Public class Student 
{
Public string First {get; set; } 
Public string Last {get; set; } 
Public int ID {get; set; } 
} 

Public static List GetStudents () 
{
//Use a collection, initializer to create the data source. Note that each element 
//in the list contains an inner sequence of scores. 
List Students=new List 
{
The new Student {First="life", the Last="Omelchenko", ID=111}, 
New Student {First="Claire", Last="O 'donnell", ID=112}, 
New Student {First="Sven", Last="Mortensen," ID=113}, 
New Student {First="Cesar", Last="Garcia," ID=114}, 
New Student {First="Debra", Last="Garcia," ID=115} 
}; 

Return students; 

} 

GetStudents (.) OrderBy (u=& gt; U.F irst)
GetStudents (.) OrderBy (u=& gt; U.L ast)
GetStudents (.) OrderBy (u=& gt; U.I D)

Can sort, if the sorting is a variable field, should be how to write?
If the string field="First";
GetStudents (.) OrderBy (u=& gt; U.?

CodePudding user response:

Using Reflection (Reflection)

 var dynamicPropFromStr=typeof (Student). GetProperty (" First "); 
GetStudents (.) OrderBy (u=& gt; DynamicPropFromStr. GetValue (u, null))