急急急 为何这里出现未将对象引用设置到对象的实例错误 如何阻止?
代码如下 如何阻止?
<% @ import Namespace="System.IO"%>
<script language="vb" runat="server">
sub enter_click(sender as object,e as eventargs)
dim exc as exception
'try
dim filename,filepath,temp as string
temp = uploadfile.postedfile.filename
filename=path.getfilename(temp)
filepath=server.mappath("file")& "\" & filename
uploadfile.postedfile.saveas(filepath)
response.redirect("../isOk.htm")
'catch exc
message.text ="保存文件时出错<br>" & exc.tostring()
'end try
end sub
Sub cancel_Click(ByVal sender As Object, ByVal e As EventArgs)
response.redirect("manioadd.aspx")
End Sub
</script>
<html>
<body>
<h4 align="center">上传文件</h4>
<form enctype="multipart/form-data" runat="server"/>
选择文件:<input id ="uploadfile" type="file" runat="server"/>
<br> <input type="button" id ="enter" value=" 提 交 " onserverclick="enter_click" runat="server"/>
<input type="button" id ="Button1" value=" 重 置 " onserverclick="cancel_click" runat="server"/>
<asp:Label ID ="message" Runat="server"/>
</form>
</body>
</html>