使用反射将所有依赖项财产重置回默认值?

它应该是这样的:

使用一个简单的模型:

public class Employee
{
    public string FirstName { get; set; }

    public int Age { get; set; }
}

清除其财产的依赖对象

public class EmployeesDataGrid : DataGrid
{
    public static readonly DependencyProperty EmployeesProperty =
        DependencyProperty.Register("Employees", typeof(ObservableCollection<Employee>), typeof(EmployeesDataGrid), new PropertyMetadata(new ObservableCollection<Employee>()));

    public ObservableCollection<Employee> Employees
    {
        get { return (ObservableCollection<Employee>)GetValue(EmployeesProperty); }
        set { SetValue(EmployeesProperty, value); }
    }
}

在xaml中使用:

<local:EmployeesDataGrid x:Name="myGrid"/>

我在后面的代码中填写它(为了简单起见!)如下:

myGrid.Employees = new ObservableCollection<Employee>
{
     new Employee { Age = 20, FirstName = "John"},
     new Employee { Age = 30, FirstName = "Alex"}
};

在清除方法中:

foreach (FieldInfo field in depedencyObjectType.GetFields(BindingFlags.Static | BindingFlags.Public))
{
     if (field.FieldType == typeof (DependencyProperty))
     {
          var dp = field.GetValue(depedencyObject) as DependencyProperty;
          depedencyObject.ClearValue(dp);
     }
}

depedencyObject 是 myGrid

depedencyObjectType 是 depedencyObject.GetType()

如果要使用调试器查看 Employees 上的属性 我的网格 它显示 Count = 0 .