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POCreating a C# WPF Image Button with a template that I can alter in code dynamically
 

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  1. POCreating a C# WPF Image Button with a template that I can alter in code dynamically
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    <p>Hey, I was figuring out how to create an image button template in C# WPF, and I came upon <a href="https://stackoverflow.com/questions/1261908/wpf-how-to-create-image-button-with-template">this</a> . This seems really useful to me except for two problems:</p> <ol> <li>I want to be able to change the images dynamically in the C# codebehind, as this button will be using images that I am loading dynamically through XML documents.</li> <li><strong>FIXED</strong> I'm getting the error that "The name 'InitializeComponent' does not exist in the current context". Here is my code (note, I am not having a disabled image, only a pressed and a normal. the Normal.png and the other one are just placeholders.</li> </ol> <p>I was hoping to use this in a few places, but I can always create a few different versions. However, I need the images to load dynamically and I'm not able to find out how to make an image I specify in my C# codebehind basically act as a button. Thanks</p> <p><strong>NOTE: I'm able to get the button to work well, except for the changing the image source part. this code is what I have now.</strong></p> <pre><code> &lt;Button x:Class="CFYLauncher.PageNavButton" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt; &lt;Button.Template&gt; &lt;ControlTemplate TargetType="{x:Type Button}"&gt; &lt;Grid&gt; &lt;Image x:Name="NormalImg" Source="\img\btn_arrow.png"/&gt; &lt;Image x:Name="PressedImg" Source="\img\btn_arrow_selected.png" Visibility="Hidden"/&gt; &lt;/Grid&gt; &lt;ControlTemplate.Triggers&gt; &lt;Trigger Property="IsPressed" Value="True"&gt; &lt;Setter TargetName="NormalImg" Property="Visibility" Value="Hidden"/&gt; &lt;Setter TargetName="PressedImg" Property="Visibility" Value="Visible"/&gt; &lt;/Trigger&gt; &lt;/ControlTemplate.Triggers&gt; &lt;/ControlTemplate&gt; &lt;/Button.Template&gt; &lt;/Button&gt; </code></pre> <p>with codebehind </p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace CFYLauncher { /// &lt;summary&gt; /// Interaction logic for PageNavButton.xaml /// &lt;/summary&gt; public partial class PageNavButton : Button { public PageNavButton() { InitializeComponent(); } public string ImageUri { set { this.NormalImg.Source = new BitmapImage(value); } } } } </code></pre> <p>As stated below in the reply to Tom Carver's help, I'm getting two major problems with this code:</p> <ol> <li>"Error 1 'CFYLauncher.PageNavButton' does not contain a definition for 'NormalImg' and no extension method 'NormalImg' accepting a first argument of type 'CFYLauncher.PageNavButton' could be found (are you missing a using directive or an assembly reference?) </li> <li>"Error 2 The best overloaded method match for 'System.Windows.Media.Imaging.BitmapImage.BitmapImage(System.Uri)' has some invalid arguments" and "Cannot convert from 'string' to 'System.Uri'</li> </ol> <p>When I change 'public string ImageUri' to 'public Uri ImageUri' the 2 errors in 2) go away, but it still can't find NormalImg, which doesn't make sense to me, because it's right there.. I must be missing something really obvious</p>
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