Microsoft.VisualStudio.Project.ConfigProvider.ClonePropertyGroup C# (CSharp) Method

        protected virtual ProjectPropertyGroupElement ClonePropertyGroup(MSBuild.Project project, ProjectPropertyGroupElement group)
        {
            if (project == null)
                throw new ArgumentNullException("project");
            if (group == null)
                throw new ArgumentNullException("group");

            // Create a new (empty) PropertyGroup
            ProjectPropertyGroupElement newPropertyGroup = project.Xml.CreatePropertyGroupElement();
            project.Xml.InsertAfterChild(newPropertyGroup, group);

            // Now copy everything from the group we are trying to clone to the group we are creating
            if (!String.IsNullOrEmpty(group.Condition))
                newPropertyGroup.Condition = group.Condition;

            foreach (ProjectPropertyElement prop in group.Properties)
            {
                ProjectPropertyElement newProperty = newPropertyGroup.AddProperty(prop.Name, prop.Value);
                if (!String.IsNullOrEmpty(prop.Condition))
                    newProperty.Condition = prop.Condition;
            }

            return newPropertyGroup;
        }