public string InsertAssignedCourse(AssignCourse assignCourse) { string message = "Course Assign Faield"; bool isCode = assignCourseGateway.IsCourseCodeExist(assignCourse); if (isCode) { message = "Course is Already Assigned"; return(message); } else { int isSaved = assignCourseGateway.InsertCourseAssignInfo(assignCourse); if (isSaved > 0) { message = "Course Assigned Successful"; } return(message); } }