C# Get Administrator Rights For A Single Method

Question

I have a Method/Event Form1_Load and i want to give it Administrator Rights

Because in that Method/Event i associate my program with my extension , Also don't want to start application as administrator , If i do that program will not work correcly

So i have a code :

[PrincipalPermission(SecurityAction.Demand, Role = @"BUILTIN\Administrators")]

private void Form1_Load(object sender, EventArgs e)
{
...
}

But not works And my application gives error :

UnauthorizedAccessException

How can i fix this ?

Answer 1

"associate my program with my extension": your design is wrong. That association is done when your program gets installed. And there it is no problem at all: the installer is running elevated.

Answer 2

You won't like this answer, but you can't elevate the user for one method, instead you need to request elevation for the entire application, when it loads.

Please see https://msdn.microsoft.com/en-us/library/bb756929.aspx?f=255&MSPPError=-2147217396 for how to do that.

This is also helpful https://code.msdn.microsoft.com/windowsapps/CSUACSelfElevation-644673d3

EDIT:

If you have one task to do, like associating an extension, then you can write the logic for that in a separate EXE that only does that task. Then you can launch that EXE from your main program with

 System.Diagnostics.Process.Start("<path to exe>");

Provided you have followed the advice in the link above, your EXE will run and request elevation, and should be able to do what you need.