ComboBox 根据对象选择项目

Question

so im doing like a little Customer Management programm, just for learning purpose.

I have a class "Customer" which contains: Name, LastName, Age, Gender and some more. Im Loading my Data from a Json file and im populating an Observable Collection with it. Now as my Screenshot shows below, i want a combobox which displays the Gender of my Selected Customer and its kinda working. the Problem is that the ComboBox has as many options to chose from as i got Customers in my Observable Collection. So i want to edit the Gender from my selected Customer with my Combobox, therefore it should only have 2 Options to chose from: Male, Female.

XAML:

Binding Path Customers is the name of my Observable Collection.

<ComboBox x:Name="ComboBoxGender" 
                          ItemsSource="{Binding Path=Customers}"
                          DisplayMemberPath="Gender"
                          SelectedValuePath="Gender"
                          SelectedValue="{Binding Path=SelectedCustomer.Gender}"
                          Grid.Row="3" HorizontalAlignment="Right" 
                          VerticalAlignment="Center" 
                          Height="20" Width="130" Margin="0,0,5,0">
                </ComboBox>

Thanks for your help! (sorry for my bad grammar..)

Answer 1

So i got it running fine now. I Changed my Customer Class:

int Age {get; set;}
....
public Gender _Gender { get; set; }

public enum Gender
{
   Male, Female
}

And i changed my XAML:

<ComboBox x:Name="ComboBoxGender"
                          ItemsSource="{Binding Genderlist}"
                          DisplayMemberPath="_Gender"
                          SelectedValuePath="_Gender"                       
                          SelectedValue="{Binding SelectedCustomer._Gender}"
                          Grid.Row="3" HorizontalAlignment="Right" 
                          VerticalAlignment="Center" 
                          Height="20" Width="130" Margin="0,0,5,0">
                </ComboBox>

My Itemssource is:

private ObservableCollection<Customer> _genders = new ObservableCollection<Customer>();

public MainModel()
        {
            _genders.Add(new Customer { _Gender = Customer.Gender.Herr });
            _genders.Add(new Customer { _Gender = Customer.Gender.Frau });
        }

Now its working fine, just for someone who has the same problem in the future :)