Change the content of a TextBlock by using Button click event

    

<UserControl x:Class='SilverlightApplication3.MainPage'
    xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation' 
    xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
    xmlns:d='http://schemas.microsoft.com/expression/blend/2008' 
    xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006' 
    mc:Ignorable='d' 
    d:DesignWidth='640' 
    d:DesignHeight='480'>    
    <Grid x:Name="LayoutRoot" Background="White">
    <StackPanel>
      <TextBlock x:Name="lblMessage" Text="Hello world." Margin="5"></TextBlock>
      <Button x:Name="ClickMe" Content="Click Me!" Margin="5"
       Click="cmdClickMe_Click"></Button>
    </StackPanel>
  </Grid>
</UserControl>

//File: Page.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;

namespace SilverlightApplication3
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void cmdClickMe_Click(object sender, RoutedEventArgs e)
        {
            lblMessage.Text = "AAA";
        }
    }
}

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Change the content of a TextBlock by using Button click event : Event « Events « Silverlight

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