何时在同一类的静态构造函数之前访问类的静态成员

问题描述

我有一个公共类,并且有两个静态成员,我想使用一个静态构造函数设置这些静态成员的值。但是,即使在静态构造函数对其进行初始化之前,也要从.aspx页访问该成员。

关于如何防止这种情况以及使构造函数总是受到打击的任何投入。

为此添加一个小的代码参考:

 public class test
    {
        public string var1 ;
        public string Description;
        public string var2;
        public string var3;

        public static List<Feature> MasterFeatureList = new List<Feature>();
    
        static test()
        {
            try
            {
                if (MasterFeatureList.Count() == 0)
                {
                    using (IM5Context context = new M5Context())
                    {
                        MasterFeatureList = 
    new 

 FeatureRepository(context).GetAll().Where(x => x.Enabled == true).ToList();
                    }
                }

               
            }
            catch (System.Exception ex)
            {
                throw ex;
            }

        }

        public static Dictionary<Feature.Values,test> Features = new Dictionary<Feature.Values,test>()
            {
            {
                Feature.Values.xyz,new test { var1 = MasterFeatureList.Find(x=>x.Id==(int) Feature.Values.xyz).Name,Description = "",var2 = "xyz",var3 = "xyz" }
            },// i have multiple other feature to be initilaized 

上面的代码一个带有静态成员的静态构造函数,我在静态字典中使用它来初始化值。

解决方法

为了处理上述情况,而不是使用构造函数初始化静态主列表,我向静态函数添加了显式调用,该调用将初始化静态主列表,然后可以检查主列表是否具有使用该值的值

public static string SetName(int featureId)
{
    using (IM5Context context = new M5Context())
    {
        if (MasterFeatureList.Count() == 0)
        {
            MasterFeatureList = new xyzRepository(context).GetAll().Where(x => x.Enabled == true).ToList();                  
        }

        if (MasterFeatureList.Any(x => x.Id == featureId))
        {
            return MasterFeatureList.Find(x => x.Id == featureId).Name;
        }
        else
        {
             return  new FeatureRepository(context).GetById(featureId).Name;
        }                
    }
}

public static readonly Dictionary<Feature.Values,test> Features = new Dictionary<Feature.Values,test>()
{
    {
        Feature.Values.xyz,new test { ServiceName = SetName((int)Feature.Values.xyz),Description = "",KbUrl = "xyz",TemplateAppendix = "xyz" }
    },