页面（图表+table+GridView）导出为excel

图表+table

protected void Button3_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
// 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。

System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);

string imagePath = Server.MapPath(this.DaxonTechChartWeb1.ImagePath) + "//" + this.DaxonTechChartWeb1.ID + "." + this.DaxonTechChartWeb1.ImageType.ToString();
oHtmlTextWriter.AddAttribute(HtmlTextWriterAttribute.Src, imagePath);

tableExcel.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());

Response.Flush();
Response.End();

}

gridview：

protected void Button_toExcel_Click(object sender, EventArgs e)
{
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312";
Response.AppendHeader("Content-Disposition", "attachment;filename=FileName.xls");
// 如果设置为 GetEncoding("GB2312");导出的文件将会出现乱码！！！
Response.ContentEncoding = System.Text.Encoding.UTF7;
Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
// turn off paging

GridView1.AllowPaging = false;
GridView1.Columns[0].Visible = false;
GridView1.DataBind();
GridView1.RenderControl(oHtmlTextWriter);
Response.Output.Write(oStringWriter.ToString());
Response.Flush();
Response.End();
// turn the paging on again
GridView1.AllowPaging = true;
GridView1.DataBind();

}