.Net Example: Variables, Properties, Methods, Events

This shows how to use on .Net class variables, properties, methods, and events.  For example, we are going to use the class DotNetClass1 in DotNet Assembly in ATEasy Examples:

Note that there are more examples in DotNet.prj in the ATEasy Examples folder.

Variables

You can get and set of a variable, sInstanceString as in

s=cls1.sInstanceString

cls1.sInstanceString="1234"

Constant Variables

Some of variables are constant variables which you cannot change their values.  For example, it is a constant variable, sConstString, you will see in its Value property page.

Properties

You can get and set its property:

s=cls1.InstanceProp

cls1.InstanceProp="1234"

Some properties are read-only - it is marked as Read-Only in its property page:

Methods

In the following example all methods are returning a string.

Simple method

if cls1.OverloadedMethod(0)<>"DotNetClass1.OverloadedMethod.INT"

TestStatus=FAIL

endif

Static method

if cls1.StaticMethod()<>"DotNetClass1.StaticMethod"

TestStatus=FAIL

endif

Complex method with VAR params

l=0
s=""
if cls1.OverloadedMethod(0, l, "B", s, dt, dt, as, as, adt, adt)<>"DotNetClass1.OverloadedMethod.With_10_Params"

TestStatus=FAIL

endif

The following shows the definition of the over-loaded method, OverLoadedMethod():

Events

First, you need to create event procedure which is to be invoked upon an event.  In the example below, OnEvent() is the procedure of which the first parameter must be the sender .Net object. Next you need to add the handler for the event using AddHandler statement:

! fire class1 event

AddHandler cls1.OnEvent, OnEvent

cls1.FireEvent()

if objEventArgs=Nothing

TestStatus=FAIL

elseif objEventArgs.iClassNumber<>1 AND objEventArgs.sEventDescription<>"Class1 event"

TestStatus=FAIL

endif

Procedure OnEvent(objSender, objEventArgs): Void

--------------------------------------------------------------------------------

objSender: Val Object

objEventArgs: Val CustomEventArgs

{

Program.objEventArgs=objEventArgs

}