private void stAddButton_Click(object sender, EventArgs e) { addStudentObj = new AddStudentClass(); addStudentObj.StudentId = stIdTextBox.Text; addStudentObj.StudentName = stNameTextBox.Text; addStudentObj.StudentDept = stDeptComboBox.Text; addStudentObj.StudentYear = stYearComboBox.Text; addStudentObj.StudentSemester = stSemesterComboBox.Text; addStudentObj.StudentMobile = stMobileTextBox.Text; addStudentObj.StudentEmail = stEmailTextBox.Text; addStudentObj.StudentPassword = stPassTextBox.Text; if ((stIdTextBox.Text == "") || (stNameTextBox.Text == "") || (stDeptComboBox.Text == "") || (stYearComboBox.Text == "") || (stSemesterComboBox.Text == " ")) { MessageBox.Show("Please fill-up all field"); this.Update(); } else { ob = new Gateway(); if (ob.InserIntoStudentInfoTable(addStudentObj) == 1) { MessageBox.Show("Information Added Successfully!!!"); stResetButton_Click(sender, e); } else { MessageBox.Show("Already Added \"" + stNameTextBox.Text + "\""); } } }