how to show panel in textchange event of user control

Question

hi,

 i have one user control i need to show one panel inside gridview ,when cursor goes to textbox .for that i used text change event of textbox.

i am trying to following code

 

private void textBox2_TextChanged(object sender, EventArgs e)

{

panel1.Visible=true;

panel1.Location=new Point (20,20);

panel1.Controls.Add(dataGridView1);

}

 

 

but it is not shown panel.