在.NET 3.5列表中搜索,该列表类似于中的SQL列(value1,value2,…,valuen)

有几种方法,下面是一个简单的例子:

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            List<ColumnDiff> columnDiffs = new List<ColumnDiff>();
            columnDiffs.AddRange(new[]  {
                                             new ColumnDiff(){columnName="Aa"}
                                            ,new ColumnDiff(){columnName="A"}
                                            ,new ColumnDiff(){columnName="B"}
                                            ,new ColumnDiff(){columnName="Bb"}
                                            ,new ColumnDiff(){columnName="C"}
                                            ,new ColumnDiff(){columnName="Cc"}
                                        });

            bool hasItems = columnDiffs.Exists(x => x.columnName == "A" || x.columnName == "B" || x.columnName == "C");
            hasItems = columnDiffs.Any(x => x.columnName == "A" || x.columnName == "B" || x.columnName == "C");
            hasItems = columnDiffs.FirstOrDefault(x => x.columnName == "A" || x.columnName == "B" || x.columnName == "C") != null;

            Console.ReadKey();
        }
    }

    public class ColumnDiff
    {
        public string columnName;
        public string leftValue;
        public string rightValue;
    }
}

也许这就是你需要的:

var searchList = new[] {"A", "B", "C"};
var result = columnDiffList.Where(i => searchList.Any(j => j == i.columnName));

因此,首先定义要搜索的内容的列表,然后使用它对列表(columndiflist)进行搜索。

var res = from c in columnDiffList where c.columnName == "A" || c.columnName == "B" select c;