将2列存储到List中

Question

如何在List中存储来自2列(来自数据库)的数据

List<string> _items = new List<string>();

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Answer 1

您创建一个表示具有2列的行的类:

public class Foo
{
    // obviously you find meaningful names of the 2 properties

    public string Column1 { get; set; } 
    public string Column2 { get; set; }
}

然后你存储在List<Foo>:

List<Foo> _items = new List<Foo>();
_items.Add(new Foo { Column1 = "bar", Column2 = "baz" });

Answer 2

使用像KeyValuePair这样的元组结构

List<KeyValuePair<string, string>> _items = new List<KeyValuePair<string, string>>();
_items.Add(new KeyValuePair<string, string>(foo, bar));

Answer 3

我会用一堂课

 List<MyDataClass> _items = new List<MyDataClass>();

 public class MyDataClass
 {
     public string Value1 { get; set; }
     public string Value2 { get; set; }
 }

Answer 4

你还可以制作列表数组

List<string> [] list= new List<String> [];
list[0]=new List<string>();
list[1]=new List<string>();

list[0].add("hello");
list[1].add("world");