<DataGrid Grid.Column="1" Name="Info_DG" FontSize="18" CellEditEnding="Info_DG_CellEditEnding" >
            <DataGrid.Columns>
                <DataGridTextColumn Binding="{Binding BM}"/>
                <DataGridTextColumn Binding="{Binding BC}"/>
                <DataGridTemplateColumn>
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <Button Click="Button_Click"></Button>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>

MyObject obj = ((FrameworkElement)sender).DataContext as MyObject;


object ID = ((Button)sender).CommandParameter;