private void Course_Savebutton1_Click(object sender, EventArgs e) { Course aCourse = new Course(); aCourse.CourseID = COURSE_CourseIDtextBox1.Text; aCourse.CourseTitles = COURSE_CourseTitletextBox2.Text; aCourse.Section = COURSE_SectiontextBox3.Text; aCourse.Semister = COURSE_SemistercomboBox1.Text; CourseBLL aCourseBLL = new CourseBLL(); bool res = aCourseBLL.SAVECourseBLL(aCourse); if (res) { MessageBox.Show("Course Save Successfully!!!"); clearCourseTextBoxes(); LoadCoursesDataGridView(); } else { MessageBox.Show("Error!"); } }