private void studentsRecordsToolStripMenuItem_Click(object sender, EventArgs e)
{
frmStudentDataGridView obj = new frmStudentDataGridView();
obj.Show();
obj.MdiParent = this;
}
private void btnGetData_Click(object sender, EventArgs e)
{
frmStudentDataGridView obj = new frmStudentDataGridView();
this.Hide();
// obj.MdiParent = this;
obj.Show();
}