LINQ to SQL支持以下String方法.但是不同的是默认情况下System.String方法区分大小写.而SQL则不区分大小写. 1.字符串串联(String Concatenation) var q = from c in db.Customers select new { c.CustomerID, Location = c.City + ", " + c.Country }; 语句描述:这个例子使用+运算符在形成经计算得出的客户Location值过程中将字符串字段和字符串
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Func<string, double, double> funDelegate = CustomCo
using System.Linq; List<string> ListA = new List<string>(); List<string> ListB = new List<string>(); List<string> ListResult = new List<string>(); ListResult = ListA.Distinct().ToList();//去重 ListResult =
1. 查询Student表中的所有记录的Sname.Ssex和Class列.select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS }Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SSEX,CLASS
using System.Linq; List<string> ListA = new List<string>(); List<string> ListB = new List<string>(); List<string> ListResult = new List<string>(); ListResult = ListA.Distinct().ToList();//去重 ListResult = ListA.Except(Li
SQL.LINQ.Lambda 三种用法颜色注释: SQL LinqToSql Lambda QA1. 查询Student表中的所有记录的Sname.Ssex和Class列.select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS }Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SS
原文链接:http://www.cnblogs.com/mr-hero/p/3532631.html SQL LinqToSql Lambda 1. 查询Student表中的所有记录的Sname.Ssex和Class列.select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS }Lambda
SQL LinqToSql Lambda 1. 查询Student表中的所有记录的Sname.Ssex和Class列.select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS }Lambda: Students.Select( s => new { SNAME = s.S
1. 查询Student表中的所有记录的Sname.Ssex和Class列.select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS }Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SSEX,CLASS
. 查询Student表中的所有记录的Sname.Ssex和Class列. select sname,ssex,class from student Linq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS } Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SSEX,CLASS = s.CLASS }) . 查询教师所有的单位即不重复的Depart列.
1. 查询Student表中的所有记录的Sname.Ssex和Class列.select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS } Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SSEX,CLASS = s.C
using System.Linq; List<string> ListA = new List<string>(); List<string> ListB = new List<string>(); List<string> ListResult = new List<string>(); ListResult = ListA.Distinct().ToList();//去重 ListResult = ListA
1. 查询Student表中的所有记录的Sname.Ssex和Class列. select sname,ssex,class from studentLinq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS }Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SSEX,CLASS = s.CLASS }) 2. 查询教师所有的单位即不重复的Depart列.
using System.Linq; List<string> ListA = new List<string>(); List<string> ListB = new List<string>(); List<string> ListResult = new List<string>(); ListResult = ListA.Distinct().ToList();//去重 ListResult = ListA.Except(Li
http://kb.cnblogs.com/page/73528/ 1. 查询Student表中的所有记录的Sname.Ssex和Class列. select sname,ssex,class from student Linq: from s in Students select new { s.SNAME, s.SSEX, s.CLASS } Lambda: Students.Select( s => new { SNAME = s.SNAME,SSEX = s.SSEX,CLASS = s