unable to export to excel

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I am using following code for export to excel from a data from a Gridview control.

VB

lblError.Visible = false;
Response.Clear();
Response.AddHeader("content-disposition", "attachment;filename=BorrowerReport.xls");
Response.Charset = "";
// If you want the option to open the Excel file without saving than
// comment out the line below
// Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.ContentType = "application/vnd.xls";
StringWriter stringWrite = new System.IO.StringWriter();
HtmlTextWriter htmlWrite = new HtmlTextWriter(stringWrite);
datagrid.RenderControl(htmlWrite);
            
Response.Write(stringWrite.ToString());
Response.End();

But now add a linkbutton as item template of this control .Then show a error as

Control 'ctl00_Contentplaceholder2_grdBorrowerMaster_ctl02_LinkButton1' of type 'LinkButton' must be placed inside a form tag with runat=server.

So How can I export?

Posted 26-Jan-11 19:33pm

vipinsethumadhavan

Updated 26-Jan-11 22:37pm

v3

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JF2015 27-Jan-11 1:34am

Added code formatting.

Sandeep Mewara 27-Jan-11 1:56am

Looks like you have shared a server side code and the error lies on client side.
can you clarify where exactly is your link button and the HTML tag you used?

4 solutions

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Sushma_Patel · Answer 1 · 2011-01-26T19:48:00

Solution 1

Try adding below code in your code behind :

C#

public override void VerifyRenderingInServerForm(System.Web.UI.Control control)
{
}

Posted 26-Jan-11 19:48pm

Sushma_Patel

Comments

vipinsethumadhavan 27-Jan-11 1:56am

I am also used this.

Anupama Roy · Answer 2 · 2011-01-26T20:22:00

Looks like the issue is with rendering.This below article discuss on similar issue.Have a look at this on rendering the html part,you may get some idea.

http://dotnetforyou.wordpress.com/2011/01/23/dynamically-loading-usercontrol-in-asp-net-page-resulting-exception-control-button1-of-type-button-must-be-placed-inside-a-form-tag-with-runatserver/[^]

This discuss on loading UserControl,replace that with DataGrid & try.

Toniyo Jackson · Answer 3 · 2011-01-26T20:33:00

Solution 3

Try this,
http://toniyojackson.blogspot.com/2010/10/gridview-export-to-excel.html[^]

Posted 26-Jan-11 20:33pm

Toniyo Jackson

Comments

vipinsethumadhavan 27-Jan-11 3:05am

Then now shown error as
RegisterForEventValidation can only be called during Render();

RaviRanjanKr · Answer 4 · 2011-01-26T20:51:00

Solution 4

I am not sure about problem which you getting so you may navigate the given links to get simple way to export data from datagridview to excel
Link1[^]
Link2[^]

Posted 26-Jan-11 20:51pm

RaviRanjanKr

unable to export to excel

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