System.Windows.Automation.CacheRequest.Activate C# (CSharp) Method

        public IDisposable Activate()
        {
            this.Push();
            return new CacheRequestActivation(this);
        }

        public void GridPatternCachedTest()
        {
            CacheRequest req = new CacheRequest();
            req.Add(GridItemPattern.Pattern);
            req.Add(GridPattern.Pattern);
            req.Add(GridPattern.RowCountProperty);
            req.Add(GridPattern.ColumnCountProperty);
            req.Add(GridItemPattern.RowProperty);
            req.Add(GridItemPattern.ColumnProperty);
            req.Add(GridItemPattern.ContainingGridProperty);

            using (req.Activate())
            {
                AutomationElement itemsView = ExplorerTargetTests.explorerHost.Element.FindFirst(TreeScope.Subtree,
                    new PropertyCondition(AutomationElement.ClassNameProperty, "UIItemsView"));
                Assert.IsNotNull(itemsView);

                // Try out the Grid Pattern
                GridPattern grid = (GridPattern)itemsView.GetCachedPattern(GridPattern.Pattern);
                Assert.IsTrue(grid.Cached.ColumnCount > 0);
                Assert.IsTrue(grid.Cached.RowCount > 0);

                // GridItem
                AutomationElement gridItemElement = grid.GetItem(0, 0);
                Assert.IsNotNull(gridItemElement);
                GridItemPattern gridItem = (GridItemPattern)gridItemElement.GetCachedPattern(GridItemPattern.Pattern);
                Assert.AreEqual(gridItem.Cached.Row, 0);
                Assert.AreEqual(gridItem.Cached.Column, 0);
                Assert.AreEqual(gridItem.Cached.ContainingGrid, itemsView);
            }
        }