Global variable in Silverlight

To share the value across, global variables are required. Similarly, if a value has to be passed from one XAML to another global variable concept can be used.

Steps:
1) Create property in APP.XAML

Private _gloVar As String

Property gloVar() As String
Get
Return _gloVar
End Get
Set(ByVal value As String)
_gloVar = value
End Set
End Property

2) From one XAML's code behind, create object for APP and then get the current instance.
3) Using that object, property created in step 1 is accessible. Using this set the value.

'Setting value from one xaml
'get the current application object
Dim objApp As App = App.Current

'set the value to the app var
objApp.gloVar = "Value you want to store"

4) From where (XAML) you want value to be used, get current instance of the APP like described in step 2 and access the property value from that object.

'Reading the value from another xaml
'get the current Application object
Dim objApp As App = App.Current

'read the application variable
TextBlock.Text = "Content loaded from global variable: " + objApp.gloVar