Sitecore IsPageEditor and IsExperienceEditor - sitecore

Question

We are currently writing a module for Sitecore and have ran into a problem.
We have a pipeline in which we do the following check:
if (Sitecore.Context.PageMode.IsExperienceEditor)
{
return;
}
The problem is that one of our clients are running and older version of Sitecore (8.0 update 5) where the property IsExperienceEditor does not exist yet. See Sitecore release notes for next update where it is introduced.
To quickly fix the error we used the older deprecated property which is this:
if (Sitecore.Context.PageMode.IsPageEditor)
{
return;
}
Now the question is, is there any way in which we can test for the Sitecore version so we can have backwards compatibility in the module?

Answer 1

You can use the code which is executed in Sitecore in background of both properties mentioned by you:
if (Sitecore.Context.Site.DisplayMode == Sitecore.Sites.DisplayMode.Edit)
{
return;
}
I know that using Sitecore.Context.PageMode.IsExperienceEditor (or Sitecore.Context.PageMode.IsPageEditor) is more elegant, but in a situation when you need to support both old and new Sitecore versions, that's sounds like a good option.

Answer 2

The deprecated property of IsPageEditor is still present specifically for the purpose of backward compatibility. IsExperienceEditor is just a renamed property that does the same thing that IsPageEditor does.
However you can check for the existence of a property like this:
public static bool HasProperty(this object obj, string propertyName)
{
return obj.GetType().GetProperty(propertyName) != null;
}
Another option is to make two different versions of the module, if the implementation becomes significantly different for the different versions of Sitecore.