Escape ampersand while executing the script

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WPF

PowerShell

I am trying to execute the PowerShell from WPF by pointing to the powershell.exe path. I have the following code
The error I am getting is The ampersand (&) character is not allowed. The & operator is reserved for future use; wrap an ampersand in double quotation marks ("&") to pass it as part of a string.

For Love of Software: Calling a PowerShell script in a path with a white space from command line[^]

My script looks as follows

C:\WINDOWS\system32\WindowsPowerShell\v1.0\powershell.exe -ExecutionPolicy Unrestricted -Command "& 'c:\Test PS\Palindrome.ps1' -param Hello"

which is executing fine when I directly copy paste into PowerShell, but not from the Win froms application

Code for the same

ConsoleApplication2.rar - Google Drive[^]

What I have tried:

ProcessStartInfo proc = new ProcessStartInfo();
           string PSPath = string.Concat(Environment.SystemDirectory, "\\WindowsPowerShell\\v1.0\\powershell.exe");
           proc.FileName = PSPath;
           string DirectoryPath = System.IO.Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);
           string script1 = string.Concat(DirectoryPath, "\\Palindrome.ps1 -param Hello");
           var match1 = Regex.Split(script1, @"(?<=\.ps1)\s+");
           string newfile1 = string.Concat("\"& '" + match1[0] + "'", " ", match1[1], "\"");
           string ScriptPath = string.Concat(PSPath, " -ExecutionPolicy Unrestricted -Command ");
           ScriptPath = string.Concat(ScriptPath, newfile1);

           //ScriptPath = string.Concat(ScriptPath, script);
           proc.Arguments = ScriptPath;
           using (Process p = new Process())
           {
               proc.Verb = "runas";
               proc.UseShellExecute = false;
               proc.RedirectStandardError = true;
               p.StartInfo = proc;
               p.Start();
               StreamReader myStreamReader = p.StandardError;
               p.WaitForExit();
               if (p.ExitCode != 0)
               {
                   MessageBox.Show(myStreamReader.ReadToEnd());
               }
           }