Combobox items populate from dataset in datagrid columtemplate

Hi

I have added 2 dataset to datasource with tables  tblEmployee and tblEmployeeName. I have created datagrid from tblEmployee table and I have in datagrid combobox where I would like to show employee name list from tblEmployeeName table.

<DataGridTemplateColumn x:Name="employeeColumn" Header="Employee" Width="SizeToHeader" >
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <ComboBox >
                                <ComboBoxItem/>
                            </ComboBox>
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>

How I can show list in combobox and also bind to tblEmployee table.

Please help.

Thank you

Luke