Question

I might be missing something, but I’m getting what I think seems an odd error, that none of the other developers are getting with the same code…

public void SomeMethod(... symbolInfo)
{
   ElementId elementId = symbolInfo.GetElementIds().Head(true);
   if (elementId.HasValue())
   {
      // error here "Use of possibly unassigned field 'Type'"
      object element = repository.FindElement(elementId.Type, elementId.Id);
      if (element != null) { ... }
   }
}

public struct ElementId
{
   public string Id;
   public MDAPI_ElementType Type;
}

With the following extension methods:

public static bool IsEmpty(this ElementId id)
{
    return id.Type == ElementType.ElementUnknown || string.IsNullOrEmpty(id.Id);
}

public static bool HasValue(this ElementId id)
{
   return !id.IsEmpty();
}

Can anyone tell my why this won’t build?

Answer 1

I’ve managed to fix my build error, by instead calling an extension method which directly takes the ElementId. I have no idea why this fixes the issue though!

public static object FindElement(this IMRepository rep, ElementId element)
{
    return rep.FindElement(element.Type, element.Id);
}