WPF: Label doesn't show up in code behind

Question

Ok, so I've been looking all over for a anwser, but I starting to wonder if I would even know it if I saw it. I'm new to WPF, but have been doing Windows Forms in C# for a few years now.

My Question is: Why can't I access a label from the code behind that I "dragged-n-dropped" on to the grid and renamed?

XML CODE:

<Window x:Class="IMCommand.NewProblemWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="New Problem" Height="800" Width="800" Loaded="Window_Loaded">
    <Grid>
        <GroupBox Header="Initial Detection and Recording" Height="168" HorizontalAlignment="Left" Margin="12,45,0,0" Name="groupBox1" VerticalAlignment="Top" Width="754" FontSize="15">
            <Grid>
                <Label Content="Application/Server" Height="28" HorizontalAlignment="Left" Margin="6,6,0,0" Name="label1" VerticalAlignment="Top" />
                <TextBox Height="23" HorizontalAlignment="Left" Margin="144,11,0,0" Name="textBox1" VerticalAlignment="Top" Width="324" Background="#FFCBCBCB"></TextBox>

                <Label Content="AE Problem Ticket #" Height="28" HorizontalAlignment="Left" Margin="6,52,0,0" Name="label2" VerticalAlignment="Top" />
                <TextBox Background="#FFCBCBCB" Height="23" HorizontalAlignment="Left" Margin="155,54,0,0" Name="BOX_AEProblem" VerticalAlignment="Top" Width="175" />

                <Label Content="Start Time" Height="28" HorizontalAlignment="Left" Margin="6,86,0,0" Name="label4" VerticalAlignment="Top" Width="85" />
                <TextBox Height="23" HorizontalAlignment="Left" Margin="97,91,0,0" Name="BOX_StartTime" VerticalAlignment="Top" Width="118" IsReadOnly="True" />

                <Label Content="Label" Height="28" HorizontalAlignment="Left" Margin="221,89,0,0" Name="LBL_StartTimeConvert" VerticalAlignment="Top" Width="128" />
            </Grid>
        </GroupBox>

        <GroupBox Header="Classification and Initial Support" Height="333" HorizontalAlignment="Left" Margin="12,260,0,0" Name="groupBox2" VerticalAlignment="Top" Width="754" FontSize="15">
            <Grid>
                <Label Content="Description" Height="28" HorizontalAlignment="Left" Margin="6,96,0,0" Name="LBL_Description" VerticalAlignment="Top" />
                <RichTextBox Height="137" HorizontalAlignment="Left" Margin="97,96,0,0" Name="richTextBox1" VerticalAlignment="Top" Width="590" Background="#FFCBCBCB" Cursor="IBeam" ToolTip="Describe the problem..." VerticalScrollBarVisibility="Visible" SpellCheck.IsEnabled="True" FontSize="12" BorderBrush="#FF151414" />
                <RichTextBox Height="28" HorizontalAlignment="Left" Margin="97,44,0,0" Name="richTextBox2" VerticalAlignment="Top" Width="590" Background="#FFCBCBCB" />
                <Label Content="Summary" Height="28" HorizontalAlignment="Left" Margin="6,44,0,0" Name="label3" VerticalAlignment="Top" />
            </Grid>
        </GroupBox>
    </Grid>
</Window>

The particular label I'm refereing to is the last label in the first GroupBox named "LBL_StartTimeConvert"

<Label Content="Label" Height="28" HorizontalAlignment="Left" Margin="221,89,0,0" Name="LBL_StartTimeConvert" VerticalAlignment="Top" Width="128" />

When I go into the Code behind file, I am unable to get "LBL_StartTimeConvert" to show up in intellisense. How do I access this label from the C# code? I need to change the labels text. Thanks!

PS>> Any good resources/books that you can point me to on learning WPF (like WPF 101 or WPF for Dummies) would be much appreciated!

Answer 1

I had the same problem. A restart of VS solved it. Sometimes it really is a bug ;)

Answer 2

Please make sure your namespace and window name is same in code behind as xaml file cause when I have pasted your code in my sample window, it working fine and also I can access label LBL_StartTimeConvert.

Please create new sample WPF project and put your code which is inside <grid> tag and then check it.