WPF Treeview item template

EDN Admin · Jan 24, 2012

Hi, I have created a wpf treeeview item template as below and am trying to fill it in using code. The controls are created but the header text does not show even though I am specifically assigning it a value. It is blank. Why?
<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small TreeView<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small
<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small HorizontalAlignment<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="Stretch"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Margin<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="3,35,2,-2"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Name<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="treeView1"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
VerticalAlignment<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="Stretch"<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small
<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small Drop<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="treeView1_Drop"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
AllowDrop<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="True"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
MouseRightButtonUp<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="treeView1_MouseRightButtonUp"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
ItemsSource<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="{<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small Binding<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small }"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
IsTextSearchEnabled<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="True"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
SelectedItemChanged<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="treeView1_SelectedItemChanged <span style="font-family:Consolas; color:#a31515; font-size:x-small

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small TreeView.ItemTemplate

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small HierarchicalDataTemplate<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
x<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small :<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small Name<span style="font-family:Consolas; color:#0000ff; font-size:x-small
<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="HDTHeader

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small HeaderedItemsControl<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Header<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="{<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small Binding<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
RelativeSource<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ={<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small RelativeSource<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Self<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small },<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Path<span style="font-family:Consolas; color:#0000ff; font-size:x-small
<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small =ToolTip}

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small StackPanel<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Orientation<span style="font-family:Consolas; color:#0000ff; font-size:x-small
<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="Horizontal

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small CheckBox<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
x<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small :<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small Name<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="myChkBox"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Checked<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="AddLayer"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Unchecked<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="RemoveLayer"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
IsChecked<span style="font-family:Consolas; color:#0000ff; font-size:x-small


<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small TextBlock<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Name<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="mytb"<span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small <span style="font-family:Consolas; color:#ff0000; font-size:x-small
Text<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small ="jaja"<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small


<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small </<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small StackPanel

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small </<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small HeaderedItemsControl<span style="font-family:Consolas; color:#a31515; font-size:x-small

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small </<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small HierarchicalDataTemplate

<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small </<span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small <span style="font-family:Consolas; color:#a31515; font-size:x-small TreeView.ItemTemplate
And the code to add the new value is:
<span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small myTreeviewItem =
<span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small <span style="font-family:Consolas; color:#0000ff; font-size:x-small new<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small
<span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small <span style="font-family:Consolas; color:#2b91af; font-size:x-small TreeViewItem<span style="font-family:Consolas; font-size:x-small
<span style="font-family:Consolas; font-size:x-small () { Header = NodeName };
<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small
myTreeviewItem.HeaderTemplate = MyTreeview.ItemTemplate;
myTreeviewItem.Header = NodeName;
<span style="font-family:Consolas; font-size:x-small
myTreeviewItem.ToolTip = NodeName;

<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small I have put breakers and checked to confirm
the nodename actually has a value.
<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small When
I run this I see the checkbox but no text beside it.
<span style="font-family:Consolas; font-size:x-small <span style="font-family:Consolas; font-size:x-small MyTreeview.Items.Add(myTreeviewItem);

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WPF Treeview item template

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