ComboBox not binding in datagrid <p>I have a ComboBox binded to BindingList with strings. It is working fine.</p> <pre><code>public BindingList&lt;string&gt; MyList { get { BindingList&lt;string&gt; list = new BindingList&lt;string&gt;(); list.Add("one"); list.Add("two"); list.Add("three"); return list; } } </code></pre> <p>xaml:</p> <pre><code>&lt;ComboBox x:Name="MyCmbBox" ItemsSource="{Binding Path=MyList}"&gt; &lt;ComboBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;TextBlock Text="{Binding}" /&gt; &lt;/DataTemplate&gt; &lt;/ComboBox.ItemTemplate&gt; &lt;/ComboBox&gt; </code></pre> <p>When I same code put into the WPF 4 datagrid, it's not working any more (but the combo outside datagrid is still running ok):</p> <pre><code>&lt;DataGrid AutoGenerateColumns="False"&gt; &lt;DataGrid.Columns&gt; &lt;DataGridTemplateColumn&gt; &lt;DataGridTemplateColumn.CellTemplate&gt; &lt;DataTemplate&gt; &lt;ComboBox x:Name="MyCmbBox" ItemsSource="{Binding Path=MyList}"&gt; &lt;ComboBox.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;TextBlock Text="{Binding}" /&gt; &lt;/DataTemplate&gt; &lt;/ComboBox.ItemTemplate&gt; &lt;/ComboBox&gt; &lt;/DataTemplate&gt; &lt;/DataGridTemplateColumn.CellTemplate&gt; &lt;/DataGridTemplateColumn&gt; &lt;/DataGrid.Columns&gt; &lt;/DataGrid&gt; </code></pre> <p>Why? Thank you</p>