fixes bugs

4 years ago · 7e6edb0f32
1 changed files with 2 additions and 2 deletions
--- a/src/Avalonia.Controls/ComboBox.cs
+++ b/src/Avalonia.Controls/ComboBox.cs
@ -403,8 +403,8 @@ namespace Avalonia.Controls
                {
                    control.Measure(Size.Infinity);

-                    var flowDirection = control.IsAttachedToVisualTree ? 
-                        (control.VisualParent as Control)!.FlowDirection : FlowDirection.LeftToRight;
+                    var flowDirection = 
+                        (control.VisualParent as Control)?.FlowDirection ?? FlowDirection.LeftToRight;

                    SelectionBoxItem = new Rectangle
                    {