Michelle,

To explain why the error happened.

You'll get that error if you don't have the () at the end of the method name otherwise VFP can't from the circumstances it finds the code in know whether you are talking about a method or a property. FWIW I always put () after a method name I just think it's a good habit.

For example:

if ( lSomeCondition )
   this.DoSomething
endif

VFP knows that you have to be talking about a method, it's not syntactically correct to be talking about a property on the this.DoSomething line so it calls the DoSomething method. Inside the IF condition you must use the () to remove the ambiguity:

if ( this.DoSomething() )
   this.DoSomethingElse()
endif

>How do I do the equivalent of "IF thisform.DoSomething() THEN..." where "DoSomething" returns .T. or .F.?
>
>It complains that "DoSomething" is a method, not a property.