Microsoft.VisualStudio.Project.SolutionListenerForBuildDependencyUpdate.GetListOfProjectContainerNodes C# (CSharp) Method

        protected virtual List<IBuildDependencyOnProjectContainer> GetListOfProjectContainerNodes()
        {
            List<IBuildDependencyOnProjectContainer> projectList = new List<IBuildDependencyOnProjectContainer>();

            Debug.Assert(this.Solution != null, "IVsSolution object not set on this object");
            if(this.Solution == null)
            {
                // Bad state, so we quit
                return projectList;
            }

            // Enum projects loaded in the solution (normal projects only)
            IEnumHierarchies enumHierarchies = null;
            Guid guid = Guid.Empty;
            __VSENUMPROJFLAGS flags = __VSENUMPROJFLAGS.EPF_LOADEDINSOLUTION;
            ErrorHandler.ThrowOnFailure(this.Solution.GetProjectEnum((uint)flags, ref guid, out enumHierarchies));

            if(enumHierarchies != null)
            {
                // Loop projects found
                IVsHierarchy[] hierarchy = new IVsHierarchy[1];
                uint fetched = 0;
                while(enumHierarchies.Next(1, hierarchy, out fetched) == VSConstants.S_OK && fetched == 1)
                {
                    // If this is a ProjectContainerNode then add to list
                    IBuildDependencyOnProjectContainer projectNode = hierarchy[0] as IBuildDependencyOnProjectContainer;
                    if(projectNode != null)
                    {
                        projectList.Add(projectNode);
                    }
                }
            }

            return projectList;
        }