Changing resource in the runtime

Question

Let's suppose, that we've got the following dictionary:

<ResourceDictionary xmlns:sys="clr-namespace:System;assembly=mscorlib"> <sys:String x:Key="Test">Ala ma kota</sys:String> </ResourceDictionary>

This dictionary is merged somewhere in custom control:

<UserControl.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="MyDictionary.xaml" /> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </UserControl.Resources>

How can I completely change value of the resource "Test" during application runtime from the code behind?

I forgot to mention, that I want to do it from the codebehind. I know, that I can manually create binding, but I suspect, there's another, simpler way :) — Spook
– Spook, Commented Dec 3, 2013 at 18:43
If you asking to change that string from code behind then take a look at my answer :) — dev hedgehog
– dev hedgehog, Commented Dec 3, 2013 at 18:46

Rohit Vats · Accepted Answer · 2013-12-03 19:06:01Z

You can change resource from code-behind but main thing is how you are binding to that resource i.e. via StaticResource or DynamicResource.

Modify like this -

Resources["Test"] = "Ala ma kota updated";

XAML (After resource update from code behind, text value will differ for two approaches) -

<TextBlock Text="{StaticResource Test}"/> // Will be Ala ma kota <TextBlock Text="{DynamicResource Test}"/> // Will be Ala ma kota updated

dev hedgehog · Accepted Answer · 2013-12-03 18:45:43Z

If you are looking to change a resource from code behind then just access the resource like a dictionary and change desired value :)

Like this:

this.Resource["myThickness"] = new Thickness(2);

That would be it :)

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