使用多列创建组合框UserControl

Question

我有多列组合框但我想在很多地方使用这些组合框。所以我想我需要创建组合框用户控件。但是问题是每个组合框的itemsource都不一样。

目前我的多列组合框

 <ComboBox Grid.Row="0"
                       Grid.Column="1"                       
                       Margin="2"
                      Width="150"
                    x:Name="cboemployee"
                      IsEditable="True"   
                     DisplayMemberPath="EmployeeID"
                    SelectedValuePath="EmployeeID" 
                    ItemsSource="{Binding  EmployeeList}">                   
                    <ComboBox.ItemContainerStyle>
                        <Style TargetType="{x:Type ComboBoxItem}" BasedOn="{StaticResource MetroComboBoxItem}">
                            <Setter Property="Template">
                                <Setter.Value>
                                    <ControlTemplate>
                                        <Grid Width="400" x:Name="gd">
                                            <Grid.ColumnDefinitions>
                                                <ColumnDefinition Width="100"/>
                                                <ColumnDefinition Width="300"/>
                                            </Grid.ColumnDefinitions>
                                            <TextBlock Margin="2" Grid.Column="0" Text="{Binding EmployeeID}"/>
                                            <TextBlock Margin="2" Grid.Column="1" Text="{Binding EmployeeName}"/>
                                        </Grid>
                                        <ControlTemplate.Triggers>
                                            <Trigger Property="ComboBoxItem.IsSelected" Value="True">
                                                <Setter TargetName="gd"  Property="Background" Value="{StaticResource AccentBaseColorBrush}"></Setter>
                                                <Setter TargetName="gd"  Property="TextElement.Foreground" Value="White"></Setter>
                                            </Trigger>
                                            <Trigger Property="ComboBoxItem.IsMouseOver" Value="True">
                                                <Setter TargetName="gd"  Property="Background" Value="{StaticResource AccentColorBrush}"></Setter>
                                                <Setter TargetName="gd"  Property="TextElement.Foreground" Value="White"></Setter>
                                            </Trigger>
                                        </ControlTemplate.Triggers>
                                    </ControlTemplate>
                                </Setter.Value>
                            </Setter>
                        </Style>
                    </ComboBox.ItemContainerStyle>                  
                </ComboBox>

我不确定我是否需要自定义组合框或组合框用户控件，请让我知道哪个最适合我的要求并绑定不同的项目来源？