C# – How to access ResourceDictionary in wpf from C# code


I have a DataTemplate defined in a xaml file that I want to access via C# code.
Can anyone please tell me how can I access it?
I added a new ResourceDictionary file and its name is Dictionary1.xaml.
I have a data template such as:

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

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

Best Solution

Since Application.Current was null in my case, I've ended up using this:

    var myResourceDictionary = new ResourceDictionary();
    myResourceDictionary.Source =
        new Uri("/DllName;component/Resources/MyResourceDictionary.xaml",

and then getting the specified key I needed by using myResourceDictionary["KeyName"] as TypeOfItem