private void btnSave_Click(object sender, EventArgs e)
{
if (txtName.Text.Trim().Length < 3)
{
MessageBox.Show("Student name is empty ( > 3 ).");
return;
}
if (txtReg.Text.Trim().Length < 1)
{
MessageBox.Show("Student reg is empty ( > 1 ).");
return;
}
if (txtClass.Text.Trim().Length == 0)
{
MessageBox.Show("Student class is empty ( > 1 ).");
return;
}
if (txtSection.Text.Trim().Length == 0)
{
MessageBox.Show("Student section is empty ( > 1 ).");
return;
}
if (btnSave.Text == "Save")
{
Student std = new Student(txtName.Text.Trim(), txtReg.Text.Trim(), txtClass.Text.Trim(), txtSection.Text.Trim());
DbStudent.AddStudent(std);
Clear();
}
_parent.Display();
}
public void Display()
{
DbStudent.DisplayAndSearch("SELECT ID, Name, Reg, Class, Section FROM student_table", dataGridView);
}