WPF control reference from xaml is not visible on the code side

Question

<ContextMenu x:Key="EffectsContext" Name="EffectsMenu" StaysOpen="true"> <MenuItem Header="Add Blur"> <MenuItem.Icon> <Image Width="16" Height="16" Source="{Binding Source={x:Static prop:Resources.BlurIcon}, Converter={StaticResource BitmapToImageSourceConverter}}" /> </MenuItem.Icon> </MenuItem> <MenuItem Header="Add Fractal"> <MenuItem.Icon> <Image Width="16" Height="16" Source="{Binding Source={x:Static prop:Resources.Fractalcon}, Converter={StaticResource BitmapToImageSourceConverter}}" /> </MenuItem.Icon> </MenuItem> </ContextMenu>

EffectsMenu isn't accessable in my MainWindow.xaml.cs file. When I try it, it complains that it's not accessible in the current context:

public MainWindow ( ) { this.InitializeComponent ( ); Console.WriteLine ( EffectsMenu ); }

I also tried:

x:Name="EffectsMenu"

but same result.

Any ideas what might be wrong and how to fix it?

And where is this menu defined? In a Resources section? Resources have Keys, not Names. — Henk Holterman
– Henk Holterman, Commented May 13, 2011 at 22:08
Yes It's inside the TreeView control's resources. So should I put it somewhere else and make it accessible to both? — Joan Venge
– Joan Venge, Commented May 13, 2011 at 22:33
But, why would you like to access the control from the code behind? Maybe there is a better way to achieve what you REALLY neeed — Liel
– Liel, Commented Aug 3, 2013 at 7:53

Haris Hasan · Accepted Answer · 2011-05-13 20:50:50Z

4

Try this

 var v = FindResource("EffectsContext");

answered May 13, 2011 at 20:50

Haris Hasan

30.1k13 gold badges97 silver badges124 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Ben · Accepted Answer · 2011-05-14 09:32:51Z

If you added an x:key="" i think that you declared the ContextMenu in a ResourceDictionary(like <SomeControl.Resources>). In this case you can't access it directly, try the following:

Xaml:

<Window x:Class="Test.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525" > <StackPanel x:Name="sp"> <StackPanel.Resources> <ContextMenu x:Key="EffectsContext" Name="EffectsMenu" StaysOpen="true"> </ContextMenu> </StackPanel.Resources> </StackPanel> </Window>

Code-behind:

ContextMenu menu = this.sp.Resources["EffectsContext"] as ContextMenu;

Thanks, I had this code, but got a crash so thought of trying to access the control directly, instead of this searching and casting. But if it's not possible, then I will use it.

kenwarner · Accepted Answer · 2011-05-13 20:42:30Z

1

Remove the x:Key on the ContextMenu

answered May 13, 2011 at 20:42

kenwarner

29.2k31 gold badges133 silver badges174 bronze badges

Comments

Tim · Accepted Answer · 2011-05-13 20:42:45Z

0

should that x:Key be x:Name instead?

answered May 13, 2011 at 20:42

Tim

15.3k1 gold badge48 silver badges70 bronze badges

1 Comment

Joan Venge Over a year ago

I use the Key in the xaml side, but I changed the Name to x:Name, but same error.

Cilvic · Accepted Answer · 2011-05-13 20:39:49Z

-2

Can't test here, just a guess:

this.EffectsMenu

answered May 13, 2011 at 20:39

Cilvic

3,4473 gold badges37 silver badges57 bronze badges

Collectives™ on Stack Overflow

WPF control reference from xaml is not visible on the code side

5 Answers 5

Comments

1 Comment

Comments

1 Comment

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

Comments

1 Comment

Comments

1 Comment

Comments

Linked

Related