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POWindows Phone 7 - Image Color Overlay from URL
 

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  1. POWindows Phone 7 - Image Color Overlay from URL
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    <p>In my Windows Phone 7.1 App, I have a fully functioning <code>ListBox</code> which displays data from a web service. In the <code>ListBox</code> I was able to put an image and bind the image source to a value returned from the web service using the following <code>xaml</code>:</p> <pre><code>&lt;Image Source="{Binding WebImageUrl}" Width="60" Height="60" /&gt; </code></pre> <p>This works great. But now I am trying to overlay the image with another color, and to do that I am following the SO question posted <a href="https://stackoverflow.com/questions/3950750/how-can-i-change-the-color-of-an-image-in-silverlight-wp7-color-mask">here</a>. This also works great IF the image explicitly stated. And it does NOT work if I try to bind the url.</p> <p>For instance, the code:</p> <pre><code>&lt;Rectangle Fill="Red" Width="60" Height="60"&gt; &lt;Rectangle.OpacityMask&gt; &lt;ImageBrush ImageSource="http://someurl.com/repository/images/icon100.png"/&gt; &lt;/Rectangle.OpacityMask&gt; &lt;/Rectangle&gt; </code></pre> <p>works. BUT, the code:</p> <pre><code>&lt;Rectangle Fill="Red" Width="60" Height="60"&gt; &lt;Rectangle.OpacityMask&gt; &lt;ImageBrush ImageSource="{Binding WebImageUrl}"/&gt; &lt;/Rectangle.OpacityMask&gt; &lt;/Rectangle&gt; </code></pre> <p>does not. The code compiles file, but Visual Studio throws a parsing error.</p> <p><strong>Is there any way to have ImageBrush.ImageSource bind to a string???</strong></p> <p>Any thoughts would be much appreciated. I've been at this for a while to no luck.</p> <p>Cheers, Brett</p>
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    1. COHave you tested listbox with multiple images on the actual phone? Binding url directly is a bad idea with many images. UI freezes to download the data.
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    2. CO@lukas: I do have it working with the images downloading. I do everything on a background thread, then bind the listbox upon finishing the downloads. The hardcoded URLis just an example which I know works. My question is really about the color overlay. Why does a hardcoded url work but a binding does not?
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      1. USBrett
 

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