在C#中，LINQ（Language Integrated Query）是一个强大的工具，可以轻松地对数据进行排序、过滤和操作。在本文中，我们将演示如何使用LINQ根据员工的薪水和部门对员工列表进行排序。
使用LINQ根据工资和部门对员工列表进行排序
To sort a list of employees based on their salary and department using LINQ, you can follow the steps below −
1. Create a Class to Represent an Employee
public class Employee {
public string Name { get; set; }
public int Salary { get; set; }
public string Department { get; set; }
}
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2. Create a List of Employees
List employees = new List {
new Employee { Name = "John", Salary = 50000, Department = "ABC" },
new Employee { Name = "Mary", Salary = 60000, Department = "DEF" },
new Employee { Name = "Bob", Salary = 40000, Department = "ABC" },
new Employee { Name = "Alice", Salary = 70000, Department = "XYZ" }
};
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3. Use LINQ to Sort the List of Employees by Salary and Department
var sortedEmployees = employees
.Where(e => e.Department == "ABC")
.OrderByDescending(e => e.Salary)
.ThenBy(e => e.Name);
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4. Iterate through the Sorted List and Print out each Employee's Name and Salary
foreach (var employee in sortedEmployees) {
Console.WriteLine($"{employee.Name}: {employee.Salary}");
}
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Explanation
的中文翻译为：
解释
Step 1 - 我们定义一个名为Employee的类来表示一个员工。这个类有三个属性：Name（姓名），Salary（薪水）和Department（部门）。
Step 2 - We create a list of employees and initialize it with some sample data.
步骤 3 - 我们使用 LINQ 对员工列表按照薪水和部门进行排序。我们首先筛选出部门为“ABC”的员工，然后按照薪水降序和姓名升序对筛选后的列表进行排序。结果是一个满足筛选条件的员工排序列表。
第四步 - 我们遍历已排序的员工列表，并使用字符串插值打印出每个员工的姓名和薪水。
示例
using System;
using System.Collections.Generic;
using System.Linq;
public class Employee {
public string Name { get; set; }
public int Salary { get; set; }
public string Department { get; set; }
}
class Program {
static void Main(string[] args) {
List employees = new List {
new Employee { Name = "John", Salary = 50000, Department = "ABC" },
new Employee { Name = "Mary", Salary = 60000, Department = "DEF" },
new Employee { Name = "Bob", Salary = 40000, Department = "ABC" },
new Employee { Name = "Alice", Salary = 70000, Department = "XYZ" }
};
var sortedEmployees = employees
.Where(e => e.Department == "ABC")
.OrderByDescending(e => e.Salary)
.ThenBy(e => e.Name);
foreach (var employee in sortedEmployees) {
Console.WriteLine($"{employee.Name}: {employee.Salary}");
}
}
}
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输出
John: 50000
Bob: 40000
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Conclusion
使用LINQ根据工资和部门对员工列表进行排序是C#中操作数据的一种简单高效的方式。通过使用LINQ，您可以仅仅使用几行代码就可以轻松地过滤、排序和操作大量的数据。我们希望本文能帮助您理解如何使用LINQ根据工资和部门对员工列表进行排序。
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