Question

我有一个int类型的词典，myclass。在myclass中，我有以下属性：字符串，int和字符串数组。

当我将数据保存在字典中时，Evrything工作正常。但我现在想要查看字典，如果在myclass中有一个值，位于字符串数组。并过滤它们。例如，过滤掉Array＆＃34; German＆＃34;中包含的每个对象。是否有可能这样做？

MyClass的：

  public class MYCLASS
    {
        public int ID
        {
            get;
            set;
        }

        public string Specialty
        {
            get;
            set;
        }

        public string[] Language
        {
            get;
            set;
        }

 public myclass(int id, string specialty, string[] language)
        {
            this.Language= language;
            this.ID= id;
            this.Specialty = specialty;
        }

}

我的词典

Dictionary<int, myclass> objdict= new Dictionary<int, myclass>();

Answer 1

是的，搜索字典的值，然后过滤掉数组

var dict = new Dictionary<int, MYCLASS>();
var filteredPairs = from pair in dict
                    where !pair.Value.Language.Contains("German")
                    select pair;

Answer 2

如果我理解你的问题，如果你有一个班级：

public class Country
{
    public string CountryName { get; set; }
    public int CountryId { get; set; }
    public string[]  States { get; set; }
}

如果您有字典：

 Dictionary<int, Country> dict = new Dictionary<int, Country>()
 {
     {1,new Country(){ CountryId=1,CountryName="Test1", States=new [] {"State1","State2","State3" }}},
     {2,new Country(){ CountryId=1,CountryName="Test2", States=new []{"State11","State21","State31" }}},
     {3,new Country(){ CountryId=1,CountryName="Test3", States=new []{"State12","State2","State31" }}},
     {4,new Country(){ CountryId=1,CountryName="Test4", States=new []{"Stae112","State21","State31" }}},
  };

然后您可以使用Where

过滤它

 IEnumerable<KeyValuePair<int,Country>> enumerable=  dict.Where(x=>x.Value.States.Contains("State21",StringComparer.OrdinalIgnoreCase));

Answer 3

使用LINQ是最好的选择。如果你想在常规循环中访问你的类，它将是这样的：

        foreach (KeyValuePair<string, MYCLASS> entry in MyDic)
        {
            // Value is in: entry.Value and key in: entry.Key
            foreach(string language in ((MYCLASS)entry.Value).Language)
            {
                //Do sth with next language...
            }
        }

Answer 4

您可以使用LINQ表达式查找与您的查询匹配的记录：

var dictionary = new Dictionary<int, MYCLASS>();
var results = dictionary.Where(record => !record.Value.Language.Any("German"));

如何获得字典的具体值

4 个答案: