RE: FN-FORUM: Create an instance of a .NET component

date posted 9th January 2006 09:13

Hi,
Create and instance of a .NET assembly at runtime. Got it sorted now -
for anybody that's interested;

Public Function LoadClassByName(ByVal lstrAssemblyName As String,
ByVal lstrClassName As String, ByVal lobjArguments() As Object, ByRef
lstrMsg As String, ByRef lobjTemp As Object) As Boolean
Dim lobjAssembly As Reflection.Assembly
Dim lobjParams() As Object

If Dir(lstrAssemblyName).Equals("") Then
lstrMsg =3D "Assembly could not be found [" & =
lstrAssemblyName
& "]"
lobjTemp =3D Nothing
Return False
End If

'Load assembly
Try
lobjAssembly =3D lobjAssembly.LoadFrom(lstrAssemblyName)
Catch When Err.Number 0
lstrMsg =3D Err.Description
Return False
End Try

'Create instance of object
Try
lobjTemp =3D lobjAssembly.CreateInstance(lstrClassName, =
False,
Reflection.BindingFlags.CreateInstance, Nothing, lobjArguments, Nothing,
Nothing)
Catch When Err.Number 0
lstrMsg =3D Err.Description
Return False
End Try

If lobjTemp Is Nothing Then
lstrMsg =3D "Instance of [" & lstrClassName & "] could not =
be
created"
lobjTemp =3D Nothing
Return False
End If

Return True
End Function




Cheers
Andy

=20

-----Original Message-----
From: [EMAIL REMOVED] [EMAIL REMOVED] On Behalf Of Ben
Moxon
Sent: Monday, January 09, 2006 9:36 AM
To: Andy Macnaughton-Jones
Subject: Re: FN-FORUM: Create an instance of a .NET component


Andy Macnaughton-Jones wrote:

>In VB.NET, it seems to be a bit long winded and I don't seem able to=20
>create a project that lets me create a COM dll - I need to be able to=20
>late bind to an object to reference it at run time rather than design=20
>time.
>
hen you say "create a com dll" do you mean that you want to build a COM
dll in VB.Net or you want to instanciate one from VB.Net?

-ben


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