上传的文件是否采用制表符分隔格式

Question

I am using ASP.Net fileupload control to allow users to upload a tab-delimited file with a txt extension.

How would I make sure in code that the file is tab-delimited? I am using C#.

Currently, I am using following code.

        StreamReader stream = null;
        if (FileUpload1.HasFile)
        {
            if (FileUpload1.FileName.EndsWith("txt") )
            {
                string filename = Path.Combine(Server.MapPath("~/files"), Guid.NewGuid().ToString() + ".txt");
                FileUpload1.PostedFile.SaveAs(filename);
                Session["UploadedFileName"] = filename;
                stream = new StreamReader(FileUpload1.PostedFile.InputStream);
            }
            else
            {
                lblMessage.Text = "File format not supported. Please use a tab delimited .txt file.";
                pnlMessage.Visible = true;
                return;
            }
        }
        else
        {
            lblMessage.Text = "You must select a file to upload.";
            pnlMessage.Visible = true;
            return;
        }

Answer 1

服务器控件一次只能上传一个文件，不支持上传多个文件