FileUpload控件难道不ASP.NET中工作 [英] fileupload control wouldnt work in ASP.NET

问题描述

林试图与ASP.NET简单uploadfile控制，
它难道不工作：

Im trying to make a simple uploadfile control with ASP.NET, and it wouldnt work:

<form id="form1" runat="server">
  <div>
    upload a file now.
      <asp:FileUpload ID="fileupload1" runat="server" />
      <asp:Button  ID="button1"  Text="Upload"  runat="server"  Width="73px" 
            onclick="button1_Click" />
    <asp:Label ID="Label1" runat="server"  Font-Bold="True"  ForeColor="#000099">
         </asp:Label>
  </div>  
</form>

和后面（的.cs）我的继承人code：

if(fileupload1.HasFile)
{
    try
    {
        if(fileupload1.PostedFile.ContentType ==  "image/jpeg")
        {
            if(fileupload1.PostedFile.ContentLength < 51200000)
            {
               string  filename = Path.GetFileName(fileupload1.FileName);
               fileupload1.SaveAs(Server.MapPath("~/img/") + filename);
               Label1.Text ="File uploaded successfully!";
            }
            else
                Label1.Text ="File maximum size is 500 Kb";
        }
        else
            Label1.Text ="Only JPEG files are accepted!";
    }
    catch(Exception exc)
    {
        Label1.Text = "The file could not be uploaded. The following error occured: "
                           + exc.Message;
    }
  }

的文件不在服务器psented $ P $ ..
什么想法？

the file is not presented in the server.. any thoughts?

当我断点，他们一切都有效，应用程序获取到code，这一切工作，但不会将其保存到文件夹..

when I breakpoint, they all goes valid, the application gets to the code, it all working , but wont save it to the folders..

推荐答案

这可能会或可能不会完全工作，但您需要在您的形式的是enctype 属性。

This may or may not work entirely, but you need to include an enctype attribute in your form.

<form id="form1" runat="server" enctype="multipart/form-data">

如果你不这样做，浏览器将无法传输文件。

If you don't do that, browsers won't transfer the file.

在这里看到：的https：//developer.mozilla .ORG / EN-US /文档/ HTML /元/形式＃ATTR-ENCTYPE

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