如何在网格中删除图像，同时导出到excel

我有一个带有一些数据的网格，其中一列我添加了图像以更好地显示给用户。现在我有一个导出选项导出网格到excel表格。在excel中，我得到的图像没有找到图标。我不想在excel表中向用户显示图像。任何帮助

Response.ClearContent();
Response.Buffer = true;
Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", "123.xls"));
Response.ContentType = "application/ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
// gdAclog.AllowPaging = false;
// gdAclog.DataBind();
//Change the Header Row back to white color
gdAclog.HeaderRow.Style.Add("background-color", "#FFFFFF");
//Applying stlye to gridview header cells
for (int i = 0; i < gdAclog.HeaderRow.Cells.Count; i++)
{
    gdAclog.HeaderRow.Cells[i].Style.Add("background-color", "#507CD1");
}
int j = 1;
//This loop is used to apply stlye to cells based on particular row
foreach (GridViewRow gvrow in gdAclog.Rows)
{
    gvrow.BackColor = Color.White;
    if (j <= gdAclog.Rows.Count)
    {
        if (j % 2 != 0)
        {
            for (int k = 0; k < gvrow.Cells.Count; k++)
            {
                gvrow.Cells[k].Style.Add("background-color", "#EFF3FB");
            }
        }
    }
    j++;
}
gdAclog.RenderControl(htw);
Response.Write(sw.ToString());
Response.End();