Bovi_Khurja Bovi_Khurja - 3 months ago 34
C# Question

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


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?

Answer

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.

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