How to call to powershell script from C# windows programe?

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C#

I have powershell script in my d drive and i need to execute it from c# windows programe .I tried below but not .success

What I have tried:

tring filepath = "D:\\JournalImport";
                String cmd = "-Command ";
                System.Diagnostics.Process process = new System.Diagnostics.Process();
              
                process.StartInfo.FileName = "D:\\JournalImport\\JrnlImport.ps1";
                
                process.StartInfo.WorkingDirectory = filepath;
                process.StartInfo.Arguments = cmd;
                process.Start();
                process.WaitForExit(15000000);
                process.Close();