c# - 如何检查属性 setter 是否公开

Question

给定一个 PropertyInfo 对象，我如何检查该属性的 setter 是否公开？

Answer 1

检查您从 GetSetMethod 返回的内容:

MethodInfo setMethod = propInfo.GetSetMethod();

if (setMethod == null)
{
    // The setter doesn't exist or isn't public.
}

或者，对 Richard's answer 进行不同的旋转:

if (propInfo.CanWrite && propInfo.GetSetMethod(/*nonPublic*/ true).IsPublic)
{
    // The setter exists and is public.
}

请注意，如果您只想设置一个属性，只要它有一个 setter，您实际上不必关心 setter 是否是公共(public)的。您可以直接使用它，公共(public)或私有(private):

// This will give you the setter, whatever its accessibility,
// assuming it exists.
MethodInfo setter = propInfo.GetSetMethod(/*nonPublic*/ true);

if (setter != null)
{
    // Just be aware that you're kind of being sneaky here.
    setter.Invoke(target, new object[] { value });
}