C# data binding question

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Hello all I’m trying to load a combobox from a static list of a class US_State I made. The list gets populated in my WPF window with all the correct data but my combobox loads if I put ComboboxState.ItemsSource = Get_States; in my window code behind but I thought I could load the combobox by just binding. Here is my code I have

C#

public partial class ProfileScreen : Window
    {	//List populates with correct data
	public List<US_State> Get_States = StatesArray.Get_States;
     }
//xaml
<ComboBox x:Name="ComboboxState" Grid.Column="1" Grid.Row="2" VerticalAlignment="Center" Width="120" HorizontalAlignment="Left" ToolTip="Enter your state."
                          ItemsSource="{Binding Get_States, RelativeSource={RelativeSource AncestorType=Window, Mode=FindAncestor}, UpdateSourceTrigger=PropertyChanged}"
                          DisplayMemberPath="Name" SelectedValuePath="Abbreviation"/>

My code in Us_State uses Inotify interface and static class just creates a List<us_state> and loads it.

What I have tried:

databinding dont work but this works in codebehind

Posted 19-Nov-18 21:11pm

TheBigBearNow

Updated 20-Nov-18 2:48am

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2 solutions

Solution 1

XAML

<ComboBox x:Name="ComboboxState" Grid.Column="1" Grid.Row="2" VerticalAlignment="Center" Width="120" HorizontalAlignment="Left" ToolTip="Enter your state."
                          ItemsSource="{Binding Get_States} SelectedItem="{Binding SimpleStringProperty, Mode=TwoWay}" , UpdateSourceTrigger=PropertyChanged}"
                          DisplayMemberPath="Name" SelectedValuePath="Abbreviation"/>

Try this and see if it will work. Let me know if did not.

Posted 20-Nov-18 1:16am

Aydin Homay

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Richard Deeming · Accepted Answer · 2018-11-20T02:48:00

public List<US_State> Get_States = StatesArray.Get_States;

WPF data binding only works with properties. You've declared a field, which won't work.

If you check the output window in Visual Studio, you'll see a data binding error telling you that the property doesn't exist.

Try changing your field to a property:

public List<US_State> Get_States => StatesArray.Get_States;