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POAdding item in empty observable collection which bind to combobox lead to auto select this item in combobox, but selected value is still null
 

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  1. POAdding item in empty observable collection which bind to combobox lead to auto select this item in combobox, but selected value is still null
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    <p>I have this throuble: </p> <p>There observable collection, which bind to combobox. When collection contains any items, all works fine, I add items in collection, then choose him in combobox, selected value is not null.</p> <p>I have items control,which contains any component controls which reflect any entity. I may select parameter this entity in combobox which bind to observable collection. </p> <p>If I add first new entity in content control and collection is empty, then add item in collection - this item automaticaly select in combobox, but combobox selected value is null. It turns out, this situation: item select in combobox, but combobox selected value is null. If i select this item manualy, selected value is set to this item and work further аштую I don't understand how it may be. There is my code: this is collection</p> <pre><code>public ObservableCollection&lt;AnyType&gt; AnyTemplates { get; set; } </code></pre> <p>this is xaml code combobox:</p> <pre><code>&lt;ComboBox Name="cmbKeyA" Width="100" SelectedValue="{Binding Path=KeyAName}" ItemsSource="{Binding Path=DataContext.KeyTemplates, RelativeSource={RelativeSource AncestorType={x:Type UserControl}}}" DisplayMemberPath="Name" SelectedValuePath="Name"/&gt; </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USPopov Sergey
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COI found something else, the problem is that when i change value(which bind to combobox selectedValue property) in collection which bind my combobox - selected item in combobox is changed, but selected value not update until I manually choose this element in combobox. Property which i change send PropertyChanged event.
      singulars
      1. POAdding item in empty observable collection which bind to combobox lead to auto select this item in combobox, but selected value is still null
      1. USPopov Sergey
 

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