关于select、where 基础,该如何处理

关于select、where 基础
刚开始看linq


问题：下面2句，分别用where，select ，有什么区别，查询结果是不是都一样
orders是List<Order> 
var ordByCountry = orders.Where(order => order.ShipCountry.Equals(country));

var ordByCountry = orders.Select(order => order.ShipCountry.Equals(country));


  public class Order
  {
  private int orderID;
  private string customerID;
  private decimal freight;
  private string shipName;
  private string shipAddress;
  private string shipCity;
  private string shipCountry;

  public int OrderID { get; set; }
  public string CustomerID { get; set; }
  public decimal Freight { get; set; }
  public string ShipName { get; set; }
  public string ShipAddress { get; set; }
  public string ShipCity { get; set; }
  public string ShipCountry { get; set; }
  }


[解决办法]
修改一下

var v = list.Select(x => x = 5);返回 5,5,5,5,5,5,5,5,5,5 10个5
[解决办法]
where和select怎么会一样呢

你自己构造点数据，执行下边两个语句就明白了：


var ordByCountry = orders.Where(order => order.ShipCountry.Equals(country));

var ordByCountry1 = orders.Select(order => order.ShipCountry);

[解决办法]
修改下
比如说

C# code

int[] data = { 1, 2, 3, 4, 5, 6 };