C# into 关键字
csharpprogrammingserver side programming更新于 2025/9/15 3:11:00
使用 into 运算符在 select 子句中设置查询。
以下是包含员工详细信息的列表 −
IList<Employee> employee = new List<Employee>() {
new Employee() { EmpID = 1, EmpName = "Tom", EmpMarks = 90, Rank = 8} ,
new Employee() { EmpID = 2, EmpName = "Anne", EmpMarks = 60, Rank = 21 } ,
new Employee() { EmpID = 3, EmpName = "Jack", EmpMarks = 76, Rank = 18 } ,
new Employee() { EmpID = 4, EmpName = "Amy" , EmpMarks = 67, Rank = 20} ,
};
现在，使用 into 运算符获取以 k 结尾且排名为 <20 和 >5 的员工姓名。
var res = from e in employee where e.Rank > 5 where e.Rank < 20 select e into name where name.EmpName.EndsWith("k") select name;
让我们看一下完整的代码。
示例
using System;
using System.Linq;
using System.Collections.Generic;
public class Demo {
public static void Main() {
IList<Employee> employee = new List<Employee>() {
new Employee() { EmpID = 1, EmpName = "Tom", EmpMarks = 90, Rank = 8} ,
new Employee() { EmpID = 2, EmpName = "Anne", EmpMarks = 60, Rank = 21 } ,
new Employee() { EmpID = 3, EmpName = "Jack", EmpMarks = 76, Rank = 18 } ,
new Employee() { EmpID = 4, EmpName = "Amy" , EmpMarks = 67, Rank = 20} ,
};
// 获取以 k 结尾且排名为 <20 和 >5 的员工姓名
var res = from e in employee where e.Rank > 5 where e.Rank < 20 select e into name where name.EmpName.EndsWith("k") select name;
foreach (var emp in res) {
Console.WriteLine("Name: "+emp.EmpName);
Console.WriteLine("Marks: "+emp.EmpMarks);
}
}
}
public class Employee {
public int EmpID { get; set; }
public string EmpName { get; set; }
public int EmpMarks { get; set; }
public int Rank { get; set; }
}
输出
Name: Jack Marks: 76
