Drop Shadow On A Borderless WinForm

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C#

WinForms

C#4.0

All,

I have created a form without borders, now I need to show borders or shadow on four sides of Form. I have used below code and getting shadow only for bottom and right side. I am not getting the shadow on top and left side of Form... Can you please provide me a solution...

protected override CreateParams CreateParams
       {
           get
           {
               const int CS_DROPSHADOW = 0x20000;
               CreateParams cp = base.CreateParams;
               cp.ClassStyle |= CS_DROPSHADOW;
               return cp;
           }
       }

Thanks in Advance...

Regards
Naveen