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.net 多文件上傳API代碼

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>多文件上傳</title>

<script language="JavaScript">

function addFile()

{

var str = '<INPUT type="file" size="50" NAME="File">'

document.getElementById('MyFile').insertAdjacentHTML("beforeEnd",str)

}

</script>

</HEAD>

<body>

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

<center>

<asp:Label Runat="server" ID="MyTitle"></asp:Label>

<P id="MyFile"><INPUT type="file" size="50" NAME="File"></P>

<P>

<input type="button" value="增加(Add)" _disabledevent="addFile()">

<asp:Button Runat="server" Text="上傳" ID="Upload"></asp:Button>

<input _disabledevent="this.form.reset()" type="button" value="重置(ReSet)">

</P>

</center>

<P align="center">

<asp:Label id="strStatus" runat="server" Font-Names="宋體" Font-Bold="True"

Font-Size="9pt" Width="500px" BorderStyle="None" BorderColor="White"></asp:Label>

</P>

</form>

</body>

</HTML>

後代碼: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>多文件上傳</h3>"

Upload.Text = "開始上傳"

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

End Sub

Private Function SaveImages() As System.Boolean

'遍歷File表單元素

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

'狀態信息

Dim strMsg As New System.Text.StringBuilder("上傳的文件分別是:<hr color=red>")

Dim iFile As System.Int32

Try

For iFile = 0 To files.Count - 1

'檢查文件擴展名字

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("上傳的文件類型:" + postedFile.ContentType.ToString() + "<br>")

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

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

strMsg.Append("上傳文件的擴展名:" + fileExtension + "<br><hr>")

'可根據擴展名字的不同保存到不同的文件夾

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

End If

Next

strStatus.Text = strMsg.ToString()

Return True

Catch Ex As System.Exception

strStatus.Text = Ex.Message

Return False

End Try

End Function

End Class

目前萬網虛擬主機針對無組件上傳免費支持;aspxWeb.MultiUpload等組件,需要在萬網的獨立主機上註冊後使用,虛擬主機暫時無法支持。以上實例僅供參考。

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