Fix: Fixed possible null exception with renaming items (#13649)

Author: yaira2

src/Files.App/Views/LayoutModes/ColumnViewBase.xaml.cs

@@ -180,8 +180,13 @@ protected override void EndRename(TextBox textBox)
 				textBlock!.Visibility = Visibility.Visible;
 			}
 
-			textBox!.LostFocus -= RenameTextBox_LostFocus;
-			textBox.KeyDown -= RenameTextBox_KeyDown;
+			// Unsubscribe from events
+			if (textBox is not null)
+			{
+				textBox!.LostFocus -= RenameTextBox_LostFocus;
+				textBox.KeyDown -= RenameTextBox_KeyDown;
+			}
+
 			FileNameTeachingTip.IsOpen = false;
 			IsRenamingItem = false;
 		}

src/Files.App/Views/LayoutModes/DetailsLayoutBrowser.xaml.cs

@@ -311,8 +311,13 @@ protected override void EndRename(TextBox textBox)
 				textBlock!.Visibility = Visibility.Visible;
 			}
 
-			textBox!.LostFocus -= RenameTextBox_LostFocus;
-			textBox.KeyDown -= RenameTextBox_KeyDown;
+			// Unsubscribe from events
+			if (textBox is not null)
+			{
+				textBox!.LostFocus -= RenameTextBox_LostFocus;
+				textBox.KeyDown -= RenameTextBox_KeyDown;
+			}
+
 			FileNameTeachingTip.IsOpen = false;
 			IsRenamingItem = false;
 

src/Files.App/Views/LayoutModes/GridViewBrowser.xaml.cs

@@ -250,8 +250,13 @@ protected override void EndRename(TextBox textBox)
 				textBlock!.Visibility = Visibility.Visible;
 			}
 
-			textBox!.LostFocus -= RenameTextBox_LostFocus;
-			textBox.KeyDown -= RenameTextBox_KeyDown;
+			// Unsubscribe from events
+			if (textBox is not null)
+			{
+				textBox!.LostFocus -= RenameTextBox_LostFocus;
+				textBox.KeyDown -= RenameTextBox_KeyDown;
+			}
+
 			FileNameTeachingTip.IsOpen = false;
 			IsRenamingItem = false;