[Solved] Bullet List converted while exporting ASP.Net GridView to Excel using C#

• this was the original bullet but after export to excel it is converting to â€¢

protected void btnExportToExcel_Click(object sender, EventArgs e)
{
    gvClient.Visible = true;
    Response.Clear();
    Response.Buffer = true;
    Response.AddHeader("content-disposition", "attachment;filename=MIS.xls");//GridViewExport
    Response.Charset = "UTF-8";
    Response.ContentType = "application/vnd.ms-excel";
    using (StringWriter sw = new StringWriter())
    {
        HtmlTextWriter hw = new HtmlTextWriter(sw);

        //To Export all pages
        gvClient.AllowPaging = false;
        this.BindGrid();

        gvClient.HeaderRow.BackColor = Color.White;
        foreach (TableCell cell in gvClient.HeaderRow.Cells)
        {
            cell.BackColor = gvClient.HeaderStyle.BackColor;
        }
        foreach (GridViewRow row in gvClient.Rows)
        {
            row.BackColor = Color.White;
            foreach (TableCell cell in row.Cells)
            {
                if (row.RowIndex % 2 == 0)
                {
                    cell.BackColor = gvClient.AlternatingRowStyle.BackColor;
                }
                else
                {
                    cell.BackColor = gvClient.RowStyle.BackColor;
                }
                cell.CssClass = "textmode";
            }
        }

        gvClient.RenderControl(hw);

        //style to format numbers to string
        string style = @"<style> .textmode { } </style>";
        Response.Write(style);
        Response.Output.Write(sw.ToString());
        Response.Flush();
        try
        {
            Response.End();
        }
        catch (Exception ex)
        {
            string klj = ex.Message;
        }
        gvClient.Visible = false;
    }

}