WPF Datagrid - Adding Events to columns

Hi

I am having a problem with my datagrid.
I need to add an enevt to my column so that when the user selects one ot the 3 checkboxes, the remaining 2 get unchecked

here is the code

Code:

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    <Grid Height="287" Width="424">
        <Border BorderThickness="10" BorderBrush="CadetBlue" CornerRadius="45" MouseRightButtonDown="Border_MouseRightButtonDown" MouseLeftButtonDown="Border_MouseLeftButtonDown" Margin="2,0,40,0">
        <Border.Background>
            <SolidColorBrush Color="white" />
        </Border.Background>
        <my:DataGrid Margin="8,0,8,10" Name="DataGrid1"  AutoGenerateColumns="False" ItemsSource="{Binding}" RowDetailsVisibilityMode="Visible" Height="207" Width="335">
                <my:DataGrid.Columns>
                    <my:DataGridTextColumn Header="Home" Binding="{Binding Path=home}"/>
                    <my:DataGridCheckBoxColumn Header="H" Binding="{Binding Path=hw}"  Mouse.MouseUp="DataGridCheckBoxColumn_MouseUp"/>
                    <my:DataGridCheckBoxColumn Header="D" Binding="{Binding Path=draw}"/>
                    <my:DataGridCheckBoxColumn Header="A" Binding="{Binding Path=awayw}"/>
                    <my:DataGridTextColumn Header="Away" Binding="{Binding Path=away}"/>
                    <my:DataGridTextColumn Header="Time" Binding="{Binding Path=heurematch}"/>
                </my:DataGrid.Columns>
            </my:DataGrid>
        </Border>
        <Button Height="23" Margin="132,0,182,16" Name="Button1"  VerticalAlignment="Bottom">Valider</Button>
    </Grid>

  ConnectDatabase()

        Dim cmd As New MySql.Data.MySqlClient.MySqlCommand("SELECT id, DATEDIFF(date_limite, NOW()) as reste,DATE_FORMAT( date_limite, '&#37;D %M %Y') as date_limite, competition_name FROM competition_public WHERE idsport=1 And idchampionnat=15  ORDER BY reste LIMIT 0,1;", conn)
        Dim dat As MySql.Data.MySqlClient.MySqlDataReader
        Dim idCompet As Integer

        dat = cmd.ExecuteReader
        Do While dat.Read()
            idCompet = IIf(dat("id") <> 0, dat("id"), 0)
        Loop
        dat.Close()

        Dim sql As New MySql.Data.MySqlClient.MySqlCommand
        'Dim query = "SELECT c1.equipe as home, c1.id as homeId, c2.equipe as away, c2.id as awayId, matchs.heurematch, matchs.id as idM FROM competition_public_match AS compet "
        'query &= " INNER JOIN matchs_soccer AS matchs ON matchs.id=compet.idmatch "
        'query &= " INNER JOIN clubs as c1 ON c1.id=matchs.h_id And c1.idsport=1 "
        'query &= " INNER JOIN clubs as c2 ON c2.id=matchs.v_id And c2.idsport=1 "
        'query &= " WHERE compet.idcompetition = " & idCompet

        Dim query = "SELECT c1.equipe as home, 0 as hw,0 as awayw,0 as draw,c2.equipe as away, matchs.heurematch FROM competition_public_match AS compet "
        query &= " INNER JOIN matchs_soccer AS matchs ON matchs.id=compet.idmatch "
        query &= " INNER JOIN clubs as c1 ON c1.id=matchs.h_id And c1.idsport=1 "
        query &= " INNER JOIN clubs as c2 ON c2.id=matchs.v_id And c2.idsport=1 "
        query &= " WHERE compet.idcompetition = " & idCompet

        sql.CommandText = query
        sql.Connection = conn
        'Dim sqlD As MySql.Data.MySqlClient.MySqlDataReader = sql.ExecuteReader
        Dim ds As New System.Data.DataSet
        Dim sqla As New MySql.Data.MySqlClient.MySqlDataAdapter

        sqla.SelectCommand = sql
        sqla.Fill(ds, "users")
        Dim w3 As New grille

        Dim x As Integer
        Dim myMusic As New ObservableCollection(Of match)()
        For x = 0 To ds.Tables("users").Rows.Count - 1
            myMusic.Add(New match(ds.Tables("users").Rows(x)("home"), ds.Tables("users").Rows(x)("hw"), ds.Tables("users").Rows(x)("draw"), ds.Tables("users").Rows(x)("awayw"), ds.Tables("users").Rows(x)("away"), ds.Tables("users").Rows(x)("heurematch")))
        Next

        m_orders = ds.Tables("users")
        w3.DataGrid1.ItemsSource = myMusic

        w3.Show()

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thanking you in anticipation