Question

而不是手动设置对象中的每个布尔属性。我想使用反射为所有布尔属性执行此操作。

//For each boolean property: if any in collection is true, result is true.
private ActionFlagsViewModel StackActionFlagsViewModels(List<ActionFlagsViewModel> afList)
{
    var result = new ActionFlagsViewModel();
    foreach (var propInfo in typeof(ActionFlagsViewModel).GetProperties().Where(p => p.PropertyType == typeof(System.Boolean)))
    {
        // TODO: Do this using reflection for each property info.
        result.ShowActionAbort = afList.Where(afvm => afvm.ShowActionAbort == true).Any();
        result.ShowActionAssign = afList.Where(afvm => afvm.ShowActionAssign == true).Any();
    }
    return result;
}

这应该很容易吗？

Answer 1

这应该有效（在foreach内部）：

propInfo.SetValue(result, (from m in afList where (bool)propInfo.GetValue(m) select true).FirstOrDefault())

Answer 2



public ActionFlagsViewModel StackActionFlagsViewModels(List<ActionFlagsViewModel> afList)
    {
        var result = new ActionFlagsViewModel();
        foreach (var propInfo in typeof(ActionFlagsViewModel).GetProperties().Where(p => p.PropertyType == typeof(System.Boolean)))
        {
            propInfo.SetValue(result, (from m in afList where (bool)propInfo.GetValue(m) select true).FirstOrDefault());
            //propInfo.SetValue(result, afList.Where(afvm => Convert.ToBoolean(propInfo.GetValue(afvm)) == true).Any());
        }
        return result;
    }

这很有效！

这两个陈述都有效。但哪一个更好？

在LINQ语句中使用propertyinfo（reflection）的C＃

2 个答案: