NetIde.Util.Forms.FolderBrowser.ShowVistaDialog C# (CSharp) Method

        private DialogResult ShowVistaDialog(IWin32Window owner)
        {
            var dialog = new NativeMethods.FileOpenDialog();

            try
            {
                SetDialogProperties(dialog);

                int result = dialog.Show(owner == null ? IntPtr.Zero : owner.Handle);

                if (result < 0)
                {
                    if ((uint)result == (uint)NativeMethods.HRESULT.ERROR_CANCELLED)
                        return DialogResult.Cancel;
                    else
                        throw Marshal.GetExceptionForHR(result);
                }

                GetResult(dialog);

                return DialogResult.OK;
            }
            finally
            {
                Marshal.FinalReleaseComObject(dialog);
            }
        }