ListView in Combobox Dropdown

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C#

WPF

I want to Create a Customized Combobox by extending the WPF Combobox. I like to create a template for it
On the DropDown of the combobox it must have
1) Listview
2) Button
Help me to create that

I tried like this
Created a xaml file to create a template

<Style TargetType="ComboBoxItem" x:Name="CombowithList">
        <Setter Property="ContentTemplate">
            <Setter.Value>
                <DataTemplate>
                    <Border>
                        <ScrollViewer>
                            <ListView x:Name="lvMainList" Width="400" Height="70">
                                <ListView.View>
                                    <GridView>
                                        <GridViewColumn Header="Name" Width="150" DisplayMemberBinding="{Binding Name}"/>
                                        <GridViewColumn Header="Place" Width="150" DisplayMemberBinding="{Binding Place}"/>
                                        <GridViewColumn Header="ID" Width="100" DisplayMemberBinding="{Binding ID}"/>
                                    </GridView>
                                </ListView.View>
                            </ListView>
                        </ScrollViewer>
                    </Border>
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>

And Created a class to access this style

public class GOGWPFFilterCombo : System.Windows.Controls.ComboBox
    { 
public GOGWPFFilterCombo()
        

this.ItemContainerStyle = this.FindResource("CombowithList") as System.Windows.Style;

            _dtToBind = new System.Data.DataTable();
            _dtToBind.Columns.Add("Name");
            _dtToBind.Columns.Add("Place");
            _dtToBind.Columns.Add("ID");

            System.Data.DataRow dr = _dtToBind.NewRow();
            dr["Name"] = "James";
            dr["Place"] = "USA";
            dr["ID"] = "121";
            _dtToBind.Rows.Add(dr);
            this.ItemsSource = _dtToBind.DefaultView;}
}
}

This is the Sample Code am trying; It is only on progress now