با کد زیر میتونید روز رو بدست بیارید و بعد با یک Switch به عملیات مورد نظر را روی روز انجام دهید

PersianCalendar pc=new PersianCalendar();
           DateTime dt = Convert.ToDateTime("1395/06/01");
           string day = pc.GetDayOfWeek(dt).ToString();

Dictionary<string, string[]> DayOfWeeks = new Dictionary<string, string[]>();
DayOfWeeks.Add("en", new string[] {"Saturday","Sunday","Monday","Tuesday","Thursday"  ,"Wednesday","Friday"});
DayOfWeeks.Add("fa", new string[] {"شنبه","یک شنبه","دو شنبه","سه شنبه","چهار شنبه","پنج شنبه","جمعه"});

DayOfWeek a = DayOfWeek.Monday;
string Text = DayOfWeeks[en][(int)a]