C# LINQ的 字串比對-大於與小於

  • 17013
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  • LINQ
  • 2009-02-05

C# 在字串上使用>,<等運算時,會拋出編譯錯誤的訊息,

 

 C# 在字串上使用>,<等運算時,會拋出編譯錯誤的訊息,

可改寫如下:

 

static void Test2()
{
            DataClasses1DataContext context = new DataClasses1DataContext();
            var result = from s1 in context.Customers where  
                          s1.CustomerID.CompareTo("VINET") >= 0 &&
                          s1.CustomerID.CompareTo("WAVIN") <= 0
                         select s1;
            foreach (var item in result)
            {
                Console.WriteLine(item.CustomerID);
            }

            Console.ReadLine();
}

CompareTo的回傳值為: 大於回傳1,小於回傳-1,等於回傳0,

所以>=0,即為大於等於VINET