访问私有成员的方法-------C# 转载

  1、得到私有字段的值：

public static T GetPrivateField<T>(this object instance, string fieldname)
{
    BindingFlags flag = BindingFlags.Instance | BindingFlags.NonPublic;
    Type type = instance.GetType();
    FieldInfo field = type.GetField(fieldname, flag);
    return (T)field.GetValue(instance);
}2、得到私有属性的值：

public static T GetPrivateProperty<T>(this object instance, string propertyname)
{
    BindingFlags flag = BindingFlags.Instance | BindingFlags.NonPublic;
    Type type = instance.GetType();
    PropertyInfo field = type.GetProperty(propertyname, flag);
    return (T)field.GetValue(instance, null);
}3、设置私有成员的值：

public static void SetPrivateField(this object instance, string fieldname, object value)
{
    BindingFlags flag = BindingFlags.Instance | BindingFlags.NonPublic;
    Type type = instance.GetType();
    FieldInfo field = type.GetField(fieldname, flag);
    field.SetValue(instance, value);
}
4、设置私有属性的值：
public static void SetPrivateProperty(this object instance, string propertyname, object value)
{
    BindingFlags flag = BindingFlags.Instance | BindingFlags.NonPublic;
    Type type = instance.GetType();
    PropertyInfo field = type.GetProperty(propertyname, flag);
    field.SetValue(instance, value, null);
}
5、调用私有方法：

public static T CallPrivateMethod<T>(this object instance, string name, params object[] param)
{
    BindingFlags flag = BindingFlags.Instance | BindingFlags.NonPublic;
    Type type = instance.GetType();
    MethodInfo method = type.GetMethod(name, flag);
    return (T)method.Invoke(instance, param);
}