Question

I need to select custom item under WPF Combobox by code behind. For example: “Spanish”

 UILanguages languages = new UILanguages();                
                languages.Add(
                        new UILanguage
                        {
                            Culture = "en",
                            SpecCulture = "en-US",
                            EnglishName = "English"
                        });

                languages.Add(
                    new UILanguage
                    {
                        Culture = "es",
                        SpecCulture = "es-ES",
                        EnglishName = "Spanish"
                    });

                CollectionViewSource cvs = new CollectionViewSource
                {
                    Source = languages
                };

                cmbLanguages.SetBinding(ItemsControl.ItemsSourceProperty, new Binding { Source = cvs });

Markup

  <ComboBox Grid.Column="1" Height="23" HorizontalAlignment="Left" Margin="0,1,0,0" 
              Name="cmbLanguages" VerticalAlignment="Top" Width="207"
           ItemsSource="{Binding Source={StaticResource UILanguagesViewSource}}" 
              />

Please, note that

but this
Set SelectedItem of WPF ComboBox
and this
WPF combobox binding from code behind
doesn’t help at all.

Any clue?

Thank you!

Answer 1

You’d need to set the SelectedValue property to the specific instance of your language. This could be done via something like:

// Get first element with proper name from the bound source
cmdLanguages.SelectedValue = languages.FirstOrDefault(l => l.EnglishName == "Spanish");