CODEWITHSUNDEEP
c#wpfcombobox
dMilan
dMilan

Reputation: 257

WPF Binding to combobox

I have list of Tabs where Tab is:

public class Tab
{
  public int Id {get; set;}
  public string Name {get; set}
  public List<country> Country {get; set;} 

}

Now, I want to bind it to two comboboxes: First combobox is ok, but at second I want to display country list.

 <custom:ComboBox  Title="Tab" 
               ItemsSource="{Binding Tabs, Mode=TwoWay}"
               ValuePath="Id"
               Value="{Binding Model.Id, Mode=TwoWay}"
               DisplayPath="Name"
               IsEnabled="{Binding IsEnabled, Mode=TwoWay}"/>


 <custom:ComboBox  Title="Country" 
                SelectedItem="{Binding Model.Country, Mode=TwoWay}"
                ItemsSource="{}" 
                DisplayPath="CountryName"
                IsEnabled="{Binding IsEnabled, Mode=TwoWay}"/>

How to set ItemsSource at second combobox when I know Id. Is another way than create varible, like selectedList and then bind to it?

EDIT

enter image description here

I am creating new dialogbox and I'm sending model with tab id and dialogbox context have tab list.

Upvotes: 3

Views: 1072

Answers (1)

Mighty Badaboom
Mighty Badaboom

Reputation: 6155

Give your first ComboBox a name with x:Name="FirstComboBox" and change your ItemsSource of the second ComboBox to ItemsSource="{Binding ElementName=FirstComboBox, Path=SelectedItem.Country}".

Just a hint: When binding collections in xaml use ObservableCollection<T> instead of List<T>.

Upvotes: 4

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