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    asp.net 2的文件上传

    2018-04-05 08:31:45 次阅读 稿源:互联网
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      在asp.net 2.0中,上传文件时变的比较方便了,因为有了fileupload控件,使用十分简单,
      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.";
              }
      还可以在web.config文件中,突破默认上传限制的4MB,比如
      <httpRuntime
      executionTimeout="110"
      maxRequestLength="11000"
      requestLengthDiskThreshold="80"
      useFullyQualifiedRedirectUrl="false"
      minFreeThreads="8"
      minLocalRequestFreeThreads="4"
      appRequestQueueLimit="5000"
      enableKernelOutputCache="true"
      enableVersionHeader="true"
      requireRootedSaveAsPath="true"
      enable="true"
      shutdownTimeout="90"
      delayNotificationTimeout="5"
      waitChangeNotification="0"
      maxWaitChangeNotification="0"
      enableHeaderChecking="true"
      sendCacheControlHeader="true"
      apartmentThreading="false" />

      设置maxRequestLenth属性,这里为11000KB,即11MB。

      而对于多文件上传,也很简单,比如一个例子
      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 + "" +
                             System.IO.Path.GetFileName(userPostedFile.FileName));

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

          }

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

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