尝试填充ObservableCollection时出错

Question

Currently I'm trying to populate ObservableCollection but getting this error
is not of type "System.Int32" and cannot be used in this generic collection The Autocompletebox is populated with numbers, and when I try to select an item from the list the error is produced.

May I get some guidances towards where I'm going wrong.

public ObservableCollection<int> number = new ObservableCollection<int>();

public ObservableCollection<int> Number
{
    get { return value; }
    set
    {
        number = value;
        RaisePropertyChanged("Number");
    }
}
public ObservableCollection<PaymentInfo> Payments
    { get; set; }

xaml side:

<telerik:RadAutoCompleteBox
    SelectedItems="{Binding Number, Mode=TwoWay}" 
    SelectionMode="Multiple"
    ItemsSource="{Binding Payments}"  
    DisplayMemberPath="PaymentNo"      
    TextSearchPath="PaymentNo" />

Answer 1

Would define the following property

    public ObservableCollection<PaymentInfo> SelectedPayments
{
    get { return value; }
    set
    {
        number = value;
        RaisePropertyChanged("SelectedPayments");
    }
}

Bind it to SelectedItems="{Binding SelectedPayments, Mode=TwoWay}"