<Window x:Class="FirstTestGridViewWPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"        
        Title="MainWindow" Height="350" Width="525" xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation">
        <Grid>
        <telerik:RadGridView Name="radGridView1" 
                             AutoGenerateColumns="False" 
                            IsReadOnly="False"
                            CanUserInsertRows="True" ShowInsertRow="True" BeginningEdit="radGridView1_BeginningEdit" 
                             >
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding FirstName}"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding lastName}"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Married}"/>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>
     </Grid>
</Window>
