在asp.net 2.0中，上傳文件時變的比較方便了，因為有了fileupload控件，使用十分簡單，
if (FileUpload1.HasFile)
            try
            {
                FileUpload1.SaveAs("d://luceneData//" + FileUpload1.FileName);
                Label1.Text = "File name: " +
                     FileUpload1.PostedFile.FileName + "<br>" +
                     FileUpload1.PostedFile.ContentLength + " kb<br>" +
                     "Content type: " +
                     FileUpload1.PostedFile.ContentType;
            }
            catch (Exception ex)
            {
                Label1.Text = "ERROR: " + ex.Message.ToString();
            }
        else
        {
            Label1.Text = "You have not specified a file.";
        }
還可以在web.config文件中，突破默認上傳限制的4MB，比如
<htt

設置maxRequestLenth屬性，這里為11000KB，即11MB。

而對于多文件上傳，也很簡單，比如一個例子
string filepath = "d://luceneData//";
        HttpFileCollection uploadedFiles = Request.Files;

        for (int i = 0; i < uploadedFiles.Count; i++)
        {
            HttpPostedFile userPostedFile = uploadedFiles[i];

            try
            {
                if (userPostedFile.ContentLength > 0)
                {
                    Label1.Text += "<u>File #" + (i + 1) +
                       "</u><br>";
                    Label1.Text += "File Content Type: " +
                       userPostedFile.ContentType + "<br>";
                    Label1.Text += "File Size: " +
                       userPostedFile.ContentLength + "kb<br>";
                    Label1.Text += "File Name: " +
                       userPostedFile.FileName + "<br>";

                    userPostedFile.SaveAs(filepath + "http://" +
                       System.IO.Path.GetFileName(userPostedFile.FileName));

                    Label1.Text += "Location where saved: " +
                       filepath + "http://" +
                       System.IO.Path.GetFileName(userPostedFile.FileName) +
                       "<p>";
                }
            }
            catch (Exception Ex)
            {
                Label1.Text += "Error: <br>" + Ex.Message;
            }
        }

    }

http://www.49028c.com/jackyrong/archive/2006/09/26/514969.html