用C#怎么实现文件上传？谢谢

用system.io空间及其里面的文件操作类，目录操作类
控件用htmlinputfile

解决方案 »

  1.   

    htmlinputfile
    这个控件在哪？
      

  2.   

    <%@ Page Language="C#" AutoEventWireup="True" %><html>
     <head>
     
        <script language="C#" runat="server">
     
           void Button1_Click(object Source, EventArgs e) 
           {
     
              if (Text1.Value == "") 
              {
                 Span1.InnerHtml = "Error: you must enter a file name";
                 return;
              }
     
              if (File1.PostedFile != null) 
              {
                 try
                 {
                    File1.PostedFile.SaveAs("c:\\temp\\"+Text1.Value);
                    Span1.InnerHtml = "File uploaded successfully to <b>c:\\temp\\" + 
                                      Text1.Value + "</b> on the Web server";
                 }
                 catch (Exception exc) 
                 {
                    Span1.InnerHtml = "Error saving file <b>c:\\temp\\" + 
                                      Text1.Value + "</b><br>" + exc.ToString();
                 }
              }
           }
     
        </script>
     
     </head>
     <body>
     
        <h3>HtmlInputFile Sample</h3>
     
        <form enctype="multipart/form-data" runat="server">
     
           Select File to Upload: 
           <input id="File1" 
                  type="file" 
                  runat="server">
     
           <p>
           Save as filename (no path): 
           <input id="Text1" 
                  type="text" 
                  runat="server">
     
           <p>
           <span id=Span1 
                 style="font: 8pt verdana;" 
                 runat="server" />
     
           <p>
           <input type=button 
                  id="Button1" 
                  value="Upload" 
                  OnServerClick="Button1_Click" 
                  runat="server">
     
        </form>
     
     </body>
     </html>
      

  3.   

    Namespace: System.Web.UI.HtmlControls
    HtmlInputFile Class