Andy De George
da363692ff
* Reset branch for WPF changes * Convert BMP to PNG; fix link-out-of-scope err * Add snippets for WPF... 6794 files!!!! * Add missing snippets * update file updated between migration * Fix paths to include * update breadcrumb and toc * fix index links * fix index links * fix index links * fix markdown
1.9 KiB
title, ms.date, dev_langs, helpviewer_keywords, ms.assetid
| title | ms.date | dev_langs | helpviewer_keywords | ms.assetid | |||
|---|---|---|---|---|---|---|---|
| How to: Make a Freezable Read-Only | 03/30/2017 |
|
|
6c544b7d-d3c9-4736-aa90-4b8728234ccb |
How to: Make a Freezable Read-Only
This example shows how to make a xref:System.Windows.Freezable read-only by calling its xref:System.Windows.Freezable.Freeze%2A method.
You cannot freeze a xref:System.Windows.Freezable object if any one of the following conditions is true about the object:
-
It has animated or data bound properties.
-
It has properties that are set by a dynamic resource. For more information about dynamic resources, see the XAML Resources.
-
It contains xref:System.Windows.Freezable sub-objects that cannot be frozen.
If these conditions are false for your xref:System.Windows.Freezable object and you do not intend to modify it, consider freezing it to gain performance benefits.
Example
The following example freezes a xref:System.Windows.Media.SolidColorBrush, which is a type of xref:System.Windows.Freezable object.
[!code-csharpfreezablesample_procedural#FreezeExample1] [!code-vbfreezablesample_procedural#FreezeExample1]
For more information about xref:System.Windows.Freezable objects, see the Freezable Objects Overview.