private void button10_Click(object sender, EventArgs e)
{
CUSTOMER_DETAILS f = new CUSTOMER_DETAILS();
f.Show();
this.Hide();
}
private void customerRecordsToolStripMenuItem_Click(object sender, EventArgs e)
{
this.IsMdiContainer = true;
CUSTOMER_DETAILS f = new CUSTOMER_DETAILS();
f.MdiParent = this;
f.Show();
}