I am testing an old-school COM / ActiveX control using NUnit and C #. I do everything dynamically, no links or information like compile time, because the control that I am testing is used mainly from javascript - which, of course, does everything dynamically. I want to hook some event handlers and make sure the events are fired properly, but I cannot find the events! I am dynamically creating an instance of the control using System.Activator.CreateInstance, for example (some details are omitted ;-):
Type T = Type.GetTypeFromCLSID(guid); eztwain = System.Activator.CreateInstance(T); EZTwainX = eztwain.GetType();
Tests of properties and methods work fine, for example:
EZTwainX.InvokeMember("Clear", BindingFlags.InvokeMethod, null, eztwain, null); Assert.AreEqual(0, (int)EZTwainX.InvokeMember("ImageCount", BindingFlags.GetProperty, null, eztwain, null), "ImageCount");
The following errors fail by returning a null or empty array or throwing a "name not found" exception:
EZTwainX.GetEvent("AcquireDone"); // returns null EZTwainX.GetEvents(); // returns empty array EZTwainX.GetEvents(BindingFlags.Public | // returns empty array BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance); PropertyInfo propertyInfo = EZTwainX.GetProperty("Events", BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance); // returns null MemberInfo[] mimfo = EZTwainX.GetMember("AcquireDone", MemberTypes.Event, BindingFlags.Public | BindingFlags.NonPublic); // returns empty array
I just assumed (um) that I could do something using the Reflection API equivalent:
eztwain.AcquireDone += <event handler>;
but I can’t understand what it is. EDIT: I believe in this event on this control, because in Javascript this works (and catches events):
eztwain.attachEvent("AcquireDone", function() { me.onAcquireDone(); });