Why Binding DataTable doesn't work in XAML

Question

My MainWindow Class have a property called "DataTable":

'Table To import the Excel Sheet
Public Property DataTable As DataTable

An Excel Sheet sets the DataTable property. My question is why I cannot bind that property to a DataGrid. The following code doesn't work:

<DataGrid Name="TestGrid" Visibility="Visible" ItemsSource="{Binding Path=DataTable}">
</DataGrid>

The answer to this question seems to be unclear and doesn't explain too much about how to use the ObjectDataProvider Class.