WPF 后台手动改变数据绑定对象的属性，为什么前台绑定控件不更新？

[Comic-Con]

小弟刚接触wpf，遇到一个可能比较小白的问题，希望大家给看看，新手分不多。
直接上代码了。

public class TestBindingClass
        {
            public int Count { get; set; }
        }
public TestBindingClass MyTestBindingClass;

public MainWindow()
        {
            InitializeComponent();
            MyTestBindingClass = new TestBindingClass()
            {
                Count = 0
            };
            txtBinding.DataContext = MyTestBindingClass;
        }

private void Btn_TestBinding_Click(object sender, RoutedEventArgs e)
        {
            MyTestBindingClass.Count++;
        }

<Button Content="TestBinding" Name="Btn_TestBinding" Click="Btn_TestBinding_Click" Margin="10"></Button>
<TextBox Name="txtBinding" Text="{Binding Count,Mode=TwoWay}" Width="100" Margin="10"></TextBox>

后台手动改变绑定对象的属性，为什么前台控件不更新呢？

[qq14923349]

继承inotifypropertychanged

[qq14923349]

请属性继承inotifypropertychanged

mvvm

[OrdinaryCoder]

public class Class1:INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private int age = 10;
 
        public int Age
        {
            get { return age; }
            set 
            {
                age = value;
                if (PropertyChanged != null)            
                {              
                    PropertyChanged(this, new PropertyChangedEventArgs("Age"));//对Age进行监听      
                }
 
            }
        }
    }

这样

[Comic-Con]

引用 3 楼 OrdinaryCoder 的回复:

public class Class1:INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        private int age = 10;
 
        public int Age
        {
            get { return age; }
            set 
            {
                age = value;
                if (PropertyChanged != null)            
                {              
                    PropertyChanged(this, new PropertyChangedEventArgs("Age"));//对Age进行监听      
                }
 
            }
        }
    }

这样

嗯嗯，确实是个小白问题，已经解决了。