I have the following code in C#, and it works fine. After porting the code
to VB.NET, I get a precompile error in the IDE. Does anyone know why this
could be happening?

protected delegate void MulticastDelegate(object sender, EventArgs e);

virtual public void Subscribe(object tag, EventHandler _eventHandler, bool
loose)
{

//... other code above omitted
// create the delegate for this event handler
MulticastDelegate newDelegate=new MulticastDelegate(_eventHandler);

//...other code below omitted
}



VB.NET Translation:

Protected Delegate Sub MulticastDelegate(ByVal sender As Object, ByVal e As
EventArgs)

Public Overridable Overloads Sub Subscribe(ByVal tag As Object, ByVal
mEventHandler As EventHandler, ByVal loose As Boolean)

'the line below is giving the pre-compile error
Dim newDelegate As MulticastDelegate = New
MulticastDelegate(mEventHandler)
End Sub 'Subscribe

The precompile error is as follows:

'MulticastDelegate' is a delegate type. Delegate construction permits only
a single AddressOf expression as an argument list. Often an AddressOf
expression can be used instead of a delegate construction.

VB.NET is not my strongest side but I think you have to use the AddressOf operator:

Dim newDelegate As MulticastDelegate
= New MulticastDelegate(AddressOf mEventHandler)

Regards, Jakob.


"Cedric B" wrote:

> I have the following code in C#, and it works fine. After porting the code
> to VB.NET, I get a precompile error in the IDE. Does anyone know why this
> could be happening?
>
> protected delegate void MulticastDelegate(object sender, EventArgs e);
>
> virtual public void Subscribe(object tag, EventHandler _eventHandler, bool
> loose)
> {
>
> //... other code above omitted
> // create the delegate for this event handler
> MulticastDelegate newDelegate=new MulticastDelegate(_eventHandler);
>
> //...other code below omitted
> }
>
>
>
> VB.NET Translation:
>
> Protected Delegate Sub MulticastDelegate(ByVal sender As Object, ByVal e As
> EventArgs)
>
> Public Overridable Overloads Sub Subscribe(ByVal tag As Object, ByVal
> mEventHandler As EventHandler, ByVal loose As Boolean)
>
> 'the line below is giving the pre-compile error
> Dim newDelegate As MulticastDelegate = New
> MulticastDelegate(mEventHandler)
> End Sub 'Subscribe
>
> The precompile error is as follows:
>
> 'MulticastDelegate' is a delegate type. Delegate construction permits only
> a single AddressOf expression as an argument list. Often an AddressOf
> expression can be used instead of a delegate construction.
>
>
>

there is c# is case sensitive but i compile in vb.net


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<prasadcvvk ((E-Mail Removed))> wrote:
> there is c# is case sensitive but i compile in vb.net

Could you rephrase that please? What do you mean?

--
Jon Skeet - <(E-Mail Removed)>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

If you do re-write the code in VB.NET as shown below, you get a different
pre compile error. mEventHandler is a delegate type. The C# code is
basically creating a new instance of the delegate type MulticastDelegate and
assigning it to the delegate passed in mEventHandler.

I just cant figure out how to do the same thing in VB.NET.



"Jakob Christensen" <(E-Mail Removed)> wrote in message
news:3AF49955-5843-44D3-887D-(E-Mail Removed)...
> VB.NET is not my strongest side but I think you have to use the AddressOf
operator:
>
> Dim newDelegate As MulticastDelegate
> = New MulticastDelegate(AddressOf mEventHandler)
>
> Regards, Jakob.
>
>
> "Cedric B" wrote:
>
> > I have the following code in C#, and it works fine. After porting the
code
> > to VB.NET, I get a precompile error in the IDE. Does anyone know why
this
> > could be happening?
> >
> > protected delegate void MulticastDelegate(object sender, EventArgs e);
> >
> > virtual public void Subscribe(object tag, EventHandler _eventHandler,
bool
> > loose)
> > {
> >
> > //... other code above omitted
> > // create the delegate for this event handler
> > MulticastDelegate newDelegate=new MulticastDelegate(_eventHandler);
> >
> > //...other code below omitted
> > }
> >
> >
> >
> > VB.NET Translation:
> >
> > Protected Delegate Sub MulticastDelegate(ByVal sender As Object, ByVal e
As
> > EventArgs)
> >
> > Public Overridable Overloads Sub Subscribe(ByVal tag As Object, ByVal
> > mEventHandler As EventHandler, ByVal loose As Boolean)
> >
> > 'the line below is giving the pre-compile error
> > Dim newDelegate As MulticastDelegate = New
> > MulticastDelegate(mEventHandler)
> > End Sub 'Subscribe
> >
> > The precompile error is as follows:
> >
> > 'MulticastDelegate' is a delegate type. Delegate construction permits
only
> > a single AddressOf expression as an argument list. Often an AddressOf
> > expression can be used instead of a delegate construction.
> >
> >
> >

Maybe this will work:

Dim newDelegate As MulticastDelegate = MulticastDelegate.CreateDelegate(GetType(MulticastDelegate), mEventHandler.Method)

But I do think that it will only work, if mEventHandler.Method represents a static method.

Regards, Jakob.


"Cedric Bertolasio" wrote:

> If you do re-write the code in VB.NET as shown below, you get a different
> pre compile error. mEventHandler is a delegate type. The C# code is
> basically creating a new instance of the delegate type MulticastDelegate and
> assigning it to the delegate passed in mEventHandler.
>
> I just cant figure out how to do the same thing in VB.NET.
>
>
>
> "Jakob Christensen" <(E-Mail Removed)> wrote in message
> news:3AF49955-5843-44D3-887D-(E-Mail Removed)...
> > VB.NET is not my strongest side but I think you have to use the AddressOf
> operator:
> >
> > Dim newDelegate As MulticastDelegate
> > = New MulticastDelegate(AddressOf mEventHandler)
> >
> > Regards, Jakob.
> >
> >
> > "Cedric B" wrote:
> >
> > > I have the following code in C#, and it works fine. After porting the
> code
> > > to VB.NET, I get a precompile error in the IDE. Does anyone know why
> this
> > > could be happening?
> > >
> > > protected delegate void MulticastDelegate(object sender, EventArgs e);
> > >
> > > virtual public void Subscribe(object tag, EventHandler _eventHandler,
> bool
> > > loose)
> > > {
> > >
> > > //... other code above omitted
> > > // create the delegate for this event handler
> > > MulticastDelegate newDelegate=new MulticastDelegate(_eventHandler);
> > >
> > > //...other code below omitted
> > > }
> > >
> > >
> > >
> > > VB.NET Translation:
> > >
> > > Protected Delegate Sub MulticastDelegate(ByVal sender As Object, ByVal e
> As
> > > EventArgs)
> > >
> > > Public Overridable Overloads Sub Subscribe(ByVal tag As Object, ByVal
> > > mEventHandler As EventHandler, ByVal loose As Boolean)
> > >
> > > 'the line below is giving the pre-compile error
> > > Dim newDelegate As MulticastDelegate = New
> > > MulticastDelegate(mEventHandler)
> > > End Sub 'Subscribe
> > >
> > > The precompile error is as follows:
> > >
> > > 'MulticastDelegate' is a delegate type. Delegate construction permits
> only
> > > a single AddressOf expression as an argument list. Often an AddressOf
> > > expression can be used instead of a delegate construction.
> > >
> > >
> > >
>
>
>

That did the trick.

Thanks a lot.

Cheers


"Jakob Christensen" <(E-Mail Removed)> wrote in message
news:06BD872D-98FF-47C6-9F0E-(E-Mail Removed)...
> Maybe this will work:
>
> Dim newDelegate As MulticastDelegate =
MulticastDelegate.CreateDelegate(GetType(MulticastDelegate),
mEventHandler.Method)
>
> But I do think that it will only work, if mEventHandler.Method represents
a static method.
>
> Regards, Jakob.
>
>
> "Cedric Bertolasio" wrote:
>
> > If you do re-write the code in VB.NET as shown below, you get a
different
> > pre compile error. mEventHandler is a delegate type. The C# code is
> > basically creating a new instance of the delegate type MulticastDelegate
and
> > assigning it to the delegate passed in mEventHandler.
> >
> > I just cant figure out how to do the same thing in VB.NET.
> >
> >
> >
> > "Jakob Christensen" <(E-Mail Removed)> wrote in message
> > news:3AF49955-5843-44D3-887D-(E-Mail Removed)...
> > > VB.NET is not my strongest side but I think you have to use the
AddressOf
> > operator:
> > >
> > > Dim newDelegate As MulticastDelegate
> > > = New MulticastDelegate(AddressOf mEventHandler)
> > >
> > > Regards, Jakob.
> > >
> > >
> > > "Cedric B" wrote:
> > >
> > > > I have the following code in C#, and it works fine. After porting
the
> > code
> > > > to VB.NET, I get a precompile error in the IDE. Does anyone know
why
> > this
> > > > could be happening?
> > > >
> > > > protected delegate void MulticastDelegate(object sender, EventArgs
e);
> > > >
> > > > virtual public void Subscribe(object tag, EventHandler
_eventHandler,
> > bool
> > > > loose)
> > > > {
> > > >
> > > > //... other code above omitted
> > > > // create the delegate for this event handler
> > > > MulticastDelegate newDelegate=new MulticastDelegate(_eventHandler);
> > > >
> > > > //...other code below omitted
> > > > }
> > > >
> > > >
> > > >
> > > > VB.NET Translation:
> > > >
> > > > Protected Delegate Sub MulticastDelegate(ByVal sender As Object,
ByVal e
> > As
> > > > EventArgs)
> > > >
> > > > Public Overridable Overloads Sub Subscribe(ByVal tag As Object,
ByVal
> > > > mEventHandler As EventHandler, ByVal loose As Boolean)
> > > >
> > > > 'the line below is giving the pre-compile error
> > > > Dim newDelegate As MulticastDelegate = New
> > > > MulticastDelegate(mEventHandler)
> > > > End Sub 'Subscribe
> > > >
> > > > The precompile error is as follows:
> > > >
> > > > 'MulticastDelegate' is a delegate type. Delegate construction
permits
> > only
> > > > a single AddressOf expression as an argument list. Often an
AddressOf
> > > > expression can be used instead of a delegate construction.
> > > >
> > > >
> > > >
> >
> >
> >