/// <summary>

/// 导出Excel

/// </summary>

/// <param name="dtData"></param>

public void DataTable2Excel(System.Data.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

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

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();

}

}