How to start a Process as administrator mode in C# [duplicate]

Question

I have a Visual Studio Windows app project. I've added code to download an installer update file. The installer after it has finished downloading would need administrator privileges to run. I have added a manifest file.

When user clicks on the DownloadUpdate.exe, UAC prompts the user for Admin permissions. So I assumed that all processes created and called within DownloadUpdate.exe will run in admin capacity. So I made the setup call my downloaded file with the following code:

Process p = new Process(); p.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; p.StartInfo.FileName = strFile; p.StartInfo.UseShellExecute = false; p.StartInfo.RedirectStandardOutput = true; p.StartInfo.RedirectStandardError = true; 

Answer 1

Try this:

//Vista or higher check if (System.Environment.OSVersion.Version.Major >= 6) {    p.StartInfo.Verb = "runas"; } 

Alternatively, go the manifest route for your application.

Answer 2

First of all you need to include in your project

using System.Diagnostics; 

After that you could write a general method that you could use for different .exe files that you want to use. It would be like below:

public void ExecuteAsAdmin(string fileName) {     Process proc = new Process();     proc.StartInfo.FileName = fileName;     proc.StartInfo.UseShellExecute = true;     proc.StartInfo.Verb = "runas";     proc.Start(); } 

If you want to for example execute notepad.exe then all you do is you call this method:

ExecuteAsAdmin("notepad.exe");