public class SomeClass
{
    public string StringVar="";
    public int IntVar = 0;
    ...

  public void ClearSomeClassVars()
  {
     StringVar="";
     IntVar = "";
  }
}

public class WorkClass
{
    List<SomeClass> SomeClassList = new  List<SomeClass>();
    
    public WorkClass()
    {
        SomeClassList.Add(new SomeClass(){StringVar = someInfo,  IntVar = someNumber });
    }
}