How can I access ResourceDictionary in wpf from C# code?

Question

Hi All, I have a datatemplate defined in a xaml file and i wana access it via c# code. Can anyone please tell me how can i access it? I added a new ResourceDictionary file and it's name is Dictionary1.xaml there I have a data template like

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"&gt;
    <DataTemplate x:Key="mytemplate">
        <TextBlock Text="Name:" Background="Blue"/>
    </DataTemplate>
</ResourceDictionary>

not i have a listbox called listBox1 and i wana assign it to it's Itemtemplate property but i m not getting how can i do it?

Answer 1

If you for example have a template for Button in your resource dictionary in the App.xaml file you can access it using the following code:

Application.Current.Resources[typeof(Button)]

Answer 2

Where exactly are you defining it?

If you define it in the ResourceDictionary of your object, then

Application.Current.Resources[typeof(yourDataTemplateTargetType)]

should work. If you are defining it as a member of something else, like say, an ItemsControl, you need to get a handle to the ItemsControl instance and call the ItemTemplate property.

Edit: Ok, I think we're getting somewhere. So you are defining a ResourceDictionary in its own file. Before you can use it in your UI and access it from your code behind, you need to merge that ResourceDictionary into your application. Are you doing this?

If you are, then the next step is to get this resource. Each FrameworkElement has a method called FindResource. This method is great because it walks up the ResourceDictionary tree and attempts to locate the resource with the key. So, if you want to access this resource from a UserControl, you can do the following in the code behind:

FindResource(typeof(yourDataTemplateTargetType));

If this doesn't work for you, please show us exactly how you are declaring this resource dictionary and how it is getting merged into your application's resources.