We take a Silverlight application and write the following XAML code in editor

<Grid x:Name="LayoutRoot" Background="White" ShowGridLines="True">
 <TextBox Height="36" HorizontalAlignment="Left" FontSize="17" Text="{Binding Path=fname}" Margin="164,14,0,0" Name="textBox1" VerticalAlignment="Top" Width="182" />
 <TextBlock Height="23" HorizontalAlignment="Left" Margin="81,16,0,0" FontSize="18" Name="textBlock1" Text="Name :" VerticalAlignment="Top" /> </Grid>

And following code on MainPage.xaml.vb

Partial Public Class MainPage
 Inherits UserControl
 Public Sub New()
InitializeComponent()
 Dim obj As New abc()
obj.fname = "Alok Kumar"
 textBox1.DataContext = obj
 End Sub
 Public Class abc
 Public Sub New()
 End Sub
 Public Property fname() As String
 Get
 Return m_fname
 End Get
 Set(value As String)
m_fname = Value
 End Set
 End Property
 Private m_fname As String
 End Class
End Class

When, We run our application the output will be look like below figure

data binding with textboxdata binding with textbox