Filters applied to the object explorer now show the child nodes of an…

…y nodes that match the filter (I.E. Tables that match will show their columns.)

Databvase-Winforms/Modules/ObjectExplorer.cs

@@ -15,7 +15,9 @@
 using DevExpress.XtraEditors;
 using DevExpress.XtraSplashScreen;
 using DevExpress.XtraTreeList;
+using DevExpress.XtraTreeList.Columns;
 using DevExpress.XtraTreeList.Nodes;
+using DevExpress.XtraTreeList.Nodes.Operations;
 using Microsoft.SqlServer.Management.Smo;
 
 namespace Databvase_Winforms.Modules
@@ -41,8 +43,10 @@ private void HookupEvents()
             treeListObjExp.PopupMenuShowing += TreeListObjectExplorerOnPopupMenuShowing;
             treeListObjExp.MouseDown += TreeListObjExpOnMouseDown;
             treeListObjExp.NodeChanged += TreeListObjExpOnNodeChanged;
+            treeListObjExp.CustomRowFilter += TreeListObjExpOnCustomRowFilter;
         }
 
+
         private void RegisterServices()
         {
             mvvmContextObjectExplorer.RegisterService(new BackupViewService());
@@ -113,6 +117,22 @@ private static void SetHasChildrenForNode(NodeChangedEventArgs e, ObjectExplorer
             }
         }
 
+        /// <summary>
+        /// Used to apply custom filter logic. For Databvase's object explorer, this is used to show the child nodes of anything that
+        /// matches the filter criteria.
+        /// Source: https://www.devexpress.com/Support/Center/Question/Details/T528434/treelist-how-to-show-child-nodes-if-their-parent-node-satisfies-the-currently-applied
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void TreeListObjExpOnCustomRowFilter(object sender, CustomRowFilterEventArgs e)
+        {
+            if (e.Node.ParentNode != null && e.Node.ParentNode.Visible)
+            {
+                e.Node.Visible = true;
+                e.Handled = true;
+            }
+        }
+
         #endregion