showing and hiding a control on mouse over

[Raj Chudasama]

i have a custom control derived from usercontrol (called popupwin). I have
another usercontrol (called extensionbutton). In the extension button i
have declared a variable as follows:
private PopupWindow mUserPopWin;

i create a new instance of the popupwin and provide necessary vars.

this.mUserPopWin = new PopupWindow();

this.mUserPopWin.UserName = this.List.Name;

this.mUserPopWin.UserPhone = this.List.Number;

this.mUserPopWin.ImageUrl = this.List.Picture;

this.mUserPopWin.Visible = false;

now what i want to do is to make the popupwin visible when user mouse is
over the button.

private void ExtensionButton_MouseHover(object sender, System.EventArgs e)

{
ExtensionButton b = ((ExtensionButton)sender);

b.DisableTooltip();

Rectangle btnRect = b.RectangleToScreen(new Rectangle(b.Location,b.Size));

mUserPopWin.Location = btnRect.Location;

mUserPopWin.Visible = true;

mUserPopWin.BringToFront();

}

private void ExtensionButton_MouseLeave(object sender, System.EventArgs e)

{

ExtensionButton b = ((ExtensionButton)sender);

b.DisableTooltip();

mUserPopWin.Visible = false;

}

When i debug i see the code being executed but the window never popup
(becomes visible) what am i doing wrong?

thanks