Hi,

Just to report the MultiSelect2 method does not accept the AddComponents3 method result.

I have to cast COM object array into a IComponent2 object array before.

var components = (object[])assembly.AddComponents3(names, transforms, coordSystemNames);
var count = docExtension.MultiSelect2(components, false, null); // Select no component and returns 0

To fix it:

var components = (object[])assembly.AddComponents3(names, transforms, coordSystemNames);
// FIX
var array = new Component2[components.Length];
for (var i = 0; i < components.Length; i += 1)
    array[i] = (Component2)components[i];
var count = docExtension.MultiSelect2(array, false, null); // Select all components and returns components.Length

Is it a normal behavior or an API problem ?

Best regards,

Alexandre