.Net中导出Excel中身份证等数字串的解决方式

public static void DataTableToExcel(System.Data.DataTable dtData, String FileName)

{

　　GridView dgExport = null;

　 HttpContext curContext = HttpContext.Current;

　　StringWriter strWriter = null;

　　HtmlTextWriter htmlWriter = null;

　　if (dtData != null)

　　 {

　　　　 HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);

curContext.Response.AddHeader("content-disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8) + ".xls");

curContext.Response.ContentType = "application/vnd.ms-excel";

curContext.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-7");

curContext.Response.Charset = "GB2312";

strWriter = new StringWriter();

htmlWriter = new HtmlTextWriter(strWriter);

dgExport = new GridView();

dgExport.RowDataBound += (GridViewFormat); //在GridView绑定数据时，将数据格式化

dgExport.DataSource = dtData.DefaultView;

dgExport.AllowPaging = false;

dgExport.DataBind();

dgExport.RenderControl(htmlWriter);

curContext.Response.Write(strWriter.ToString());

curContext.Response.End();

}

}

protected static void GridViewFormat(object sender, GridViewRowEventArgs e)

{

　 　 //1） 文本：vnd.ms-excel.numberformat:@

//2） 日期：vnd.ms-excel.numberformat:yyyy/mm/dd

//3） 数字：vnd.ms-excel.numberformat:#,##0.00

//4） 货币：vnd.ms-excel.numberformat:￥#,##0.00

//5） 百分比：vnd.ms-excel.numberformat: #0.00%

for (int i = 0; i < e.Row.Cells.Count; i++)

{

if (e.Row.RowType == DataControlRowType.DataRow)

　　　　{

e.Row.Cells[i].Attributes.Add("style", "vnd.ms-excel.numberformat:@");

　　　　}

}

}