ASP.NET 2.0 提供新 FileUpload 服务器控件来上传文件。
1
<%@ Page Language="C#" %>
2<script runat="server">
3 protected void Button1_Click(object sender, EventArgs e)
4
{
5
if (FileUpload1.HasFile)
6 try
7
{
8 FileUpload1.SaveAs("C:\\Uploads\\" +
9 FileUpload1.FileName);
10 Label1.Text = "File name: " +
11 FileUpload1.PostedFile.FileName + "<br>" +
12 FileUpload1.PostedFile.ContentLength + " kb<br>" +
13 "Content type: " +
14 FileUpload1.PostedFile.ContentType;
15
}
16 catch (Exception ex)
17 {
18 Label1.Text = "ERROR: " + ex.Message.ToString();
19 }
20 else
21 {
22 Label1.Text = "You have not specified a file.";
23 }
24
}
25</script>
26
27<HTML xmlns="http://www.w3.org/1999/xHTML" >
28<head runat="server">
29 <title>Upload Files</title>
30</head>
31<body>
32 <form id="form1" runat="server">
33 <div>
34 <ASP:FileUpload ID="FileUpload1" runat="server" /><br />
35 <br />
36 <ASP:Button ID="Button1" runat="server" OnClick="Button1_Click"
37 Text="Upload File" /> <br />
38 <br />
39 <ASP:Label ID="Label1" runat="server"></ASP:Label></div>
40 </form>
41</body>
42</HTML>
43
使用验证控件限制上载到服务器的文件类型
<ASP:FileUpload ID="FileUpload1" runat="server" /><br /><br /><ASP:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Upload File" /> <br /><br /><ASP:Label ID="Label1" runat="server"></ASP:Label><ASP:RegularExpressionValidator id="RegularExpressionValidator1" runat="server" ErrorMessage="Only mp3, m3u or mpeg files are allowed!" ValidationExpression="^(([a-zA-Z]:)|(\\{2}\w+)\$?)(\\(\w[\w].*)) +(.mp3|.MP3|.mpeg|.MPEG|.m3u|.M3U)$" ControlToValidate="FileUpload1"></ASP:RegularExpressionValidator><br /><ASP:RequiredFieldValidator id="RequiredFieldValidator1" runat="server" ErrorMessage="This is a required field!" ControlToValidate="FileUpload1"></ASP:RequiredFieldValidator>
同时上传多个文件
1protected void Button1_Click(object sender, EventArgs e)
2{
3 string filepath = "C:\\Uploads";
4 HttpFileCollection uploadedFiles = Request.Files;
5
6 for (int i = 0; i < uploadedFiles.Count; i++)
7 {
8 HttpPostedFile userPostedFile = uploadedFiles[i];
9
10 try
11 {
12 if (userPostedFile.ContentLength > 0 )
13 {
14 Label1.Text += "File #" + (i+1) +
15 "";
16 Label1.Text += "File Content Type: " +
17 userPostedFile.ContentType + "";
18 Label1.Text += "File Size: " +
19 userPostedFile.ContentLength + "kb";
20 Label1.Text += "File Name: " +
21 userPostedFile.FileName + "";
22
23 userPostedFile.SaveAs(filepath + "\\" +
24 System.IO.Path.GetFileName(userPostedFile.FileName));
25
26 Label1.Text += "Location where saved: " +
27 filepath + "\\" +
28 System.IO.Path.GetFileName(userPostedFile.FileName) +
29 "
30";
31 }
32 }
33 catch (Exception Ex)
34 {
35 Label1.Text += "Error: " + Ex.Message;
36 }
37 }
38}
39
40
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