asp.net 2的文件上传-脚本在线

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asp.net 2的文件上传

作者：互联网

2009-07-01

ASP.NET教程

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 + "
" +
                     FileUpload1.PostedFile.ContentLength + " kb
" +
                     "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
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 += "File #" + (i + 1) +
                       "
";
                    Label1.Text += "File Content Type: " +
                       userPostedFile.ContentType + "
";
                    Label1.Text += "File Size: " +
                       userPostedFile.ContentLength + "kb
";
                    Label1.Text += "File Name: " +
                       userPostedFile.FileName + "
";

userPostedFile.SaveAs(filepath + "\" +
System.IO.Path.GetFileName(userPostedFile.FileName));

                    Label1.Text += "Location where saved: " +
                       filepath + "\" +
                       System.IO.Path.GetFileName(userPostedFile.FileName) +
                       "

";
                }
            }
            catch (Exception Ex)
            {
                Label1.Text += "Error:
" + Ex.Message;
            }
        }

}