在ASP.NET中实现多文件上传 (转)[@more@]
w3c</a>//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>多文件上传</title>
</HEAD>
<body>
<fo href="tag-415-1.html">RM </a>id="form1" method="post" runat="server" enctype="multipart/form-data">
<center>
<asp runat="server" id="MyTitle"></asp>
<p><INPUT type="file" size="50" name="File"></P>
<p>
<input type="button" value="增加(Add)" onclick="addFile()">
<asp runat="server" text="上传" id="Upload"></asp>
<input onclick="this.form.reset()" type="button" value="重置(ReSet)">
</P>
</center>
<p>
<asp id="strStatus" runat="server" font-names="宋体" font-bold="True" font-size="9pt" width="500px" borderstyle="None" bordercolor="White"></asp>
</P>
</form>
</body>
</HTML>
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 href="tag-268-1.html">bug</a>gerStepThrough()> Private Sub InitializeComponent()
End Sub
Private Sub Page_Init(ByVal sender As System.<a href="tag-252-1.html">object</a>, 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
'状态信息
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
Next
strStatus.Text = strMsg.ToString()
Return True
Catch Ex As System.Exception
strStatus.Text = Ex.Message
Return False
End Try
End Function
End Class
在以前的web应用中，上传文件是个很麻烦的事，现在有了.NET，文件上传变得轻而易举。下面的这个例子实现了多文件上传功能。可以动态添加输入表单，上传的文件数量没有限制。代码如下：
dotnetplayground.com/MultiUPLOAD.aspx" target=_blank>查看例子
MultiUpload.aspx
后代码：MultiUpload.aspx.vb
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/10752019/viewspace-957931/ ，如需转载，请注明出处，否则将追究法律责任。
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