saina2006
یک شنبه 10 شهریور 1387, 01:06 صبح
<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub UploadButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
' Specify the path on the server to
' save the uploaded file to.
Dim savePath As String = "c:\temp\uploads\"
' Before attempting to save the file, verify
' that the FileUpload control contains a file.
If (FileUpload1.HasFile) Then
' Get the size in bytes of the file to upload.
Dim fileSize As Integer = FileUpload1.PostedFile.ContentLength
' Allow only files less than 2,100,000 bytes (approximately 2 MB) to be uploaded.
If (fileSize < 2100000) Then
' Append the name of the uploaded file to the path.
savePath += Server.HtmlEncode(FileUpload1.FileName)
' Call the SaveAs method to save the
' uploaded file to the specified path.
' This example does not perform all
' the necessary error checking.
' If a file with the same name
' already exists in the specified path,
' the uploaded file overwrites it.
FileUpload1.SaveAs(savePath)
' Notify the user that the file was uploaded successfully.
UploadStatusLabel.Text = "Your file was uploaded successfully."
Else
' Notify the user why their file was not uploaded.
UploadStatusLabel.Text = "Your file was not uploaded because " + _
"it exceeds the 2 MB size limit."
End If
Else
' Notify the user that a file was not uploaded.
UploadStatusLabel.Text = "You did not specify a file to upload."
End If
End Sub
</script>
<html >
<head runat="server">
<title>FileUpload Class Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h4>Select a file to upload:</h4>
<asp:FileUpload id="FileUpload1"
runat="server">
</asp:FileUpload>
<br/><br/>
<asp:Button id="UploadButton"
Text="Upload file"
OnClick="UploadButton_Click"
runat="server">
</asp:Button>
<hr />
<asp:Label id="UploadStatusLabel"
runat="server">
</asp:Label>
</div>
</form>
</body>
</html>
توضیحات کاملتر هم توی لینک زیر هست
http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.fileupload.aspx