此外做了个导出Excel的功能,主要代码如下:
1 private void DumpExcel(GridView gv, string FileName)
2 {//带格式导出
3 string style = @"<style> .text { mso-number-format:\@; } </script>";
4 Response.ClearContent();
5 Response.Charset = "GB2312";
6 Response.ContentEncoding = System.Text.Encoding.UTF8;
7 Response.AddHeader("content-disposition", "attachment; filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
8 Response.ContentType = "application/excel";
9 StringWriter sw = new StringWriter();
10 HtmlTextWriter htw = new HtmlTextWriter(sw);
11 gv.RenderControl(htw);
12 // Style is added dynamically
13 Response.Write(style);
14 Response.Write(sw.ToString());
15 Response.End();
16 }
17 public override void VerifyRenderingInServerForm(Control control)
18 {
19 }
20
上面的行17的重载函数是必须的,否则会报“GridView要在有run=server的From体内”的错。2 {//带格式导出
3 string style = @"<style> .text { mso-number-format:\@; } </script>";
4 Response.ClearContent();
5 Response.Charset = "GB2312";
6 Response.ContentEncoding = System.Text.Encoding.UTF8;
7 Response.AddHeader("content-disposition", "attachment; filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
8 Response.ContentType = "application/excel";
9 StringWriter sw = new StringWriter();
10 HtmlTextWriter htw = new HtmlTextWriter(sw);
11 gv.RenderControl(htw);
12 // Style is added dynamically
13 Response.Write(style);
14 Response.Write(sw.ToString());
15 Response.End();
16 }
17 public override void VerifyRenderingInServerForm(Control control)
18 {
19 }
20
此外,变量style的作用是控制GridView列的样式,避免发生excel表中字符前导0被当成数字给截掉这样的问题, 通过Response.Write方法将其添加到输出流中。最后把样式添加到ID列。这一步需要在RowDataBound事件中完成:
1protected void gvUsers_RowDataBound(object sender, GridViewRowEventArgs e)
2{
3if (e.Row.RowType == DataControlRowType.DataRow)
4{
5e.Row.Cells[1].Attributes.Add("class", "text");
6}
7}
2{
3if (e.Row.RowType == DataControlRowType.DataRow)
4{
5e.Row.Cells[1].Attributes.Add("class", "text");
6}
7}