Question

如何编写遍历我的项目的反射代码，并查找具有特殊属性的类，并能够收集2条信息：ClassName.PropertyName和传递到属性内的ResourceManager.GetValue的字符串。我的代码如下。请帮忙。感谢

    [TestMethod]
    public void TestMethod1()
    {

        Dictionary<string, string> mydictionary = new Dictionary<string, string>();
        mydictionary = ParseAllClassesWithAttribute("MyAttribute");

        Assert.AreEqual(mydictionary["MyClass.FirstNameIsRequired"].ToString(), "First Name is Required");


    }

    private Dictionary<string, string> ParseAllClassesWithAttribute(string p)
    {
        Dictionary<string,string> dictionary = new Dictionary<string, string>();

        // use reflection to go through the class that is decorated by attribute MyAttribute
        // and is able to extract ClassName.PropertyName along with what is Inside
        // GetValue method parameter.
        // In the following I am artificially populating the dictionary object.

        dictionary.Add("MyClass.FirstNameIsRequired", "First Name is Required");
        return dictionary;
    }



     [MyAttribute]
     public class MyClass
        {
            public string FirstNameIsRequired
            {
                get
                {
                    return ResourceManager.GetValue("First Name is required");
                }
            }
        }

        public static class ResourceManager
        {
            public static string GetValue(string key)
            {
                return String.Format("some value from the database based on key {0}",key);
            }
        }

Answer 1

反射无法提取"First Name is Required"值，除非您获取IL字节并解析它们。这是一个潜在的解决方案：

[AttributeUsage(AttributeTargets.Property)]
public class MyAttribute : Attribute
{
    public string TheString { get; private set; }
    public MyAttribute(string theString)
    {
        this.TheString = theString;
    }
}

const string FirstNameIsRequiredThing = "First Name is required";
[MyAttribute(FirstNameIsRequiredThing)]
public string FirstNameIsRequired
{
    get
    {
        return ResourceManager.GetValue(FirstNameIsRequiredThing);
    }
}

现在，您可以使用MyAttribute阅读所有属性并查看预期值。（如果您在使用此部分时遇到问题，请务必遵循您对问题的评论意见）

反映某些属性的类

1 个答案: