I have been looking into event handling with C# and Silverlight and I can't seem to grasp it. I'm simply trying to get this adding event handlers in managed code example to compile from
http://msdn.microsoft.com/en-us/library/cc189018(v=vs.95).aspx

I keep getting the errors "The name 'TextBlock_MouseEnter' does not exist in the current context.
&
"The name 'TextBlock_MouseLeave' does not exist in the current context.

Please help! Thanks in advance.

<UserControl x:Class="EventHandlingInSilverLight.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:DesignHeight="300" d:DesignWidth="400">



    <Grid x:Name="Layoutroot" Loaded="LayoutRoot_Loaded">
         <StackPanel>
        <TextBlock Name="textBlock1"> Put the mouse over this text</TextBlock>
        </StackPanel>
    </Grid>
</UserControl>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
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 EventHandlingInSilverLight
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
        {
            textBlock1.MouseEnter += new MouseEventHandler(textBlock1_MouseEnter);
            textBlock1.MouseLeave += new MouseEventHandler(textBlock1_MouseLeave);
            
        }
    }

}

Edited 4 Years Ago by dunktap: n/a

In line 24 of your second code block you are adding the event handler 'textBlock1_MouseEnter' to the MouseEnter event, but you don't actually have a method defined with that name anywhere that I can see, thus the error you are getting. Create the methods.

This article has been dead for over six months. Start a new discussion instead.