//public String Lecture1, Lecture2, SubjectCode, SubjectName, GroupID, Tag, NoOfStudent, Duration; private void btnSave_Click(object sender, EventArgs e) { S.Lecture1 = cmbSelectLec.Text; S.Lecture2 = txtSelectLec.Text; S.SubjectCode = txtSubCode.Text; S.SubjectName = cmbSelectSubject.Text; S.GroupID = cmbSelectGroup.Text; S.Tag = cmbSelectTag.Text; S.NoOfStudent = txtNoStudent.Text; S.Duration = txtDuration.Text; //inserting Data into database using the method we created bool success = S.insertSession(S); if (success == true) { //successfully inserted MessageBox.Show("Successfully Inserted"); //call the method here Clear(); } else { //failed to add data MessageBox.Show("Failed to add Session details.Try Again"); } }