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RelativeSource FindAncestor Binding from XamEditor Controls to CellValuePresenter doesn't Work with Default Namespace?
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Hi,

In a XamDataGrid (v13.2) control I store my field view model object containing formatting info for the field in Field.Label (object) property. Then I use relative source findancestor mode binding to format the dataitem inside each CellValuePresenter.

For instance, for a numeric column where I have XamNumericEditor inside the CellValuePresenter I set the Format property to bind to its ancestor of type CellValuePresenter, using the path Field.Label.ValueFormat (a string property containing numeric formatting info). Like so:

<Style TargetType="{x:Type Editors:XamNumericEditor}">
   <Setter Property="Format" Value ="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataPresenter:CellValuePresenter}, Path=Field.Label.ValueFormat}" />
</Style>

The binding expression did work, but it broke when I changed DataPresenter namespace uri

from (worked):

xmlns:DataPresenter="clr-namespace:Infragistics.Windows.DataPresenter;assembly=InfragisticsWPF4.DataPresenter.v13.2" 

to any of these (none worked):

xmlns:DataPresenter="http://infragistics.com/DataPresenter"

xmlns:DataPresenter="http://schemas.infragistics.com/xaml/wpf"

xmlns:DataPresenter="http://infragistics.com/Windows"

Here's the output when I set the binding TraceLevel to High with xmlns:DataPresenter="http://infragistics.com/DataPresenter":

System.Windows.Data Warning: 54 : Created BindingExpression (hash=25807577) for Binding (hash=17780589)
System.Windows.Data Warning: 56 : Path: 'Field.Label.ValueFormat'
System.Windows.Data Warning: 58 : BindingExpression (hash=25807577): Default mode resolved to OneWay
System.Windows.Data Warning: 59 : BindingExpression (hash=25807577): Default update trigger resolved to PropertyChanged
System.Windows.Data Warning: 60 : BindingExpression (hash=25807577): Attach to Infragistics.Windows.Editors.XamNumericEditor.Format (hash=30941604)
System.Windows.Data Warning: 64 : BindingExpression (hash=25807577): RelativeSource (FindAncestor) requires tree context
System.Windows.Data Warning: 63 : BindingExpression (hash=25807577): Resolve source deferred

System.Windows.Data Warning: 65 : BindingExpression (hash=25807577): Resolving source
System.Windows.Data Warning: 68 : BindingExpression (hash=25807577): Found data context element: <null> (OK)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=18763302)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CardPanel (hash=34651994)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CellValuePresenter (hash=43432495) <-- SHOULD'VE STOPPED HERE!
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CellPlaceholder (hash=55348143)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried StackPanel (hash=28371241)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=54014584)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CardPanel (hash=16369212)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried DataRecordCellArea (hash=13105182)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=50837775)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=66800497)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CardPanel (hash=27336841)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried DataRecordPresenter (hash=54886792)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried XamDataGrid (hash=39801087)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=24219082)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=16645150)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Border (hash=15588630)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried RvApiReportView (hash=6079946)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=54719514)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=22713585)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Border (hash=3095679)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=27861117)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CustomContentPane (hash=40761713)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried SplitPane (hash=13364467)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=49423469)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=42158038)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=43878027)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Border (hash=59357923)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried Grid (hash=64459265)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried AdornerDecorator (hash=43262477)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried CustomPaneToolWindow (hash=40096741)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ContentPresenter (hash=53817976)
System.Windows.Data Warning: 71 : Lookup ancestor of type CellValuePresenter: queried ToolWindowHostWindow (hash=14599739)

System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='Infragistics.Windows.DataPresenter.CellValuePresenter', AncestorLevel='1''. BindingExpression:Path=Field.Label.ValueFormat; DataItem=null; target element is 'XamNumericEditor' (Name=''); target property is 'Format' (type 'String')

What could be the reason?