Set DataContext in XAML

Question

I have this simple application that adds some items to a combobox:

public partial class Window1 : Window { private ObservableCollection<string> _dropDownValues = new ObservableCollection<string>(); public ObservableCollection<string> DropDownValues { get { return _dropDownValues; } set { _dropDownValues = value; } } private string _selectedValue; public string SelectedValue { get { return _selectedValue; } set { _selectedValue = value; } } public Window1() { InitializeComponent(); DataContext = this; DropDownValues.Add("item1"); DropDownValues.Add("item1"); DropDownValues.Add("item1"); DropDownValues.Add("item1"); DropDownValues.Add("item1"); DropDownValues.Add("item1"); } }

And here is the XAML file:

<Window x:Class="WpfApplication2.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <StackPanel HorizontalAlignment="Left" Margin="10"> <ComboBox Margin="0 0 0 5" ItemsSource="{Binding DropDownValues}" SelectedValue="{Binding SelectedValue}" Width="150"/> </StackPanel> </Window>

Can someone show me how can I set the DataContext from the xaml file instead of initializing in the constructor ?

Thanks.

Anatoliy Nikolaev · Accepted Answer · 2014-02-17 07:32:30Z

Just change the Window to bind DataContext to itself:

<Window x:Class="WpfApplication2.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" DataContext="{Binding RelativeSource={RelativeSource Self}}" ... />

The Internet · Accepted Answer · 2011-08-25 15:03:08Z

I believe the DataContext in this scenario is implicit and does not have to be set since you are using the code behind. If you were using MVVM you would add a reference to that folder and class inside of you XAML markup and set the resource key equal to a value that can then be declared as the DataContext inside of a child elements DataContext property. But in your case (since you are not using MVVM) you shouldn't have to do that.

Collectives™ on Stack Overflow

Set DataContext in XAML

2 Answers 2

Comments

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Linked

Related