WPF MVVM 绑定ComboBox数据_mvvm中点击按钮更新combox绑定值

一、属性变更基类 NotificationBase.cs

    public class NotificationBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
 
        public void NotifyPropertyChanged(string propertyName)
        {
            if (this.PropertyChanged != null)
            {
                this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }

    [DataContract]
    public abstract class BaseModel : NotificationBase
    {
 
    }

二、ViewModel层

    public class PageBuildProductsModel : BaseModel
    {


        //产品列表
        private List<ProductsModel> productslist;
        public List<ProductsModel> ProductsList
        {
            get { return productslist; }
            set
            {
                productslist = value;
                NotifyPropertyChanged("ProductsList");
            }
        }
        //选中产品
        public ProductsModel CurrentProducts { get; set; }  


        public PageBuildProductsModel()
        {


            ProductsList = new List<ProductsModel>();
            foreach (.....)
            {
                ProductsList.Add(......);
            }

            this.CurrentProducts = this.ProductsList[0]; 
        }

        private void Build(object obj)
        {

            //获取选中的值
            MessageBox.Show(CurrentProducts.Queries);
        }
    }

三、View 

<ComboBox ItemsSource="{Binding ProductsList}" 

Width="100" 

DisplayMemberPath="Name" 

SelectedItem="{Binding CurrentProducts, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>

注意：当前选项，绑定CurrentProducts