导出主要考虑响应流的问题
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.AddHeader("Content-Disposition", "attachment; filename=" + filename + ".xls");
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
public void ExportExecl(DataTable dtData)
{
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
DateTime dt = DateTime.Now;
string filename = dt.Year.ToString() + dt.Month.ToString() + dt.Day.ToString() + dt.Hour.ToString() + dt.Minute.ToString() + dt.Second.ToString();
curContext.Response.ContentType = "application/vnd.ms-excel";
curContext.Response.AddHeader("Content-Disposition", "attachment; filename=" + filename + ".xls");
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
curContext.Response.Charset = "";
// 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();
}
}