/// <summary> /// validate the input of Carool /// </summary> /// <returns>true: valid input | false: invalid input</returns> private bool validation() { BulletedList_InfoFeedBack.Items.Clear(); if (!ValidationTools.chequeDestination(TextBox_Destination.Text)) { BulletedList_InfoFeedBack.Items.Add("Invalid Destination"); return(false); } if (!ValidationTools.chequeTime(TextBox_Hour.Text, TextBox_Minute.Text)) { BulletedList_InfoFeedBack.Items.Add("Invalid Time"); return(false); } if (!ValidationTools.chequeDescription(TextBox_Description.Text)) { BulletedList_InfoFeedBack.Items.Add("Invalid Description"); return(false); } return(true); }