Task.Run
'System.Threading.Tasks.Task' does not contain a definition for 'Run' Cannot find all types required by the 'async' modifier. Are you targeting the wrong framework version, or missing a reference to an assembly
public class MyClass { public int id { get; set; } public int State { get; set; } // 0 New, 1 Not Finish, 2 Finish public double GetValue(long i) { return 0; } public MyClass(int num) { id = num; State = 0; } public void RealRun() { Task.Run(() => ARun()); } async public void ARun() { ProcessStartInfo start = new ProcessStartInfo(); start.Arguments = ""; start.FileName = "portia.exe"; start.WindowStyle = ProcessWindowStyle.Hidden; start.WorkingDirectory = @"D: ...

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