private Boolean checkTaskID() { Boolean getID = false; if (taskID.Text == "") { MessageBox.Show("Please choose one task to delete!"); } else { TaskManagement taskMgt = new TaskManagement(); Int32 getResult = taskMgt.GetTasksByTaskID(Int32.Parse(taskID.Text.Trim())).Count(); if (getResult > 0) { getID = true; } } return(getID); }