How to disable input for date picker WPF C#

Question

Is there any way to disable the users from manually typing in date into DatePicker field

 

but it should be able to pick a date by clicking the picker button

 

the XAML:

 

<DatePicker x:Name="DeliveryDate" VerticalAlignment="Center" SelectedDateFormat="Long" SelectedDate="{Binding DeliveryDate, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged }" />

 

Thanks,