How to Run a .NET Process as a Different User?

Running a .NET Process with Different User Credentials

This article addresses the common issue of needing administrative privileges to start a process in .NET. The solution presented utilizes impersonation to execute the process under a user account with the required permissions.

The following code snippet demonstrates how to achieve this using an ImpersonationHelper class (not shown, but assumed to handle the necessary impersonation logic):

<code class="language-csharp">System.Diagnostics.Process proc = new System.Diagnostics.Process();
System.Security.SecureString ssPwd = new System.Security.SecureString();
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.FileName = "filename";
proc.StartInfo.Arguments = "args...";
proc.StartInfo.Domain = "domainname";
proc.StartInfo.UserName = "username";
string password = "user entered password";
foreach (char c in password)
{
    ssPwd.AppendChar(c);
}
ssPwd.MakeReadOnly(); //Important security step
proc.StartInfo.Password = ssPwd;
proc.Start();</code>

This code initiates a process using specified credentials. Crucially, the password is handled securely using SecureString. Remember to implement appropriate error handling and dispose of the SecureString properly after use. This method provides a secure way to run processes with elevated privileges by leveraging user impersonation.

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