How to give header name in excel using ASP.NET C#

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C#

DataTable dt = new DataTable();
                dt = _dataSet.Tables[0];
                //Create a dummy GridView

                GridView GridView1 = new GridView();
                GridView1.AllowPaging = false;
                GridView1.DataSource = dt;
                GridView1.DataBind();

                Response.Clear();
                Response.Buffer = true;
                Response.AddHeader("content-disposition",
                 "attachment;filename=SummaryCollection.xls");

                Response.Charset = "";
                Response.ContentType = "application/vnd.ms-excel";
                StringWriter sw = new StringWriter();

                HtmlTextWriter hw = new HtmlTextWriter(sw);
                for (int i = 0; i < GridView1.Rows.Count; i++)
                {
                    GridView1.Rows[i].Attributes.Add("class", "textmode");
                }
                GridView1.RenderControl(hw);

                //style to format numbers to string
                string style = @" .textmode { mso-number-format:\@; } ";
                Response.Write(style);
                Response.Output.Write(sw.ToString());
                Response.Flush();
                Response.End();

What I have tried:

above i write the code which export Data from dataset in excel i want to know

how i give header name and bind shcool name in Header and Also One Column put it on Top of the sheet after School Name

Please give me Code

Posted 28-Nov-19 20:24pm

Member 12183079

Updated 29-Nov-19 1:45am

Maciej Los

v2

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Comments

F-ES Sitecore 29-Nov-19 5:26am

You're not exporting anything to excel, you are sending an html table to the browser and asking the browser to use Excel to interpret that table, so what you can do is fairly limited to how excel interprets html tables. If you want more control over how the excel file is formatted you'll probably need to create an actual excel file using something like the Open XML SDK, or there are products like EPPlus etc.

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Richard Deeming · Answer 1 · 2019-11-29T01:46:00

As F-ES Sitecore said, use a tool like EPPlus[^] to generate a proper Excel file:

C#

DataTable dt = _dataSet.Tables[0];

using (ExcelPackage package = new ExcelPackage())
{
    var sheet = package.Workbook.Worksheets.Add("Your Sheet Name");
    sheet.Cells["A1"].LoadFromDataTable(dt, PrintHeaders: true, TableStyle: TableStyles.Medium9);
    
    Response.Clear();
    Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
    Response.AddHeader("content-disposition", "attachment;filename=SummaryCollection.xlsx");
    package.SaveAs(Response.OutputStream);
    
    Response.Flush();
    Response.End();
}