调用的方法传值
Export(dt, "Cal_Report_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xls");
参数值1:查询到的数据
参数值2:加一个时间防止重名
参数值3:加后缀名
方法内容:
private void Export(System.Data.DataTable dtData, string FileName)
{
System.Web.UI.WebControls.DataGrid dgExport = null;
// 当前对话
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
// IO用于导出并返回excel文件
System.IO.StringWriter strWriter = null;
System.Web.UI.HtmlTextWriter htmlWriter = null;
if (dtData != null)
{
// 设置编码和附件格式
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
curContext.Response.Charset = "";
Response.AddHeader("Content-Disposition", "attachment;filename=" + FileName);
// 导出excel文件
strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
// 为了解决dgData中可能进行了分页的情况,需要重新定义一个无分页的DataGrid
dgExport = new System.Web.UI.WebControls.DataGrid();
dgExport.DataSource = dtData.DefaultView;
dgExport.AllowPaging = false;
dgExport.DataBind();
// 返回客户端
dgExport.RenderControl(htmlWriter);
curContext.Response.Write(strWriter.ToString());
curContext.Response.End();
}
}