silverlight datagrid row selectionchanged

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Silverlight

<telerik:RadGridView Name="DashList" ItemsSource="{Binding Path=Infos}" Width="600" BorderThickness="0" AutoGenerateColumns="False">
                    <telerik:RadGridView.Columns>
                            <telerik:GridViewDataColumn IsVisible="True" DataMemberBinding="{Binding FName}" Header="FirstName" Width="*" IsReadOnly="True"/>
                            <telerik:GridViewDataColumn IsVisible="True" DataMemberBinding="{Binding LName}" Header="LastName" Width="*" IsReadOnly="True"/>
                            <telerik:GridViewDataColumn IsVisible="True" DataMemberBinding="{Binding Total Mins}" Header=" Mins" Width="*" IsReadOnly="True"/>
                            <telerik:GridViewDataColumn IsVisible="True" DataMemberBinding="{Binding Status}" Header="Status" Width="*" IsReadOnly="True">

                            <telerik:GridViewDataColumn.CellTemplate>

                            </telerik:GridViewDataColumn.CellTemplate>
                        </telerik:GridViewDataColumn>
                    </telerik:RadGridView.Columns>
                </telerik:RadGridView>

This is my Xaml file...

How to select the row and getting values from selected row..
I'm using RelayCommand for select the row..

public RelayCommand RowSelectionCommand { get; set; }

       private void InitializeCommands()
       {
           RowSelectionCommand = new RelayCommand(() =>
           {
               RowSelectItem();
           });
       }

How to Bind the relaycommand in xaml file for selecting row... Pls Help Me..