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One click ASP.NET export button control for Excel/CSV file

, 8 Dec 2004
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An extended ASP.NET button control for exporting/downloading Excel or CSV file.

Sample image


Microsoft has done a wonderful job of creating an extensible framework, especially for ASP.NET, by creating various server controls. This article is about extending ASP.NET Button control and adding your own functionality for ONE CLICK exporting from ASP.NET page.


There are various ways one can export data using ASP.NET. Usually, it is done by coding a separate page and adding various HTTP headers and responses. (Refer: Microsoft).

Like me, most of us believe in reuse. The export functionality can be achieved by reusing the same page for various projects either by passing DataSet from the parent page, or reconnecting to the data source on the landing page and manipulating Response object.

One Click Export

You may wonder why I call it ONE CLICK EXPORT, 'because this control doesn't require intermediate page for exporting data'. Just drag the ExportButton control on an ASPX page or a user control, and set its properties at design time or runtime to hook DataView. Yup, that’s it, no more hassles of dealing to investigate HTTP headers, MIME types or encodings.

'ASPX page [Design time]
<pnwc:ExportButton id="btnExcel" runat="server" 
  Separator="TAB" Text="Export to Excel" 
  FileNameToExport="Books.xls" BackColor="#E0E0E0"></pnwc:ExportButton>

'Code Behind [Run time]
    Private Sub Page_Load(ByVal sender As System.Object,_
             ByVal e As System.EventArgs) Handles MyBase.Load
        Dim ds as dataset=filldataset()
        dgBooks.DataSource = ds.Tables("Books")
        'Set Export button properties 
        btnExcel.Dataview = ds.Tables("Books").DefaultView
        btnExcel.FileNameToExport = "Books.xls"
        btnExcel.ExportType = _
        btnExcel.Separator = _

    End Sub

[Note: The ExportButton properties can either be set at design time and/or run time].

Properties Explained

  • ExportType [CSV or EXCEL]
  • Separator [Comma or TAB]
  • Delimiter [Any character]

ExportType property is used to either select CSV or EXCEL format, btnExcel.ExportType = PNayak.Web.UI.WebControls.ExportButton.ExportTypeEnum.Excel. Separator property can be used to either select TAB or Comma separator, btnExcel.Separator = PNayak.Web.UI.WebControls.ExportButton.SeparatorTypeEnum.TAB. Delimiter property is used to specify any delimiter like single quote, double quote, pipe character etc. Default is Nothing (empty string).

Demo code

The source code is provided with the sample project to test out the solution.

  1. Install is straightforward. Extract demo code zip files to a designated directory.
  2. Two directories will be created. (namely, \\PNWebControls and \\TestMyControls). Make sure they both fall under same parent directory.
  3. Create a virtual directory by either right clicking on the directory \\TestMyControls and opening properties for web share, or use IIS MMC. (Note: This is a demo project.)
  4. Open up a demo solution (TestPNControls.sln) in Visual Studio 2003. (This control also works well with VS 2002. You know the drill, just change the version numbers inside the project/solution file and open it in Visual Studio 2002).

How to use the Control in your project

You may either include the PNWebControls project and reference it in your project, or reference the assembly (PNayak.Web.UI.WebControls.ExportButton.dll). You can also add this control in Visual Studio Toolbox for design time.

[Note: This assembly also contains ExportLinkButton as some may prefer link button over regular button.]

Check out my .NET spot for more to discover.


  • 8 July 2004 - updated downloads.
  • 9 Dec 2004 - updated downloads and article.


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Prashant Nayak (.Net Lover)
Web Developer
United States United States
Cranking code more than 12 years. Technical/Project lead/MCSD. Offered services to various industuries like S/W, Telecom, Publishing, Insurance etc.

When not on computer, I play/swim/read with my kids and help my better half (of course my lovely wife) to clean house. Solving challenging S/W problems is my passion. Hate non-productive meetings. Do lots of GOOGLE and Eat/Drink/Sleep around MSDN.

Comments and Discussions

GeneralMy vote of 5 Pinmemberm3jim11-Jan-13 2:48 
Answerunicode problem Pinmemberkamran_kamaei29-Nov-11 15:53 
Questionwhen I click on export button broser shows me msg "Internet Explorer cannot display the webpage " ..plz help urgent ! Pinmemberanjaliaroraverma26-Sep-11 19:41 
AnswerRe: when I click on export button broser shows me msg "Internet Explorer cannot display the webpage " ..plz help urgent ! Pinmemberanjaliaroraverma26-Sep-11 20:00 
I found the reason of above problem, but do not know the solution.

Actually my dataset is big (more than 6,000 rows). When I tired to pull one row it worked. Please suggest what can I do to make it work for large dataset ... thankyou.
GeneralRe: when I click on export button broser shows me msg "Internet Explorer cannot display the webpage " ..plz help urgent ! PinmemberMember 97423229-Jan-13 3:48 
GeneralRe: when I click on export button broser shows me msg "Internet Explorer cannot display the webpage " ..plz help urgent ! Pinmemberthedarkone210-May-13 1:26 
GeneralRe: when I click on export button broser shows me msg "Internet Explorer cannot display the webpage " ..plz help urgent ! PinmemberPraveen Kandari12-Mar-15 23:52 
GeneralHow to use the code in c# Pinmembersridharan282-Jun-11 20:29 
GeneralMy vote of 1 PinmemberEng Basel27-Apr-11 3:32 
GeneralMy vote of 1 Pinmembergandhiabc4u14-Apr-11 0:54 
GeneralNo data found when using export button Pinmembercfchapman4-Aug-10 8:56 
GeneralRe: No data found when using export button PinmemberPraveen Kandari12-Mar-15 23:59 
GeneralError Display unicode letter In Excel PinmemberDongMT3-Aug-10 0:44 
QuestionFormatting a Integer column to String PinmemberSibiSurya10-May-10 4:29 
QuestionTotal Noob begging for someones help PinmemberPhil Lavender12-Dec-09 2:37 
Questionresponese.end error message PinmemberMember 404560329-Aug-09 3:42 
AnswerRe: responese.end error message PinmemberLoki7021-Oct-09 6:12 
AnswerRe: responese.end error message PinmemberV.Manjunath11-Jan-11 9:57 
GeneralExport to excel not CSV Pinmembertorchwood90915-Jun-09 7:00 
GeneralRe: Export to excel not CSV Pinmembergg423721-Aug-09 6:30 
GeneralRe: Export to excel not CSV PinmemberCikaPero15-Sep-10 23:18 
GeneralExport to Excel using this library IN A USER CONTROL Pinmembertorchwood90915-Jun-09 6:54 
Generalfilldataset Pinmembertorchwood90911-Jun-09 10:51 
AnswerRe: filldataset Pinmembermusacj11-Jun-09 23:35 
GeneralRe: filldataset Pinmembertorchwood90915-Jun-09 5:36 
AnswerRe: filldataset Pinmembermusacj15-Jun-09 6:00 
GeneralRe: filldataset Pinmembertorchwood90916-Jun-09 8:03 
AnswerRe: filldataset Pinmembermusacj17-Jun-09 1:23 
QuestionCan someone help me to do this from a user control from a datasource? Pinmembertorchwood90911-Jun-09 10:42 
AnswerRe: Can someone help me to do this from a user control from a datasource? Pinmemberpsit5716-Jul-09 9:47 
Generalfile transfer to mobile phone Pinmembersakshi singla15-Mar-09 3:48 
GeneralDataview Export to excel - Messed up excel sheet Pinmembererkrsr30-Nov-08 19:35 
QuestionRe: Dataview Export to excel - Messed up excel sheet Pinmembertorchwood90911-Jun-09 10:40 
GeneralRe: Dataview Export to excel - Messed up excel sheet Pinmembergg42375-Nov-09 1:41 
GeneralUsing with SSL PinmemberAndrew Woomer13-Nov-08 10:56 
GeneralIf using this with Ajax update panel - you better do this... Pinmemberilovthecov27-Oct-08 14:22 
GeneralRe: If using this with Ajax update panel - you better do this... PinmemberMember 398938613-Mar-09 1:06 
QuestionHow do you format the Excel output? Pinmember5150.Net14-Oct-08 8:31 
QuestionCan I use this control in Datagrid ? Pinmemberthakar10-Sep-08 1:45 
GeneralFormat PinmemberMember 172018313-Mar-08 8:49 
GeneralRe: Format PinmemberAlex Tang21-Apr-08 20:18 
GeneralRe: Format PinmemberSandeep.Ban27-May-08 22:45 
GeneralRe: Format Pinmember5150.Net14-Oct-08 8:19 
GeneralRe: Format Pinmemberjesiahwedgewood27-Apr-09 13:56 
GeneralRe: Format Pinmembergtxboyracer8-Feb-10 11:34 
GeneralProblem PinmemberMember 172018312-Mar-08 10:52 
GeneralRe: Problem [modified] Pinmemberpsit5715-Jul-09 11:14 
Generalexcel report in Pinmembersehgalama30-Jan-08 20:40 
GeneralRe: excel report in Pinmembermauxanhlam12-Jun-08 22:51 
NewsAlternative Solution [modified] Pinmemberkelvin199718-Nov-07 19:30 

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