Microsoft.VisualStudio.Project.FileNode.ExecCommandOnNode C# (CSharp) Method

        protected override int ExecCommandOnNode(Guid cmdGroup, uint cmd, OLECMDEXECOPT nCmdexecopt, IntPtr pvaIn, IntPtr pvaOut)
        {
            if(this.ProjectManager == null || this.ProjectManager.IsClosed)
            {
                return (int)OleConstants.OLECMDERR_E_NOTSUPPORTED;
            }

            // Exec on special filenode commands
            if(cmdGroup == VsMenus.guidStandardCommandSet97)
            {
                IVsWindowFrame windowFrame = null;

                switch((VsCommands)cmd)
                {
                    case VsCommands.ViewCode:
                        return ((FileDocumentManager)this.GetDocumentManager()).Open(false, false, VSConstants.LOGVIEWID_Code, out windowFrame, WindowFrameShowAction.Show);

                    case VsCommands.ViewForm:
                        return ((FileDocumentManager)this.GetDocumentManager()).Open(false, false, VSConstants.LOGVIEWID_Designer, out windowFrame, WindowFrameShowAction.Show);

                    case VsCommands.Open:
                        return ((FileDocumentManager)this.GetDocumentManager()).Open(false, false, WindowFrameShowAction.Show);

                    case VsCommands.OpenWith:
                        return ((FileDocumentManager)this.GetDocumentManager()).Open(false, true, VSConstants.LOGVIEWID_UserChooseView, out windowFrame, WindowFrameShowAction.Show);
                }
            }

            // Exec on special filenode commands
            if(cmdGroup == VsMenus.guidStandardCommandSet2K)
            {
                switch((VsCommands2K)cmd)
                {
                    case VsCommands2K.INCLUDEINPROJECT:
                        return ((IProjectSourceNode)this).IncludeInProject();

                    case VsCommands2K.EXCLUDEFROMPROJECT:
                        return ((IProjectSourceNode)this).ExcludeFromProject();

                    case VsCommands2K.RUNCUSTOMTOOL:
                        {
                            try
                            {
                                this.RunGenerator();
                                return VSConstants.S_OK;
                            }
                            catch(Exception e)
                            {
                                Trace.WriteLine("Running Custom Tool failed : " + e.Message);
                                throw;
                            }
                        }
                }
            }

            return base.ExecCommandOnNode(cmdGroup, cmd, nCmdexecopt, pvaIn, pvaOut);
        }