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Adding a UAC Manifest to Managed Code

  • Artigo

The UAC feature of Vista is one of my favorite new features -- it really makes running as a non-admin much less painful than it has been in the past.  One of the requirements that UAC puts on developers is that we must mark our applications with manifests which declare if the application would like to run elevated or not.  Documentation for this manifest format can be found on MSDN, where you can find the schema and information about what the various settings mean.

If you'd like to add one of these manifests to your managed application, the steps are relatively straight forward:

  1. Create a manifest resource
  2. Compile the resource
  3. Embed it in your application

1. Create a manifest resource

The first step is to create a resource file containing your manifest.  The manifest should be of type RT_MANIFEST, and have id 1 for an exe (id 2 for a dll).  For instance, the resource script for an exe that does not need to elevate might be saved in UacManifest.rc and look like this:

#include <winuser.h>
#define IDR_MANIFEST 1 // 2 for a DLL

IDR_MANIFEST RT_MANIFEST MOVEABLE PURE
{
    "<assembly xmlns=""urn:schemas-microsoft-com:asm.v1"" manifestVersion=""1.0"">
       <asmv3:trustInfo xmlns:asmv3=""urn:schemas-microsoft-com:asm.v3"">
         <asmv3:security>
           <asmv3:requestedPrivileges>
             <asmv3:requestedExecutionLevel
               level=""asInvoker""
               uiAccess=""false"" />
           </asmv3:requestedPrivileges>
         </asmv3:security>
       </asmv3:trustInfo>
     </assembly>"
}

2. Compile the resource

You'll need to install the Platform SDK for this step so that you have access to the rc tool and the winuser.h header.  Once you've gotten the SDK setup, you can then compile your resource script into a .res file:

C:\src\App>rc.exe UacManifest.rc

Which will create a UacManifest.res for you.

3. Embed it in your application

Now that you've compiled your .res file, you can pass it to your managed compiler when building your application to embed in your exe.  The exact switch will vary depending on your compiler:

Compiler Switch
C# /win32res
VB /win32resource
ILAsm /resource
AL /win32res

You can also select the resource file in the project properties in Visual Studio.

Comments

  • Anonymous
    April 06, 2006
    Please, add an <assemblyIdentity> to the sample. Give it a random name, I don't care. But I don't like assembly without assembly name.

  • Anonymous
    April 07, 2006
    Yet another note to self, must get round to reading these in detail: -- Microsoft Windows Vista Developer Center : Developer Best Practices and Guidelines for Applications in a Least Privileged Environment -- Adding a UAC Manifest to Managed Code...

  • Anonymous
    April 20, 2006












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  • Anonymous
    August 24, 2006
    With our current developer tools, there's no immediately obvious way to embed a manifest in a managed...

  • Anonymous
    October 11, 2006
    With our current developer tools, there's no immediately obvious way to embed a manifest in a managed

  • Anonymous
    October 13, 2006
    PingBack from http://systemsengineering.wordpress.com/2006/10/13/adding-a-manifest-to-a-vista-application/

  • Anonymous
    November 06, 2006
    The comment has been removed

  • Anonymous
    November 14, 2006
    Thanks for the tip Herbert!

  • Anonymous
    February 13, 2007
    You lose more than the application icon. It appears like you lose the Assembly version information as well. So now you have to duplicate the VERSIONINFO resource as well, instead of relying on the [assembly: ...] attribute that you could embed in your project.

  • Anonymous
    March 05, 2007
    Entweder Orcas verwenden (built in support for manifest integration) oder http://blogs.msdn.com/shawnfa/archive/2006/04/06/568563.aspx

  • Anonymous
    April 19, 2007
    转载：如何通过添加Manifest指定程序在Vista上面需要提升权限运行(Elevated)

  • Anonymous
    May 11, 2007
    If you authenticode sign the assembly, you get the friendly "Continue/Cancel" consent UAC prompt.  However, it shows the application name as [...].tmp which is not friendly.  Any idea how to specify the application/assembly name?  The <assemblyIdentity> element doesn't seem to have any effect.