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Hello,
I want to provide the ability to log on to a web application on our
intranet using different credentials like they do in Sharepoint 2007. When a
user hits the site, i want him automatically loggged in using his windows
credentials, but be able to swicth to different windows credentials from
within the web app. How do I go about doing this?

My current configuration is:
<authentication mode="Windows" />
<identity impersonate="true"/>

<membership defaultProvider="MyADMembershipProvider">
<providers>
<add connectionStringName="ADConnectionString"
connectionUsername="ust\rwg" enableSearchMethods="true"
connectionPassword="aruba7" name="MyADMembershipProvider"
type="System.Web.Security.ActiveDirectoryMembershi pProvider,
System.Web, Version=2.0.0.0,
Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
</providers>
</membership>

"gover" <> wrote in message
news:55589824-FDD4-4BCE-8F21-...
> Hello,
> I want to provide the ability to log on to a web application on our
> intranet using different credentials like they do in Sharepoint 2007.
> When a
> user hits the site, i want him automatically loggged in using his windows
> credentials, but be able to swicth to different windows credentials from
> within the web app. How do I go about doing this?
>
> My current configuration is:
> <authentication mode="Windows" />
> <identity impersonate="true"/>
>
> <membership defaultProvider="MyADMembershipProvider">
> <providers>
> <add connectionStringName="ADConnectionString"
> connectionUsername="ust\rwg" enableSearchMethods="true"
> connectionPassword="aruba7" name="MyADMembershipProvider"
> type="System.Web.Security.ActiveDirectoryMembershi pProvider,
> System.Web, Version=2.0.0.0,
> Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
> </providers>
> </membership>
>

Sharepoint doesn't impersonate the user. If impersonation is enabled,
ASP.NET executes under the authenticated user's user account

In your case, I think, you can impersonate a specific user in a code, as per
example:
http://support.microsoft.com/kb/306158

"Alexey Smirnov" <> wrote in message
news:%...
>
> "gover" <> wrote in message
> news:55589824-FDD4-4BCE-8F21-...
>> Hello,
>> I want to provide the ability to log on to a web application on our
>> intranet using different credentials like they do in Sharepoint 2007.
>> When a
>> user hits the site, i want him automatically loggged in using his windows
>> credentials, but be able to swicth to different windows credentials from
>> within the web app. How do I go about doing this?

yet another thought about this. To force the logon prompt send to the
browser Response.Status = "401 Unauthorized". A 401 HTTP response code tells
the client that authentication information is required. You should also
specify what kind of authentication should be used. A special HTTP header
should be sent for that. For Windows Authentication it is "WWW-Authenticate
NTLM", where NTLM is a Windows-specific method.

Example:

If IsNothing(Session("NTLM")) Then

Session.Add("NTLM", "ok")
Response.Status = "401 Unauthorized"
Response.AddHeader("WWW-Authenticate", "NTLM")
Response.End()

Else

Session.Remove("NTLM")
Response.Redirect("/default.aspx")

End If

Put this code in the login.aspx and use this page to change the account.

Hope it works