Override function SelectInternal in file PropertyGridView.GridViewTextBox.cs

Author: LeafShi1

src/System.Windows.Forms/src/System/Windows/Forms/Controls/PropertyGrid/PropertyGridInternal/PropertyGridView.GridViewTextBox.cs

@@ -306,6 +306,15 @@ private unsafe bool WmNotify(ref Message m)
             return false;
         }
 
+        private protected override void SelectInternal(int start, int length, int textLen)
+        {
+            base.SelectInternal(start, length, textLen);
+            if (IsAccessibilityObjectCreated)
+            {
+                AccessibilityObject.RaiseAutomationEvent(UIA_EVENT_ID.UIA_AutomationFocusChangedEventId);
+            }
+        }
+
         protected override void WndProc(ref Message m)
         {
             if (_filter && PropertyGridView.FilterEditWndProc(ref m))

src/System.Windows.Forms/src/System/Windows/Forms/Controls/PropertyGrid/PropertyGridInternal/PropertyGridView.cs

@@ -3997,7 +3997,7 @@ private void Refresh(bool fullRefresh, int startRow, int endRow)
             startRow = 0;
         }
 
-        if (OwnerGrid.HavePropertyEntriesChanged())
+        if (fullRefresh || OwnerGrid.HavePropertyEntriesChanged())
         {
             if (HasEntries && !InPropertySet && !CommitEditTextBox())
             {