Unable to show and hide the panel

See more:

WinForms

menu

C#6.0

I have created a panel in which I have several buttons.For ex:`btnProduct`,`btnSale`. I have two another panels for example `productSubMenuPanel` and `salesSubMenuPanel`.

When mouse hover over the `btnProduct` it should make visible the `productSubMenuPanel` and it (`productSubMenuPanel`) should not hide until the user click on any buttons present in `productSubMenuPanel`. After clicking the button present inside `productSubMenuPanel` then `productSubMenuPane` should be hided.

When mouse leaves the `btnProduct` then `productSubMenuPanel` should be hided. Similarly, when mouse leaves the `productSubMenuPanel` without clicking any button present inside this panel then `productSubMenuPanel` should be hided.

What I have tried:

private void btnProduct_MouseEnter(object sender, EventArgs e)
       {
           productSubMenuPanel.Visible = true;
       }

       private void btnProduct_MouseLeave(object sender, EventArgs e)
       {
           productSubMenuPanel.Visible = false;
       }

       private void productSubMenuPanel_MouseEnter(object sender, EventArgs e)
       {
           productSubMenuPanel.Visible = true;

       }

       private void productSubMenuPanel_MouseLeave(object sender, EventArgs e)
       {
          productSubMenuPanel.Visible = false;

       }

       private void btnSale_MouseEnter(object sender, EventArgs e)
       {
           salesSubmenuPanel.Visible = true;
       }

       private void btnSale_MouseLeave(object sender, EventArgs e)
       {
           salesSubmenuPanel.Visible = false;
       }

       private void salesSubmenuPanel_MouseEnter(object sender, EventArgs e)
       {
           salesSubmenuPanel.Visible = true;
       }
       private void salesSubmenuPanel_MouseLeave(object sender, EventArgs e)
       {
           salesSubmenuPanel.Visible = false;
       }