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If you have been looking out for a way to declare some constants in your xaml and then programmatically access them, then here’s a way I follow.

Open your App.xaml and add the following string constant to it

<Application    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    x:Class="SampleSilverlight.App"    xmlns:clr="clr-namespace:System;assembly=mscorlib">    <Application.Resources>        <clr:String x:Key="DC">DevCurry</clr:String>    </Application.Resources></Application>

We will access this string constant programmatically using C# or VB.NET. 

Open your Page.xaml and add a TextBlock and a Button to it.

<StackPanel Height="200" Width="200">   <TextBlock x:Name="tb"></TextBlock>    <Button x:Name="btnFetch" Content="Fetch"            Click="btnFetch_Click"></Button></StackPanel>

Now add the following code on button click:

C# 

private void btnFetch_Click(object sender, RoutedEventArgs e){    if (Application.Current.Resources.Contains("DC"))    {        tb.Text = (string)Application.Current.Resources["DC"];    }}

VB.NET

Private Sub btnFetch_Click(ByVal sen As Object, ByVal e As RoutedEventArgs)    If Application.Current.Resources.Contains("DC") Then       tb.Text = CStr(Application.Current.Resources("DC"))    End IfEnd Sub

The Application.Resources gets a collection of Application-Scoped resources.

On clicking the button, the text ‘DevCurry’ gets displayed