使用Response.TransmitFile下载文件但也包含页面源

Question

下面是有问题的代码，我下载了一个csv然而它将页面源附加到底部有关如何防止这种情况的任何想法？

            var priceList = Test();
            const string downloadName = "PriceList.csv";
            var fs = new FileStream(downloadName, FileMode.Create);

            var csv = new CsvHelper.CsvHelper(fs);
            csv.Writer.WriteRecords(priceList);
            Response.ClearContent();

            //not sure what the correct content type is. This is probally wrong
            Response.ContentType = "application/xls";
            //Setting size is optional               
            Response.AddHeader("Content-Disposition",
               "attachment; filename=" + downloadName + "; size=" + fs.Length.ToString());
            var fn = fs.Name;
            fs.Close();
            loadingImage.Visible = false;
            Response.TransmitFile(fn);
            Response.Flush();

Answer 1

调用Response.End() 。

另外，为什么保存文件只是为了重新发送？ 充其量这是浪费，但如果你重复使用这个名字，那么如果有两个人同时点击这个页面你会遇到竞争条件。 使用var csv = new CsvHelper.CsvHelper(Response.OutputStream)而不是发送文件，所以你直接写入浏览器（你必须首先发送你的标题）。

此外，CSV文件的内容类型是text/csv 。

Answer 2

刷新流或尝试强制下载后添加Response.End()方法。

Answer 3

var priceList = Test();
        const string downloadName = "PriceList.csv";
        var fs = new FileStream(downloadName, FileMode.Create);

        var csv = new CsvHelper.CsvHelper(fs);
        csv.Writer.WriteRecords(priceList);
        Response.ClearContent();

        //not sure what the correct content type is. This is probally wrong
        Response.ContentType = "application/xls";
        //Setting size is optional               
        Response.AddHeader("Content-Disposition",
           "attachment; filename=" + downloadName + "; size=" + fs.Length.ToString());
        var fn = fs.Name;
        fs.Close();
        loadingImage.Visible = false;
        Response.TransmitFile(fn);
        Response.Flush();
        Response.End();