如何在 ASP.NET 中使用 Visual Basic .NET 向 Web 服务器上载文件

WebForm1.aspx

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="WebForm1.aspx.vb" Inherits="VBNetUpload.WebForm1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
  <HEAD>
    <title>WebForm1</title>
    <meta name="GENERATOR" content="Microsoft Visual Studio.NET 7.0">
    <meta name="CODE_LANGUAGE" content="Visual Basic 7.0">
    <meta name=vs_defaultClientScript content="JavaScript">
    <meta name=vs_targetSchema content="http://schemas.microsoft.com/intellisense/ie5">
  </HEAD>
  <body MS_POSITIONING="GridLayout">

    <form id="Form1" enctype="multipart/form-data" method="post" runat="server">

<INPUT type=file id=File1 name=File1 runat="server" >
<br>
<input type="submit" id="Submit1" value="Upload" runat="server" NAME="Submit1">


    </form>

  </body>
</HTML>

WebForm1.aspx.vb

Public Class WebForm1
    Inherits System.Web.UI.Page
    Protected WithEvents File1 As System.Web.UI.HtmlControls.HtmlInputFile
    Protected WithEvents Submit1 As System.Web.UI.HtmlControls.HtmlInputButton

#Region " Web Form Designer Generated Code "

    'This call is required by the Web Form Designer.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

    End Sub

    Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
        'CODEGEN: This method call is required by the Web Form Designer
        'Do not modify it using the code editor.
        InitializeComponent()
    End Sub

#End Region

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
    End Sub

    Private Sub Submit1_ServerClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Submit1.ServerClick

        If Not File1.PostedFile Is Nothing And File1.PostedFile.ContentLength > 0 Then
            Dim fn As String = System.IO.Path.GetFileName(File1.PostedFile.FileName)
            Dim SaveLocation as String = Server.MapPath("Data") & "\" & fn
            Try
                File1.PostedFile.SaveAs(SaveLocation)
                Response.Write("The file has been uploaded.")
            Catch Exc As Exception
                Response.Write("Error: " & Exc.Message)
            End Try
        Else
            Response.Write("Please select a file to upload.")
        End If

    End Sub
End Class
默认情况下，Machine.config 文件中的 <httpRuntime> 元素被设置为以下参数： <httpRuntime
executionTimeout="90"
maxRequestLength="4096"
useFullyQualifiedRedirectUrl="false"
minFreeThreads="8"
minLocalRequestFreeThreads="4"
appRequestQueueLimit="100"
/>

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