Question

please help me on creating a user control object in runtime using createobject function or whatever better function in vb.net.

here is my code:

Dim b As New Security.Sec_Role
b.Name = "Sec_Role" 
b.visible = true

but i want to use this code:

dim b as object
b = createobject("Security.Sec_Role")

but it always return an error:

Cannot create ActiveX component.

EDIT: i figure it out..thanks a lot..i use this codes:

Dim asm As System.Reflection.Assembly = Assembly.Load("Security")
Dim b As Object = Activator.CreateInstance(asm.GetType("Security.Sec_Role"))

Answer 1

If it is an .Net UserControl you will not be able to use CreateObject unless it has been exposed as a Com object according to the MSDN page for CreateObject. Using New would be the proper way to create a .Net UserControl.

From above link:

Creates and returns a reference to a COM object. CreateObject cannot
be used to create instances of classes in Visual Basic unless those
classes are explicitly exposed as COM components.

From this MSDN Forum try something like this using System.Activator.CreateInstance:

Dim oType As System.Type = Type.GetType("MyNamespace.ClassName")
Dim obj = System.Activator.CreateInstance(oType)