Passing a property into a method to change that property

PropertyInfo 班级。我不能完全确定您的代码在做什么,但是反射性设置属性值的一般示例将是:

object targetInstance = ...; // your target instance

PropertyInfo prop = targetInstance.GetType().GetProperty(propertyName);

prop.SetValue(targetInstance, null, newValue);

You could, however, pass an Action<T> 相反,如果您知道代码中某个点的属性。例如:

YourType targetInstance = ...;

Action<PropertyType> prop = value => targetInstance.PropertyName = value;

... // in your consuming code

prop(newValue);

或者,如果你知道它的类型,当你调用它,但是你没有这个实例,你可以把它变成一个 Action<YourType, PropertyType> . This also would prevent creating a closure.

Action<YourType, PropertyType> prop = (instance, value) => instance.PropertyName = value;

... // in your consuming code

prop(instance, newValue);

Action<object> and cast it to the proper property type within the lambda, but this should work either way.

You have a couple of choices:

1. Use reflection. Store and pass a PropertyInfo object into the method and set it's value through reflection.
2. 创建一个具有该属性的闭包的ActualDe委托,并将其传递到方法中。

可以使用反射获得类的属性:

var properties = obj.GetType().GetProperties();

foreach (var property in properties)
{
  //read / write the property, here... do whatever you need
}