public void RemoveGeneratedItemCustomMetadata(IVsProject project, List <string> paths)
        {
#if VS2017 || VS2019
            var projectDir = project.GetProjectBaseDirectory();
            project.UpdateProject((MSProject msproject) =>
            {
                var items = msproject.Xml.Items.Where(item =>
                {
                    if (item.ItemType.Equals("Compile") || item.ItemType.Equals("ClCompile") || item.ItemType.Equals("ClInclude"))
                    {
                        return(paths.Contains(Path.Combine(projectDir, item.Update)));
                    }
                    else
                    {
                        return(false);
                    }
                });

                foreach (var item in items)
                {
                    item.Parent.RemoveChild(item);
                }
            });
#endif
        }
        public void AddFromFile(IVsProject project, string file)
        {
#if VS2017 || VS2019
            if (project.IsCppProject() || GetUnconfiguredProject(project) == null)
            {
                project.GetDTEProject().ProjectItems.AddFromFile(file);
            }
            else
            {
                project.UpdateProject((MSProject msproject) =>
                {
                    if (Path.GetExtension(file).Equals(".cs", StringComparison.CurrentCultureIgnoreCase))
                    {
                        var path  = FileUtil.RelativePath(Path.GetDirectoryName(msproject.FullPath), file);
                        var items = msproject.GetItemsByEvaluatedInclude(path);
                        if (items.Count == 0)
                        {
                            msproject.AddItem("Compile", path);
                        }
                    }
                });
            }
#else
            project.GetDTEProject().ProjectItems.AddFromFile(file);
#endif
        }
        public void SetGeneratedItemCustomMetadata(IVsProject project, string slice, string generated,
                                                   List <string> excludedConfigurations = null)
        {
            project.UpdateProject((MSProject msproject) =>
            {
                var item = msproject.AllEvaluatedItems.FirstOrDefault(i => generated.Equals(i.EvaluatedInclude));
                if (item != null)
                {
                    var element = item.Xml;
                    if (excludedConfigurations != null)
                    {
                        foreach (var conf in excludedConfigurations)
                        {
                            var metadata       = element.AddMetadata("ExcludedFromBuild", "true");
                            metadata.Condition = string.Format("'$(Configuration)|$(Platform)'=='{0}'", conf);
                        }
                    }
                    //
                    // Only set SliceCompileSource if the item doesn't originate
                    // from a glob expression
                    //
                    if (item.EvaluatedInclude.Equals(item.UnevaluatedInclude))
                    {
                        item.SetMetadataValue("SliceCompileSource", slice);
                    }
#if VS2017 || VS2019
                    //
                    // With Visual Studio 2017 if the item originate from a glob we
                    // update the item medata using the Update attribute
                    //
                    else
                    {
                        var updateItem = msproject.Xml.Items.FirstOrDefault(i => generated.Equals(i.Update));
                        if (updateItem == null)
                        {
                            updateItem = msproject.Xml.CreateItemElement(item.ItemType);
                            var group  = msproject.Xml.ItemGroups.FirstOrDefault();
                            if (group == null)
                            {
                                group = msproject.Xml.AddItemGroup();
                            }
                            updateItem.Update = generated;
                            group.AppendChild(updateItem);
                        }
                        var metadata = updateItem.Metadata.FirstOrDefault(m => m.Name.Equals("SliceCompileSource"));
                        if (metadata != null)
                        {
                            metadata.Value = slice;
                        }
                        else
                        {
                            updateItem.AddMetadata("SliceCompileSource", slice);
                        }
                    }
#endif
                }
            });
        }
        public void RemoveGeneratedItemDuplicates(IVsProject project)
        {
#if VS2017 || VS2019
            //
            // With .NET Core project system when default compile items is enabled we
            // can end up with duplicate generated items, as the call to AddItem doesn't
            // detect that the new create file is already part of a glob and adds a
            // second item with the given include.
            //
            if (!project.IsCppProject() && GetUnconfiguredProject(project) != null)
            {
                project.UpdateProject((MSProject msproject) =>
                {
                    var all = msproject.Xml.Items.Where(item => item.ItemType.Equals("Compile"));

                    foreach (var item in all)
                    {
                        //
                        // If there is a glob item that already match the evaluated include path we
                        // can remove the non glob item as it is a duplicate
                        //
                        var globItem = msproject.AllEvaluatedItems.FirstOrDefault(i =>
                        {
                            return(i.HasMetadata("SliceCompileSource") &&
                                   !i.EvaluatedInclude.Equals(i.UnevaluatedInclude) &&
                                   i.EvaluatedInclude.Equals(item.Include));
                        });
                        if (globItem != null)
                        {
                            item.Parent.RemoveChild(item);
                        }
                    }
                });
            }
#endif
        }