private void Rollnobtn_Click(object sender, EventArgs e)
{
Searchstudent_info srchinfo = new Searchstudent_info(this);
srchinfo.ShowDialog();
if (Rollnotxtbox.Text == null)
{
MessageBox.Show("Enter your correct Roll Number");
}
}
private void regnobtn_Click(object sender, EventArgs e)
{
Searchstudent_info srchinfo = new Searchstudent_info(this);
srchinfo.ShowDialog();
}