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QuestionDebug/Troubleshoot WPF Binding settings Pin
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QuestionWPF for Windows CE 6.0 Pin
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QuestionCannot find governing FrameworkElement or FrameworkContentElement Pin
stofel2-Aug-10 5:15
stofel2-Aug-10 5:15 
Hi,

I'm a newbie in wpf and I have a problem with the binding.

I have a class inherited from FramworkElement and there is a Collection. The Items of this collection are inherited from DependencyObject.

On the Form is only one TextBox. I want that the text, which is typed by the user will be copied into the first Item of the collection.

Here some code
public class Item: DependencyObject
    {
        public string Name { get; set; }

          public virtual object Value {
            get { return GetValue(ValueProperty); }
            set { SetValue(ValueProperty, value); }
        }

        #region DependenvyProperty
          public static readonly DependencyProperty ValueProperty =
              DependencyProperty.Register("Value", typeof(object), typeof(Item));
        #endregion

    }

    public class ItemContainer : FrameworkElement
    {
       
        private List<Item> _itemlist = new List<Item>();

        public List<Item> ItemList
        {
            get { return _itemlist; }
        }
    }


and the form:

Window x:Class="WpfApplication2.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="417" Width="589" xmlns:my="clr-namespace:WpfApplication2">
    <Grid>
        <my:ItemContainer Height="18" HorizontalAlignment="Left" Margin="-168,0,0,33" x:Name="itemContainer1" VerticalAlignment="Bottom" Width="18">
            <my:ItemContainer.ItemList>
                <my:Item Name="Item1" Value="{Binding ElementName=txtItem1, Path=Text}" />
                <my:Item Name="Item2" />
            </my:ItemContainer.ItemList>
        </my:ItemContainer>
        <Canvas Margin="16,18,8,6" Name="canvas1">
            <TextBox Canvas.Left="88" Canvas.Top="15" Height="23" Name="txtitem1" Width="89" />
            <Label Canvas.Left="14" Canvas.Top="16" Height="22" Name="label1" Width="58">Item1
            </Label>
        </Canvas>
    </Grid>
</Window>


At runtime the program displays the error2 Cannot find governing FrameworkElement or FrameworkContentElement.
I don't want to inherit item from FrameworkelElement because in the real project the class Item is inherited from another class.

What can I do to transfer the text from the textbox to the first item of the collection ?

Thanks in Advance
Willibert Stofel
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QuestionFilling out extent of margins. Pin
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QuestionCreating a Binding Resource Pin
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QuestionBinding xaml property to class property Pin
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