查找两个.NET DataTable的交集

using System;
using System.Data;
using System.Linq;

class Program
{
    static void Main()
    {
        DataTable table1 = new DataTable();
        DataTable table2 = new DataTable();

        // 填充 DataTable 数据
        // ...

        var intersection = table1.AsEnumerable()
            .Join(table2.AsEnumerable(), 
                row1 => row1.Field<int>("ID"), 
                row2 => row2.Field<int>("ID"), 
                (row1, row2) => row1);

        DataTable result = intersection.CopyToDataTable();

        // 使用交集结果进行后续操作
        // ...
    }
}