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POstrange issue when using XamlReader to load xaml with xml:space="preserve"
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  1. POstrange issue when using XamlReader to load xaml with xml:space="preserve"
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    copied!<p>I found a very strange issue when to use XamlReader to load the menu of my app from a predefined xaml file. I need to define the attribute of <code>xml:space="preserve"</code> and the xaml is like this: </p> <pre><code>&lt;m:MenuManager&gt; ... &lt;m:Resource&gt; &lt;m:Resource.ResourceTitle&gt; &lt;sys:String xml:space="preserve"&gt;Click the Button&amp;#xA;(InvokeCommandAction)&amp;#xA;View&lt;/sys:String&gt; &lt;/m:Resource.ResourceTitle&gt; &lt;/m:Resource&gt; ... &lt;/m:MenuManager&gt; </code></pre> <p>Load the xaml content to the string and use <code>XamlReader.Load</code> to convert it to the MenuManager object. When at the first time the <code>XamlReader.Load</code> method is called, it will only return the words within the tag <code>&lt;sys:String xml:space="preserve"&gt;</code> , and the expected result only returned at the second time. </p> <pre><code> var uri = new Uri("/Sample;component/Assets/Menu.xaml", UriKind.Relative); var info = Application.GetResourceStream(uri); string xaml = null; using (StreamReader reader = new StreamReader(info.Stream)) { xaml = reader.ReadToEnd(); } //when the first time load, only a string value of //"Click the Button&amp;#xA;(InvokeCommandAction)&amp;#xA;View" is returned var temp1 = XamlReader.Load(xaml); //when the second time load, all menu content loaded successfully and //converted to the object of MenuManager readXaml = XamlReader.Load(xaml) as MenuManager; </code></pre> <p>When I remove the attribute <code>xml:space="preserve"</code> or change it to <code>xml:space="default"</code> it will work fine and I can get the object of MenuManager by calling the method <code>XamlReader.Load</code> only once.But I really need keep the whitespace on my page, and the code here looks so strange. Can anybody please explain this? Thanks!</p>
 

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