how to set image in header in MS WORD when export data?

Question

how to set image in header in MS WORD when export data from gridview in asp.net?

 

i am using below code but i want to set image in header in MS WORD.

 

Response.Clear();

Response.Buffer = true;

Response.AddHeader("content-disposition",

"attachment;filename=" + gdvReport.Caption + ".doc");

Response.Charset = "";

Response.ContentType = "application/vnd.ms-word ";

StringWriter sw = new StringWriter();

HtmlTextWriter hw = new HtmlTextWriter(sw);

GridView1.AllowPaging = false;

GridView1.HeaderRow.BackColor = System.Drawing.Color.White;

gdvReport.HeaderRow.BackColor = System.Drawing.Color.White;

GridView1.HeaderStyle.ForeColor = System.Drawing.Color.Black;

gdvReport.HeaderStyle.ForeColor = System.Drawing.Color.Black;

//GridView1.DataBind();

gdvReport.AllowPaging = false;

// gdvReport.DataBind();

gdvReport.RenderControl(hw);

GridView1.RenderControl(hw);

Response.Output.Write(sw.ToString());

Response.Flush();

Response.End();