获取和设置属性

基本用法：

PropertyInfo prop = myInstance.GetType().GetProperty("myProperty");
// get the value myInstance.myProperty
object value = prop.GetValue(myInstance);

int newValue = 1;
// set the value myInstance.myProperty to newValue
prop.setValue(myInstance, newValue);

设置只读自动实现的属性可以通过它的后备字段完成（在 .NET Framework 名称的支持字段是“k__BackingField”）：

// get backing field info
FieldInfo fieldInfo = myInstance.GetType()
    .GetField("<myProperty>k__BackingField", BindingFlags.Instance | BindingFlags.NonPublic);

int newValue = 1;
// set the value of myInstance.myProperty backing field to newValue
fieldInfo.SetValue(myInstance, newValue);