using System;
using System.Collections.Generic;
using System.Data;
// 定义数据模型类
public class Person
{
public int Id { get; set; }
public string Name { get; set; }
public int Age { get; set; }
public DateTime BirthDate { get; set; }
public decimal Salary { get; set; }
public bool IsActive { get; set; }
}
class Program
{
static void Main()
{
// 1. 创建测试数据 List
List<Person> peopleList = new List<Person>
{
new Person { Id = 1, Name = "张三", Age = 30, BirthDate = new DateTime(1993, 5, 15), Salary = 5000.50m, IsActive = true },
new Person { Id = 2, Name = "李四", Age = 25, BirthDate = new DateTime(1998, 8, 20), Salary = 4500.75m, IsActive = true },
new Person { Id = 3, Name = "王五", Age = 35, BirthDate = new DateTime(1988, 3, 10), Salary = 6000.00m, IsActive = false }
};
// 2. 将 List 转换为 DataTable
DataTable peopleTable = ConvertListToDataTable(peopleList);
// 3. 显示结果
DisplayDataTable(peopleTable);
}
/// <summary>
/// 使用手动映射将 List<Person> 转换为 DataTable
/// </summary>
public static DataTable ConvertListToDataTable(List<Person> peopleList)
{
// 创建 DataTable
DataTable dataTable = new DataTable("People");
// 手动创建列（定义表结构）
dataTable.Columns.Add("ID", typeof(int));
dataTable.Columns.Add("姓名", typeof(string));
dataTable.Columns.Add("年龄", typeof(int));
dataTable.Columns.Add("生日", typeof(DateTime));
dataTable.Columns.Add("薪资", typeof(decimal));
dataTable.Columns.Add("是否激活", typeof(bool));
// 如果传入的列表为空或null，返回空表
if (peopleList == null || peopleList.Count == 0)
return dataTable;
// 手动映射每一行数据
foreach (Person person in peopleList)
{
// 创建新行
DataRow row = dataTable.NewRow();
// 手动映射每个属性到对应的列
row"ID" = person.Id;
row"姓名" = person.Name;
row"年龄" = person.Age;
row"生日" = person.BirthDate;
row"薪资" = person.Salary;
row"是否激活" = person.IsActive;
// 将行添加到表中
dataTable.Rows.Add(row);
}
return dataTable;
}
/// <summary>
/// 显示 DataTable 的内容（用于验证）
/// </summary>
public static void DisplayDataTable(DataTable dataTable)
{
Console.WriteLine("DataTable 内容:");
Console.WriteLine("=========================================");
// 显示列头
foreach (DataColumn column in dataTable.Columns)
{
Console.Write($"{column.ColumnName,-10} ");
}
Console.WriteLine();
Console.WriteLine(new string('-', 70));
// 显示数据行
foreach (DataRow row in dataTable.Rows)
{
Console.WriteLine($"{row"ID",-10} {row"姓名",-10} {row"年龄",-10} {((DateTime)row"生日").ToString("yyyy-MM-dd"),-12} {row"薪资",-10} {row"是否激活",-10}");
}
}
}