Microsoft.VisualStudio.Project.DataObject.SetData C# (CSharp) Method

        public void SetData(FORMATETC format, SafeGlobalAllocHandle data)
        {
            this.entries.Add(new DataCacheEntry(format, data, DATADIR.DATADIR_SET));
        }

        /// <summary>
        /// Returns a dataobject from selected nodes
        /// </summary>
        /// <param name="cutHighlightItems">boolean that defines if the selected items must be cut</param>
        /// <returns>data object for selected items</returns>
        internal virtual DataObject PackageSelectionDataObject(bool cutHighlightItems)
        {
            this.CleanupSelectionDataObject(false, false, false);
            StringBuilder sb = new StringBuilder();

            DataObject dataObject = null;

            try
            {
                IList<HierarchyNode> selectedNodes = this.GetSelectedNodes();
                if(selectedNodes != null)
                {
                    this.InstantiateItemsDraggedOrCutOrCopiedList();

                    StringBuilder selectionContent = null;

                    // If there is a selection package the data
                    if(selectedNodes.Count > 1)
                    {
                        foreach(HierarchyNode node in selectedNodes)
                        {
                            selectionContent = node.PrepareSelectedNodesForClipBoard();
                            if(selectionContent != null)
                            {
                                sb.Append(selectionContent);
                            }
                        }
                    }
                    else if(selectedNodes.Count == 1)
                    {
                        HierarchyNode selectedNode = selectedNodes[0];
                        selectionContent = selectedNode.PrepareSelectedNodesForClipBoard();
                        if(selectionContent != null)
                        {
                            sb.Append(selectionContent);
                        }
                    }
                }

                // Add the project items first.
                IntPtr ptrToItems = this.PackageSelectionData(sb, false);
                if(ptrToItems == IntPtr.Zero)
                {
                    return null;
                }

                FORMATETC fmt = DragDropHelper.CreateFormatEtc(DragDropHelper.CF_VSSTGPROJECTITEMS);
                dataObject = new DataObject();
                dataObject.SetData(fmt, ptrToItems);

                // Now add the project path that sourced data. We just write the project file path.
                IntPtr ptrToProjectPath = this.PackageSelectionData(new StringBuilder(this.GetMkDocument()), true);

                if(ptrToProjectPath != IntPtr.Zero)
                {
                    dataObject.SetData(DragDropHelper.CreateFormatEtc(DragDropHelper.CF_VSPROJECTCLIPDESCRIPTOR), ptrToProjectPath);
                }

                if (cutHighlightItems)
                {
                    bool first = true;
                    IVsUIHierarchyWindow w = UIHierarchyUtilities.GetUIHierarchyWindow(this.site, HierarchyNode.SolutionExplorer);

                    // This happens in the context of cutting multiple items from the project.
                    // Since we are already in solution explorer, it is extremely unlikely that we get a null return.
                    // If we do, the icons for the cut items will not fade.  The cut operation will still succeed.
                    if (w != null)
                    {
                        foreach (HierarchyNode node in this.ItemsDraggedOrCutOrCopied)
                        {
                            ErrorHandler.ThrowOnFailure(w.ExpandItem(this.InteropSafeIVsUIHierarchy, node.ID, first ? EXPANDFLAGS.EXPF_CutHighlightItem : EXPANDFLAGS.EXPF_AddCutHighlightItem));
                            first = false;
                        }
                    }
                }
            }
            catch(COMException e)
            {
                Trace.WriteLine("Exception : " + e.Message);

                dataObject = null;
            }

            return dataObject;
        }