长数字正常导入Excel

 长数字正常导入Excel

例子程序如下：  
        string data1 = "000000001";
        long data2 = 123456789123456789;
        System.IO.StringWriter sw = new System.IO.StringWriter();
        sw.WriteLine("原数字1/t转换后数字1/t原数字2/t转换数字2");
        for (int i = 0; i < 10; i++)
        {
            //sw.WriteLine(data1 + "/t" + "=/"" + data1 + "/"/t" + data2 + "/t" + "=/"" + data2.ToString() + "/"");
            sw.WriteLine( "=/"" + data1 + "/"");
        }
        sw.Close();
        Response.Buffer = true;
        Response.Charset = "";
        Response.AppendHeader("Content-Disposition", "attachment;filename=aa.xls");
        Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");//设置输出流为简体中文
        Response.Write(sw);
        Response.End();
 

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