Question

我有以下代码：

var emp = new List<Employee>
{    
   new Employee{ID=1, EmpFname="matt", EmpLName="Cook"},  
   new Employee{ID=2, EmpFname="mary", EmpLname="John"}
};

如何通过EmpLName对emp进行排序并将其绑定到GridView？如何指定asc或desc？

Answer 1

        List<Employee> temp = new List<Employee> { 
            new Employee { ID = 1, EmpFname = "matt", EmpLName = "Cook" }, 
            new Employee { ID = 2, EmpFname = "mary", EmpLName = "John" } };

        temp.Sort(delegate(Employee e1, Employee e2)
        {
            // returns asc
            return e1.EmpLName.CompareTo(e2.EmpLName);
           // returns desc
           //  return e2.EmpLName.CompareTo(e1.EmpLName);

        });

        // no need to use var keyword, just bind the List 
        MyGridView.DataSource = temp;
        MyGridView.DataBind();

Answer 2

使用LINQ的简单方法：

var sortedEmpList = ( from e in emp
orderby e.EmpLName
select e).ToList()
);

您还可以通过在 orderby 之后添加更多属性来继续按其他属性进行排序。

orderby e.EmpLName, e.EmpFName  //, ...

如果您需要，请选择降序

orderby e.EmpLName descending

绑定到ASP.NET GridView

2 个答案: