尝试填充ObservableCollection时出错

Question

目前，我正在尝试填充ObservableCollection，但出现此错误
is not of type "System.Int32" and cannot be used in this generic collection 。自动完成框用数字填充，当我尝试从列表中选择一个项目时，会产生错误。

我可以得到一些有关我要去哪里出错的指导。

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面：

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

Answer 1

将定义以下属性

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

将其绑定到SelectedItems="{Binding SelectedPayments, Mode=TwoWay}"