Question

我有一个带有以下标记的html文件：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Upload Page</title>
</head>
<body>
    <form id="frmUpload" action="UploadHandler.ashx" method="post" enctype="multipart/form-data">        
        <input type="file" /><br />
        <br />
        <input id="Submit1" type="submit" value="Submit" />
    </form>
</body>
</html>

我有一个处理程序（ashx）文件来处理上传，如下所示：

<%@ WebHandler Language="VB" Class="UploadHandler" %>

Imports System
Imports System.Web
Imports System.Diagnostics

Public Class UploadHandler : Implements IHttpHandler

    Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
        Dim str As String
        str = "EncType = " & context.Request.ContentType
        str &= vbCrLf
        str &= "File Count = " & context.Request.Files.Count
        context.Response.ContentType = "text/plain"
        context.Response.Write(str)
    End Sub

    Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property

End Class

当我使用html页面时，我选择一个文件并进行提交，我得到这样的回复：

EncType = multipart/form-data; boundary=---------------------------7d9232a130656
File Count = 0

我原本希望文件计数在这里是1，但它是0 ......出了什么问题？

Answer 1

尝试为输入标记命名：

<input type="file" name="fileToUpload" />

Answer 2

您的文件name上没有<input>属性：

<input type="file" name="myFile"/><br />

需要了解为什么在这种情况下不会发生上传？

2 个答案: