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分享一个导出Excel的类

2012-10-09 09:55 627 查看
直接上源码不解释:

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public static class ExportExcel
{
public static void ExportByDataSet(DataSet ds, string fileName)
{
DataTable dtData = ds.Tables[0];

//删除列,修改列头显示
//dtData.Columns.Remove("");
//dtData.Columns[0].ColumnName = "行ID";

dtData.AcceptChanges();

System.Web.UI.WebControls.GridView dgExport = null;
System.Web.HttpContext curContext = System.Web.HttpContext.Current;
System.IO.StringWriter strWriter = null;
System.Web.UI.HtmlTextWriter htmlWriter = null;
System.Web.HttpContext.Current.Response.Clear();
System.Web.HttpContext.Current.Response.HeaderEncoding = System.Text.Encoding.GetEncoding("utf-8");
curContext.Response.ContentType = "application/vnd.ms-excel";

fileName = fileName + ".xls";

curContext.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(fileName));
curContext.Response.ContentEncoding = System.Text.Encoding.UTF8;
System.Web.HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.Default;
curContext.Response.Charset = "";

strWriter = new System.IO.StringWriter();
htmlWriter = new System.Web.UI.HtmlTextWriter(strWriter);
dgExport = new System.Web.UI.WebControls.GridView();
dgExport.DataSource = dtData.DefaultView;
dgExport.AllowPaging = false;
dgExport.DataBind();
dgExport.RenderControl(htmlWriter);
curContext.Response.Write(strWriter.ToString());
curContext.Response.End();
}

}


使用实例(static 方法,可以被直接调用):

//ds是某DataSet对象,而后面是导出的Excel保存名字
ExportExcel.ExportByDataSet(ds, "PDLRFQ-" + DateTime.Now.ToString("yyyyMMdd"));
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