#region 将DataTable数据导出到EXCEL,调用该方法后自动返回可下载的文件流
/// <summary>
/// 将DataTable数据导出到EXCEL,调用该方法后自动返回可下载的文件流
/// </summary>
/// <param name="dtData">要导出的数据源</param>
public static void DataTable2Excel(System.Data.DataTable dtData)
{
System.Web.UI.WebControls.GridView gvExport = 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.GetEncoding("gb2312");
curContext.Response.Charset = "utf-8";
// 导出excel文件
strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
// 为了解决gvData中可能进行了分页的情况,需要重新定义一个无分页的GridView
gvExport = new System.Web.UI.WebControls.GridView();
gvExport.DataSource = dtData.DefaultView;
gvExport.AllowPaging = false;
gvExport.DataBind();
// 返回客户端
gvExport.RenderControl(htmlWriter);
curContext.Response.Write("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\" />" + strWriter.ToString());
curContext.Response.End();
}
}
#endregion