Convert or map a class instance to a list of another one by using Lambda or LINQ?

Question

I have the following two classes:

class MyData {
  public List PropertyList { get; private set;}
  public string PropertyB { get; set; }
  publ         


        

Answer 1

It's nice and easy. You want to do something based on every item (a string) in a particular list, so make that the starting point of your query expression. You want to create a new item (a MyData2) for each of those strings, so you use a projection. You want to create a list at the end, so you call ToList() to finish the job:

 var myData2List = myData.PropertyList
                         .Select(x => new MyData2 { 
                             PropertyA = x, 
                             PropertyB = myData.PropertyB, 
                             PropertyC = myData.PropertyC })
                         .ToList();