stop gridview export to excel exporting style

Hi,

I have the following method which works fine in terms of exporting my gridview to excel

Protected Sub ExportToExcel2(ByVal objDT As DataTable, ByVal authAbbreviation As String)
        Response.Clear()
        Response.Buffer = True
        Response.ContentType = "application/vnd.ms-excel"
        Response.AddHeader("content-disposition", "attachment;filename=MyFiles.xls")
        Response.Charset = ""
        EnableViewState = False

        Dim sw = New System.IO.StringWriter()
        Dim htw = New System.Web.UI.HtmlTextWriter(sw)

        gvResults.DataSource = objDT
        gvResults.DataBind()

        gvResults.RenderControl(htw)

        Response.Write(sw.ToString())
        Response.End()
    End Sub

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The only problem is in the folder where the file is saved also gets created a directory that holds html and css for the file.

How can I avoid this so all the user gets is an excel file?
scm0smlAsked:
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AndyAinscowFreelance programmer / ConsultantCommented:
Does this work?
Protected Sub ExportToExcel2(ByVal objDT As DataTable, ByVal authAbbreviation As String)
        Response.Clear()
        Response.Buffer = True
        Response.ContentType = "application/vnd.ms-excel"
        Response.AddHeader("content-disposition", "attachment;filename=MyFiles.xls")
        Response.Charset = ""
        EnableViewState = False

        Dim sw = New System.IO.StringWriter()
rem        Dim htw = New System.Web.UI.HtmlTextWriter(sw)

        gvResults.DataSource = objDT
        gvResults.DataBind()

rem        gvResults.RenderControl(htw)

        Response.Write(sw.ToString())
        Response.End()
    End Sub

Open in new window

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scm0smlAuthor Commented:
does rem mean remove?

If I do sw never gets set to anything?

SOrry if I am asking something stupid!
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AndyAinscowFreelance programmer / ConsultantCommented:
That looked like VB code - in VB a rem is a 'remark'.  It means that line of code is ignored by the compiler.
In other words just delete those two lines.



You want to not have the html and css output.
The line of code:
System.Web.UI.HtmlTextWriter
is telling the program to create html and css output - hence my suggestion to remove that line (and the other which depends on it) and see if it cures your problem.
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scm0smlAuthor Commented:
ok but if i do that at no point am i exporting the data in the data table...

what should go in its place?
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AndyAinscowFreelance programmer / ConsultantCommented:
I assumed lines 12 & 13 did that:
        gvResults.DataSource = objDT
        gvResults.DataBind()

Just what is gvResults ?  and what is Response ?
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scm0smlAuthor Commented:
gvResults is a gridview.

Basically I was setting the datasource of the gridview and then epxorting that...
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AndyAinscowFreelance programmer / ConsultantCommented:
Hmmm.
I am convinced your problem is with this HtmlTextWriter - that doesn't just dump the data but everything about the control (gridview) and so you are getting the folder with the html and css info.

I just don't see an easy way around this.
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scm0smlAuthor Commented:
An export of the datatable direct?
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AndyAinscowFreelance programmer / ConsultantCommented:
There is a WriteXML member of a DataTable - I don't know if you could use that to export to an excel file directly.
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