问如何在Xamarin中将BindingBase属性绑定到变量

EN

您可以将绑定存储在变量中，如下所示：

BindingBase paymentPlanEndingBinding = new Binding("IsPaymentPlanEnding");

然后在进行实际绑定时引用它：

highlightGrid.SetBinding(IsVisibleProperty, paymentPlanEndingBinding);

为此，我编写了一个简单的单元测试：

[Test]
public void BindingBase_test()
{
    MockForms.Init();

    BindingBase binding = new Binding("Value");

    var pickerItem = new PickerSearchItem {Value = "the_value"};

    var label = new Label {BindingContext = pickerItem};
    label.SetBinding(Label.TextProperty, binding);
    
    label.Text.ShouldBe("the_value");
}

您的BindingContext需要实现INotifyPropertyChanged。BindingContext应该包含一个名为IsPaymentPlanEnding的属性(类型为bool)。然后，您只需保留该行的原样：highlightGrid.SetBinding(IsVisibleProperty, "IsPaymentPlanEnding");

了解Bindings