多文件上传

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1.MultiUpload.aspx

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="MultiUpload.aspx.vb" Inherits="aspxWeb.MultiUpload" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <title>多文件上传</title> </HEAD> <body> <form id="form1" method="post" runat="server" enctype="multipart/form-data"> <center> </asp:Label> <P id="MyFile"><INPUT type="file" size="50" NAME="File"></P> <P> <input type="button" value="增加(Add)" onclick="addFile()"> </asp:Button> <input onclick="this.form.reset()" type="button" value="重置(ReSet)"> </P> </center> <P align="center"> </asp:Label> </P> </form> </body></HTML>

2.MultiUpload.aspx.vb

Public Class MultiUpload

Inherits System.Web.UI.Page

Protected WithEvents Upload As System.Web.UI.WebControls.Button

Protected WithEvents MyTitle As System.Web.UI.WebControls.Label

Protected WithEvents strStatus As System.Web.UI.WebControls.Label

#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

MyTitle.Text = "<h3>多文件上传</h3>"

Upload.Text = "开始上传"

If (Me.IsPostBack) Then Me.SaveImages()

End Sub

Private Function SaveImages() As System.Boolean

'遍历File表单元素

Dim files As System.Web.HttpFileCollection = System.Web.HttpContext.Current.Request.Files

'状 ?信息

Dim strMsg As New System.Text.StringBuilder("上传的文件分别是：<hr color=red>")

Dim iFile As System.Int32

Try

For iFile = 0 To files.Count - 1

'检查文件扩展名字

Dim postedFile As System.Web.HttpPostedFile = files(iFile)

Dim fileName, fileExtension As System.String

fileName = System.IO.Path.GetFileName(postedFile.FileName)

If Not (fileName = String.Empty) Then

fileExtension = System.IO.Path.GetExtension(fileName)

strMsg.Append("上传的文件类型：" + postedFile.ContentType.ToString() + "<br>")

strMsg.Append("客户端文件地址：" + postedFile.FileName + "<br>")

strMsg.Append("上传文件的文件名：" + fileName + "<br>")

strMsg.Append("上传文件的扩展名：" + fileExtension + "<br><hr>")

'可根据扩展名字的不同保存到不同的文件夹

postedFile.SaveAs(System.Web.HttpContext.Current.Request.MapPath("images/") + fileName)

End If

strStatus.Text = strMsg.ToString()

Return True

Catch Ex As System.Exception

strStatus.Text = Ex.Message

Return False

End Try

End Function

End Class