Suppress login dialog when impersonation on?

[Gary H.]

Does anyone know how I can suppress the "Enter Network
Password" dialog when attempting to enumerate directories
and/or files in ASP.NET? I want my code to automatically
generate an exception if the current user is not allowed
to access a share folder or file instead of prompting the
user to enter a username/pwd. I'm using:

dirs = Directory.GetDirectories(sPath)

Or, is there an easier way to determine if the current
user has access to a share folder/file?

Thanks, Gary.

[Felix Wu [MSFT]]

Hi Gary ,

You can use the try-catch block to catch the permission denied exceptions.
When you attempt to access files/folders that you are granted access to,
you will get SecurityException exceptions. You can catch the exceptions and
return a message to the user that he/her has no permission to the resource.

For example:

private void Button1_Click(object sender, System.EventArgs e)
{
try
{
string[] dirs=Directory.GetDirectories("H:\\WUTemp");
foreach(string dir in dirs)
DropDownList1.Items.Add(dir);
}
catch(Exception e1)
{
//Return a message to users
Label1.Text =e1.Message;
}
}

Regards,

Felix Wu
=======
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>Content-Class: urn:content-classes:message
>From: "Gary H." <ghardley@chaslevy.com>
>Sender: "Gary H." <ghardley@chaslevy.com>
>Subject: Suppress login dialog when impersonation on?
>Date: Mon, 14 Jul 2003 09:17:15 -0700
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>
>Does anyone know how I can suppress the "Enter Network
>Password" dialog when attempting to enumerate directories
>and/or files in ASP.NET? I want my code to automatically
>generate an exception if the current user is not allowed
>to access a share folder or file instead of prompting the
>user to enter a username/pwd. I'm using:
>
>dirs = Directory.GetDirectories(sPath)
>
>Or, is there an easier way to determine if the current
>user has access to a share folder/file?
>
>Thanks, Gary.
>
>