Kiquenet. Well, you can also use a third party library like Aspose. To be more precise, you can use Aspose. Cells for. NET application. Try the MikesKnowledgeBase library This one works on both. SmartXLS smartxls. Write table. ColumnName ; excelDoc. GetType ; switch rowType. Write XMLstring ; excelDoc. Boolean": excelDoc. Write x[y]. ToString ; excelDoc. Int16": case "System. Int32": case "System. Int64": case "System. Byte": excelDoc.

Decimal": case "System. Double": excelDoc. DBNull": excelDoc. Write "" ; excelDoc. Like the article says though, that's XML that Excel will read rather than actually being an XLS file, which means that it might only work in Excel and not other programs that read spreadsheets.

But it's probably better than the equivalent HTML table answers here! Supports xlsx? The type it's Open XML but you can only write a. Take care with the blank spaces in the tags. Use my code refactored below.

Sachin Dhir. Clear ; HttpContext. AddHeader "content-disposition", string. PrepareControlForExport gv. HeaderRow ; table. Add gv. PrepareControlForExport row ; table. FooterRow ; table.

Write sw. ToString ; HttpContext. Remove current ; control. Yes, Excel itself will open that OK but other programs that consume spreadsheets - including Microsoft's free Excel viewer, for example - won't accept it.

You'd do better to create a real Excel file using one of the libraries here. You should also use System. ContentDisposition to generate the content-disposition header text rather than a string append - that'll cope with filenames that contains spaces etc.