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C#导出数据到Excel的简单代码

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public void CreateExcel1(DataSet ds, string typeid, string FileName)
{
    HttpResponse resp = System.Web.HttpContext.Current.Response;

    resp.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
    resp.AppendHeader("Content-Disposition", "attachment;filename=" + FileName);
    resp.Charset = "UTF-8";
    //HttpContext.Current.Response.ContentEncoding =System.Text.Encoding.Default;
    resp.ContentType = "application/ms-excel";//image/JPEG;text/HTML;image/GIF;vnd.ms-excel
    string colHeaders = "", ls_item = "";
    int i = 0;

    //定义表对象与行对像,同时用DataSet对其值进行初始化
    DataTable dt = ds.Tables[0];
    DataRow[] myRow = dt.Select("");
    // typeid=="1"时导出为EXCEL格式文件;typeid=="2"时导出为XML格式文件
    if (typeid == "1")
    {

        //取得数据表各列标题,各标题之间以\\t分割,最后一个列标题后加回车符
        colHeaders += "<table cellspacing=\\"0\\" cellpadding=\\"5\\" rules=\\"all\\" border=\\"1\\"> <tr style=\\"font-weight: bold; white-space: nowrap;\\">";
        for (i = 0; i < dt.Columns.Count - 1; i++)
            //colHeaders+=dt.Columns[i].Caption.ToString()+"\\t";
            colHeaders += "<td>" + dt.Columns[i].Caption.ToString() + "</td>";
        //colHeaders +=dt.Columns[i].Caption.ToString() +"\\n"; 
        colHeaders += "<td>" + dt.Columns[i].Caption.ToString() + "</td></tr>";
        //向HTTP输出流中写入取得的数据信息
        resp.Write(colHeaders);
        //逐行处理数据 
        foreach (DataRow row in myRow)
        {
            ls_item += "<tr>";
            //在当前行中,逐列获得数据,数据之间以\\t分割,结束时加回车符\\n
            for (i = 0; i < dt.Columns.Count - 1; i++)
                //ls_item +=row[i].ToString().Replace("\\t","") + "\\t"; 
                ls_item += "<td style=\\"vnd.ms-excel.numberformat:@\\">" + row[i].ToString().Replace("\\t", "") + "</td>";
            ls_item += "<td>" + row[i].ToString().Replace("\\t", "") + "</td></tr>";
            //当前行数据写入HTTP输出流,并且置空ls_item以便下行数据 
            resp.Write(ls_item);
            ls_item = "";
        }
    }
    else
    {
        if (typeid == "2")
        {
            //从DataSet中直接导出XML数据并且写到HTTP输出流中
            resp.Write(ds.GetXml());
        }
    }
    //写缓冲区中的数据到HTTP头文件中
    resp.End();
}
//该片段来自于http://outofmemory.cn

标签:c#,.net,Excel

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