Problem when openning excel document. Two popups come up.

The following code I have too explorers popup for saving excel files.

What am I missing.

protected void Page_Load(object sender, EventArgs e)
    {
        DataTable dt = (DataTable)Session["EXPORT_RESULT"];
        string filename = "export.csv";
        filename = string.Format("filename={0}", filename);
        Response.AppendHeader("content-disposition", filename);
        Response.ContentType = "application/vnd.ms-excel";
        Response.ContentEncoding = System.Text.Encoding.Default;

        // Envoyer les données (fichier CSV) au Browser
        Response.Write(GetCSVString(dt, false));
    }
mathieu_cuprykAsked:
Who is Participating?
 
Daniel ReynoldsConnect With a Mentor Software Applications Developer / IntegratorCommented:
Can you write anything to an excel file? Try the following to just get a sample going and see if it will create the file for you. Once you know you are writing or saving the file, you can keep progressing on.
 
           Response.ContentType = "application/vnd.ms-excel";
            Response.AddHeader("Content-Disposition", "attachment; filename=c:\\myfile.xls");
            Response.Write("<HTML>\n");
            Response.Write("      <head runat='server'>\n");
            Response.Write("            <title>Excell_Output</title>\n");
            Response.Write("      </head>\n");
            Response.Write("      <body>\n");
            Response.Write("<table><tr><td>Howdy</td></tr></table");
            Response.Write("      </body>");
            Response.Write("</HTML>");
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mathieu_cuprykAuthor Commented:
I am not sure what this will help me with. What do you mean? Once you know you are writing or saving the file, you can keep progressing on.

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digitalZoCommented:
Perhaps it's because it's getting called twice. Does the Excel grid on a new form? If so, what is the excel button click code? Can you post it?
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digitalZoCommented:
A typo:

Is* the Excel grid on a new form?
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Daniel ReynoldsSoftware Applications Developer / IntegratorCommented:
You said you were having a problem saving the excel file.
The code I displayed for you works to bring up the save/open dialog for an xls file.
In the process of debugging, I am just trying to make sure you eliminate each point of possible failure to eventually get the end results.
The first point of failure to eliminate is to get your syntax right with saving/writing a file to the response stream in the excel format.

So, if you do can do that, then you would next go to your routine where you read the data to save to your csv file and work thru that making sure there are no errors in it.
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mathieu_cuprykAuthor Commented:
This is a good solution and help me out. I used a button instead of a link.
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