how to change an item in IQueryable<T>?

i have a the following class :

class myClass { string b; string c; string d; }

and the following list :

IQueryable<myClass> bla = new list<myClass>();

i want to change the first item in the list where开发者_JAVA技巧 myClass.c = "kitten";

To another instance of myClass lets call him newInstance;

i don't want to do k = bla.first(x => x.c =="kitten") and then copy one by one the fields from newInstance to k, i want the "bla" list to refernce to newInstance, without changing k..

how do i achieve it ?

You can use below iterator to do this:

public static IEnumerable<myClass> GetChanged(IEnumerable<myClass> data)
{
    bool found = false;
    foreach(myClass c in data)
    {
       if(found == false && c.c=="kitten")
       {
           found = true;
           yield return new myClass() ; //new object
       }
       else
           yield return c;
    }
}