字典<string, List<PropertyInfo>> 中的 IDataErrorInfo 验证属性以获取更多模型即 PersonModel、CityModel

问题描述

我是 C# 开发新手，我正在尝试从更多模型的字典中读取所有 PropertyInfo

这是理论：

• 声明一个字典
• 当前类型键存储为字符串，然后存储相应的 PropertyInfos。
• 如果字典为空，则初始化。
• 之后，我使用 GetType() 获取当前类型。
• 检查字典是否包含这个键。如果密钥不存在，则会添加新条目。

人物模型

        /// <summary>
        /// The firstname of the person.
        /// </summary>
        [required(AllowEmptyStrings = false,ErrorMessage = "First name must not be empty.")]
        [MaxLength(20,ErrorMessage = "Maximum of 20 characters is allowed.")]
        public string FirstName { get; set; }

        /// <summary>
        /// The lastname of the person.
        /// </summary>
        [required(AllowEmptyStrings = false,ErrorMessage = "Last name must not be empty.")]
        [MaxLength(30,ErrorMessage = "Maximum of 30 characters is allowed.")]
        public string LastName { get; set; }

        /// <summary>
        /// The city where the person is living
        /// </summary>
        [required(AllowEmptyStrings = false,ErrorMessage = "City must not be empty.")]
        public string City { get; set; }

城市模型

        /// <summary>
        /// unique ID at the database
        /// </summary>
        [required(AllowEmptyStrings = false,ErrorMessage = "City identifier must not be empty.")]
        public string CityID { get; set; }

        /// <summary>
        /// The city where the person is living
        /// </summary>
        [required(AllowEmptyStrings = false,ErrorMessage = "City must not be empty.")]
        public string City { get; set; }

基础模型

private static readonly Dictionary<string,List<PropertyInfo>> getPropertyInfos = new Dictionary<string,List<PropertyInfo>>();

    /// <summary>
    /// defines Dictionary<string,List<PropertyInfo>> for PropertyInfos
    /// </summary>
    private static Dictionary<string,List<PropertyInfo>> GetPropertyInfos()
    {
    // Dictionary will be initilized
        List<PropertyInfo> listPropertyInfo = getPropertyInfos.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly)
                                           .Where(prop => prop.IsDefined(typeof(requiredAttribute),true) || prop.IsDefined(typeof(MaxLengthAttribute),true))
                                           .ToList();
        if (!getPropertyInfos.ContainsKey(getPropertyInfos.GetType().Name))
        {
            Dictionary<string,object> addResult2Dictionary = listPropertyInfo.ToDictionary(propertyInfo => propertyInfo.Name,propertyInfo => propertyInfo.GetValue(getPropertyInfos));
        }
        return getPropertyInfos;
    }

有人知道我还能做什么吗？

解决方法

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