Type information for UserControls

[Leszek Taratuta]

Hello,

I have the following code:

// Load the MenuBar.ascx user control. The control defines SavePropertyEve nt
event.
UserControl ctrl =
(UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");

// Get type information of the loaded user control.
Type myType = ctrl.GetType();

// Get SavePropertyEve nt event using reflection.
EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );

if ( events != null )
{
// Assign event handler (does not work).

// PROBLEM: The following line does not work because ctrl is of generic
UserControl type
// that does not define SavePropertyEve nt event.
ctrl.SaveProper tyEvent += new CommandEventHan dler(
SavePropertyEve nt_Raise );

// The following line could work, but C# does not provide such
construction:
// casting to variables of type Type. Should I use a Converter? How?
( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
}

The question is how to cast the 'ctrl' variable to the type assigned to
'myType' variable.

Any hints?
Thanks

Leszek Taratuta

[Scott Allen]

I'm a little confused. Is there a reason you can't use:

MenuBar mb = (MenuBar)Page.L oadControl(...) ;
mb.SaveProperty Event += new CommandEventHan dler(...);

--
Scott
http://www.OdeToCode.com/blogs/scott/

Hello,

I have the following code:

// Load the MenuBar.ascx user control. The control defines
SavePropertyEve nt
event.
UserControl ctrl =
(UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
// Get type information of the loaded user control. Type myType =
ctrl.GetType();

// Get SavePropertyEve nt event using reflection.
EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
if ( events != null )
{
// Assign event handler (does not work).
// PROBLEM: The following line does not work because ctrl is of
generic
UserControl type
// that does not define SavePropertyEve nt event.
ctrl.SaveProper tyEvent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
// The following line could work, but C# does not provide such
construction:
// casting to variables of type Type. Should I use a Converter?
How?
( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
}

The question is how to cast the 'ctrl' variable to the type assigned
to 'myType' variable.

Any hints?
Thanks
Leszek Taratuta

[Leszek Taratuta]

Sorry for confusion. I have sent just a part of code.

Actually I need to load many user controls of diffrent types. Some of them
define SavePropertyEve nt some not. The ASPX page need to assign event
handler for those user controls that define SavePropertyEve nt.

I wanted to create a generic code that would load user controls as
UserControl, then discover the specific derived type that defines (or not)
SavePropertyEve nt, and assign event handler to this event.

Thanks for reply anyway.

Any other suggestions?

Leszek Taratuta

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:53******** *************@m snews.microsoft .com...

I'm a little confused. Is there a reason you can't use:

MenuBar mb = (MenuBar)Page.L oadControl(...) ;
mb.SaveProperty Event += new CommandEventHan dler(...);

--
Scott
http://www.OdeToCode.com/blogs/scott/

Hello,

I have the following code:

// Load the MenuBar.ascx user control. The control defines
SavePropertyEve nt
event.
UserControl ctrl =
(UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
// Get type information of the loaded user control. Type myType =
ctrl.GetType();

// Get SavePropertyEve nt event using reflection.
EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
if ( events != null )
{
// Assign event handler (does not work).
// PROBLEM: The following line does not work because ctrl is of
generic
UserControl type
// that does not define SavePropertyEve nt event.
ctrl.SaveProper tyEvent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
// The following line could work, but C# does not provide such
construction:
// casting to variables of type Type. Should I use a Converter?
How?
( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
}

The question is how to cast the 'ctrl' variable to the type assigned
to 'myType' variable.

Any hints?
Thanks
Leszek Taratuta

[William F. Robertson, Jr.]

You will look at the user control and see if it implements the
ISavePropertyEv ent interface, if it does, you will cast the generic
UserControl to a ISavePropertyEv ent to get the event to wire to.

I am not actually sure if this would work, but it compiled, but I didn't
actually run it.

<snippets>
public interace ISavePropertyEv ent
{
event CommandEventHan dler SavePropertyEve nt;
}

public myUserControl : UserControl : ISavePropertyEv ent
{
public event CommandEventHan dler SavePropertyEve nt;
}

UserControl control = Page.FindContro l( "myControlN ame" );
if ( control is ISavePropertyEv ent )
{
( ( ISavePropertyEv ent ) control).SavePr opertyEvent += new
CommandEventHan dler(...)
}

HTH,

bill

"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:OR******** ******@TK2MSFTN GP14.phx.gbl...

Sorry for confusion. I have sent just a part of code.

Actually I need to load many user controls of diffrent types. Some of them
define SavePropertyEve nt some not. The ASPX page need to assign event
handler for those user controls that define SavePropertyEve nt.

I wanted to create a generic code that would load user controls as
UserControl, then discover the specific derived type that defines (or not)
SavePropertyEve nt, and assign event handler to this event.

Thanks for reply anyway.

Any other suggestions?

Leszek Taratuta

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:53******** *************@m snews.microsoft .com...

I'm a little confused. Is there a reason you can't use:

MenuBar mb = (MenuBar)Page.L oadControl(...) ;
mb.SaveProperty Event += new CommandEventHan dler(...);

--
Scott
http://www.OdeToCode.com/blogs/scott/

Hello,

I have the following code:

// Load the MenuBar.ascx user control. The control defines
SavePropertyEve nt
event.
UserControl ctrl =
(UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
// Get type information of the loaded user control. Type myType =
ctrl.GetType();

// Get SavePropertyEve nt event using reflection.
EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
if ( events != null )
{
// Assign event handler (does not work).
// PROBLEM: The following line does not work because ctrl is of
generic
UserControl type
// that does not define SavePropertyEve nt event.
ctrl.SaveProper tyEvent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
// The following line could work, but C# does not provide such
construction:
// casting to variables of type Type. Should I use a Converter?
How?
( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
SavePropertyEve nt_Raise );
}

The question is how to cast the 'ctrl' variable to the type assigned
to 'myType' variable.

Any hints?
Thanks
Leszek Taratuta

[Leszek Taratuta]

Thanks.
I figured out this solution as well. The problem is that my user controls
can implement many different events. I just gave an example of
SavePropertyEve nt, but there may be many other: LoadControlEven t,
ChangeIdEvent, RefreshParentEv ent etc. It means I would need to create a
separate interface for each of those events:
ILoadControlEve nt, IChangeIdEvent, IRefreshParentE vent etc

I hoped there would be a more generic way to discover the type of user
control (using reflection or descriptors) in run-time and assign proper
event handlers.

For now it seems there is no generic way.

Thanks anyway,
Leszek

"William F. Robertson, Jr." <th****@nameht. org> wrote in message
news:Oy******** ******@TK2MSFTN GP10.phx.gbl...

You will look at the user control and see if it implements the
ISavePropertyEv ent interface, if it does, you will cast the generic
UserControl to a ISavePropertyEv ent to get the event to wire to.

I am not actually sure if this would work, but it compiled, but I didn't
actually run it.

<snippets>
public interace ISavePropertyEv ent
{
event CommandEventHan dler SavePropertyEve nt;
}

public myUserControl : UserControl : ISavePropertyEv ent
{
public event CommandEventHan dler SavePropertyEve nt;
}

UserControl control = Page.FindContro l( "myControlN ame" );
if ( control is ISavePropertyEv ent )
{
( ( ISavePropertyEv ent ) control).SavePr opertyEvent += new
CommandEventHan dler(...)
}

HTH,

bill

"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:OR******** ******@TK2MSFTN GP14.phx.gbl...

Sorry for confusion. I have sent just a part of code.

Actually I need to load many user controls of diffrent types. Some of them define SavePropertyEve nt some not. The ASPX page need to assign event
handler for those user controls that define SavePropertyEve nt.

I wanted to create a generic code that would load user controls as
UserControl, then discover the specific derived type that defines (or not) SavePropertyEve nt, and assign event handler to this event.

Thanks for reply anyway.

Any other suggestions?

Leszek Taratuta

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:53******** *************@m snews.microsoft .com...

I'm a little confused. Is there a reason you can't use:

MenuBar mb = (MenuBar)Page.L oadControl(...) ;
mb.SaveProperty Event += new CommandEventHan dler(...);

--
Scott
http://www.OdeToCode.com/blogs/scott/

> Hello,
>
> I have the following code:
>
> // Load the MenuBar.ascx user control. The control defines
> SavePropertyEve nt
> event.
> UserControl ctrl =
> (UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
> // Get type information of the loaded user control. Type myType =
> ctrl.GetType();
>
> // Get SavePropertyEve nt event using reflection.
> EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
> if ( events != null )
> {
> // Assign event handler (does not work).
> // PROBLEM: The following line does not work because ctrl is of
> generic
> UserControl type
> // that does not define SavePropertyEve nt event.
> ctrl.SaveProper tyEvent += new CommandEventHan dler(
> SavePropertyEve nt_Raise );
> // The following line could work, but C# does not provide such
> construction:
> // casting to variables of type Type. Should I use a Converter?
> How?
> ( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
> SavePropertyEve nt_Raise );
> }
>
> The question is how to cast the 'ctrl' variable to the type assigned
> to 'myType' variable.
>
> Any hints?
> Thanks
> Leszek Taratuta
>

[William F. Robertson, Jr.]

Ahh, I went back and reread your first post. Sorry for the confusion; I am
not convinced this is the best approach for you to take, but here is how to
do it.

You were almost there for your syntax.

<snippet>
if ( events != null )
events.AddEvent Handler( ctrl, new CommandEventHan dler(
SavePropertyEve nt_Raise ) );

This will add the event handler to your control.

HTH,

bill
"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:Ok******** ******@TK2MSFTN GP14.phx.gbl...

Thanks.
I figured out this solution as well. The problem is that my user controls
can implement many different events. I just gave an example of
SavePropertyEve nt, but there may be many other: LoadControlEven t,
ChangeIdEvent, RefreshParentEv ent etc. It means I would need to create a
separate interface for each of those events:
ILoadControlEve nt, IChangeIdEvent, IRefreshParentE vent etc

I hoped there would be a more generic way to discover the type of user
control (using reflection or descriptors) in run-time and assign proper
event handlers.

For now it seems there is no generic way.

Thanks anyway,
Leszek

"William F. Robertson, Jr." <th****@nameht. org> wrote in message
news:Oy******** ******@TK2MSFTN GP10.phx.gbl...

You will look at the user control and see if it implements the
ISavePropertyEv ent interface, if it does, you will cast the generic
UserControl to a ISavePropertyEv ent to get the event to wire to.

I am not actually sure if this would work, but it compiled, but I didn't
actually run it.

<snippets>
public interace ISavePropertyEv ent
{
event CommandEventHan dler SavePropertyEve nt;
}

public myUserControl : UserControl : ISavePropertyEv ent
{
public event CommandEventHan dler SavePropertyEve nt;
}

UserControl control = Page.FindContro l( "myControlN ame" );
if ( control is ISavePropertyEv ent )
{
( ( ISavePropertyEv ent ) control).SavePr opertyEvent += new
CommandEventHan dler(...)
}

HTH,

bill

"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:OR******** ******@TK2MSFTN GP14.phx.gbl...

Sorry for confusion. I have sent just a part of code.

Actually I need to load many user controls of diffrent types. Some of them define SavePropertyEve nt some not. The ASPX page need to assign event
handler for those user controls that define SavePropertyEve nt.

I wanted to create a generic code that would load user controls as
UserControl, then discover the specific derived type that defines (or not) SavePropertyEve nt, and assign event handler to this event.

Thanks for reply anyway.

Any other suggestions?

Leszek Taratuta

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:53******** *************@m snews.microsoft .com...
> I'm a little confused. Is there a reason you can't use:
>
> MenuBar mb = (MenuBar)Page.L oadControl(...) ;
> mb.SaveProperty Event += new CommandEventHan dler(...);
>
> --
> Scott
> http://www.OdeToCode.com/blogs/scott/
>
> > Hello,
> >
> > I have the following code:
> >
> > // Load the MenuBar.ascx user control. The control defines
> > SavePropertyEve nt
> > event.
> > UserControl ctrl =
> > (UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
> > // Get type information of the loaded user control. Type myType =
> > ctrl.GetType();
> >
> > // Get SavePropertyEve nt event using reflection.
> > EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
> > if ( events != null )
> > {
> > // Assign event handler (does not work).
> > // PROBLEM: The following line does not work because ctrl is of
> > generic
> > UserControl type
> > // that does not define SavePropertyEve nt event.
> > ctrl.SaveProper tyEvent += new CommandEventHan dler(
> > SavePropertyEve nt_Raise );
> > // The following line could work, but C# does not provide such
> > construction:
> > // casting to variables of type Type. Should I use a Converter?
> > How?
> > ( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
> > SavePropertyEve nt_Raise );
> > }
> >
> > The question is how to cast the 'ctrl' variable to the type assigned > > to 'myType' variable.
> >
> > Any hints?
> > Thanks
> > Leszek Taratuta
> >
>
>

[Scott Allen]

Ah, I can see now what you need to do. I'm sure this can be done with reflection
- ASP.NET runtime does it all the time. Have you made any progress?

--
Scott
http://www.OdeToCode.com/blogs/scott/

Thanks.
I figured out this solution as well. The problem is that my user
controls
can implement many different events. I just gave an example of
SavePropertyEve nt, but there may be many other: LoadControlEven t,
ChangeIdEvent, RefreshParentEv ent etc. It means I would need to create
a
separate interface for each of those events:
ILoadControlEve nt, IChangeIdEvent, IRefreshParentE vent etc
I hoped there would be a more generic way to discover the type of user
control (using reflection or descriptors) in run-time and assign
proper event handlers.

For now it seems there is no generic way.

Thanks anyway,
Leszek
"William F. Robertson, Jr." <th****@nameht. org> wrote in message
news:Oy******** ******@TK2MSFTN GP10.phx.gbl...

You will look at the user control and see if it implements the
ISavePropertyEv ent interface, if it does, you will cast the generic
UserControl to a ISavePropertyEv ent to get the event to wire to.

I am not actually sure if this would work, but it compiled, but I
didn't actually run it.

<snippets>
public interace ISavePropertyEv ent
{
event CommandEventHan dler SavePropertyEve nt;
}
public myUserControl : UserControl : ISavePropertyEv ent
{
public event CommandEventHan dler SavePropertyEve nt;
}
UserControl control = Page.FindContro l( "myControlN ame" );
if ( control is ISavePropertyEv ent )
{
( ( ISavePropertyEv ent ) control).SavePr opertyEvent += new
CommandEventHan dler(...)
}
HTH,

bill

"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:OR******** ******@TK2MSFTN GP14.phx.gbl...

Sorry for confusion. I have sent just a part of code.

Actually I need to load many user controls of diffrent types. Some
of
them
define SavePropertyEve nt some not. The ASPX page need to assign
event handler for those user controls that define SavePropertyEve nt.

I wanted to create a generic code that would load user controls as
UserControl, then discover the specific derived type that defines
(or
not)
SavePropertyEve nt, and assign event handler to this event.

Thanks for reply anyway.

Any other suggestions?

Leszek Taratuta

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:53******** *************@m snews.microsoft .com...

I'm a little confused. Is there a reason you can't use:

MenuBar mb = (MenuBar)Page.L oadControl(...) ;
mb.SaveProperty Event += new CommandEventHan dler(...);
--
Scott
http://www.OdeToCode.com/blogs/scott/
> Hello,
>
> I have the following code:
>
> // Load the MenuBar.ascx user control. The control defines
> SavePropertyEve nt
> event.
> UserControl ctrl =
> (UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
> // Get type information of the loaded user control. Type myType =
> ctrl.GetType();
> // Get SavePropertyEve nt event using reflection.
> EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
> if ( events != null )
> {
> // Assign event handler (does not work).
> // PROBLEM: The following line does not work because ctrl is of
> generic
> UserControl type
> // that does not define SavePropertyEve nt event.
> ctrl.SaveProper tyEvent += new CommandEventHan dler(
> SavePropertyEve nt_Raise );
> // The following line could work, but C# does not provide such
> construction:
> // casting to variables of type Type. Should I use a Converter?
> How?
> ( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
> SavePropertyEve nt_Raise );
> }
> The question is how to cast the 'ctrl' variable to the type
> assigned to 'myType' variable.
>
> Any hints?
> Thanks
> Leszek Taratuta

[Leszek Taratuta]

This is a part of a real project with a deadline, so I had to move on with
other things.
Temporarily I just duplicated some code, without using reflection.

Thanks,
Leszek

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:54******** *************@m snews.microsoft .com...

Ah, I can see now what you need to do. I'm sure this can be done with reflection - ASP.NET runtime does it all the time. Have you made any progress?

--
Scott
http://www.OdeToCode.com/blogs/scott/

Thanks.
I figured out this solution as well. The problem is that my user
controls
can implement many different events. I just gave an example of
SavePropertyEve nt, but there may be many other: LoadControlEven t,
ChangeIdEvent, RefreshParentEv ent etc. It means I would need to create
a
separate interface for each of those events:
ILoadControlEve nt, IChangeIdEvent, IRefreshParentE vent etc
I hoped there would be a more generic way to discover the type of user
control (using reflection or descriptors) in run-time and assign
proper event handlers.

For now it seems there is no generic way.

Thanks anyway,
Leszek
"William F. Robertson, Jr." <th****@nameht. org> wrote in message
news:Oy******** ******@TK2MSFTN GP10.phx.gbl...

You will look at the user control and see if it implements the
ISavePropertyEv ent interface, if it does, you will cast the generic
UserControl to a ISavePropertyEv ent to get the event to wire to.

I am not actually sure if this would work, but it compiled, but I
didn't actually run it.

<snippets>
public interace ISavePropertyEv ent
{
event CommandEventHan dler SavePropertyEve nt;
}
public myUserControl : UserControl : ISavePropertyEv ent
{
public event CommandEventHan dler SavePropertyEve nt;
}
UserControl control = Page.FindContro l( "myControlN ame" );
if ( control is ISavePropertyEv ent )
{
( ( ISavePropertyEv ent ) control).SavePr opertyEvent += new
CommandEventHan dler(...)
}
HTH,

bill

"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:OR******** ******@TK2MSFTN GP14.phx.gbl...

Sorry for confusion. I have sent just a part of code.

Actually I need to load many user controls of diffrent types. Some
of

them

define SavePropertyEve nt some not. The ASPX page need to assign
event handler for those user controls that define SavePropertyEve nt.

I wanted to create a generic code that would load user controls as
UserControl, then discover the specific derived type that defines
(or

not)

SavePropertyEve nt, and assign event handler to this event.

Thanks for reply anyway.

Any other suggestions?

Leszek Taratuta

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:53******** *************@m snews.microsoft .com...

> I'm a little confused. Is there a reason you can't use:
>
> MenuBar mb = (MenuBar)Page.L oadControl(...) ;
> mb.SaveProperty Event += new CommandEventHan dler(...);
> --
> Scott
> http://www.OdeToCode.com/blogs/scott/
>> Hello,
>>
>> I have the following code:
>>
>> // Load the MenuBar.ascx user control. The control defines
>> SavePropertyEve nt
>> event.
>> UserControl ctrl =
>> (UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
>> // Get type information of the loaded user control. Type myType =
>> ctrl.GetType();
>> // Get SavePropertyEve nt event using reflection.
>> EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
>> if ( events != null )
>> {
>> // Assign event handler (does not work).
>> // PROBLEM: The following line does not work because ctrl is of
>> generic
>> UserControl type
>> // that does not define SavePropertyEve nt event.
>> ctrl.SaveProper tyEvent += new CommandEventHan dler(
>> SavePropertyEve nt_Raise );
>> // The following line could work, but C# does not provide such
>> construction:
>> // casting to variables of type Type. Should I use a Converter?
>> How?
>> ( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
>> SavePropertyEve nt_Raise );
>> }
>> The question is how to cast the 'ctrl' variable to the type
>> assigned to 'myType' variable.
>>
>> Any hints?
>> Thanks
>> Leszek Taratuta

[William F. Robertson, Jr.]

Did you see the reflection code to accomplish what you wanting to
accomplish?

bill

UserControl ctrl =
(UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
// Get type information of the loaded user control.
Type myType = ctrl.GetType();

// Get SavePropertyEve nt event using reflection.
EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
if ( events != null )
{
//this is how to dynamically add events using reflection.
events.AddEvent Handler( ctrl, new CommandEventHan dler(
SavePropertyEve nt_Raise ) );
}
"Leszek Taratuta" <ad*@taratuta.n et> wrote in message
news:OP******** ******@TK2MSFTN GP11.phx.gbl...

This is a part of a real project with a deadline, so I had to move on with
other things.
Temporarily I just duplicated some code, without using reflection.

Thanks,
Leszek

"Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
news:54******** *************@m snews.microsoft .com...

Ah, I can see now what you need to do. I'm sure this can be done with

reflection

- ASP.NET runtime does it all the time. Have you made any progress?

--
Scott
http://www.OdeToCode.com/blogs/scott/

Thanks.
I figured out this solution as well. The problem is that my user
controls
can implement many different events. I just gave an example of
SavePropertyEve nt, but there may be many other: LoadControlEven t,
ChangeIdEvent, RefreshParentEv ent etc. It means I would need to create
a
separate interface for each of those events:
ILoadControlEve nt, IChangeIdEvent, IRefreshParentE vent etc
I hoped there would be a more generic way to discover the type of user
control (using reflection or descriptors) in run-time and assign
proper event handlers.

For now it seems there is no generic way.

Thanks anyway,
Leszek
"William F. Robertson, Jr." <th****@nameht. org> wrote in message
news:Oy******** ******@TK2MSFTN GP10.phx.gbl...

> You will look at the user control and see if it implements the
> ISavePropertyEv ent interface, if it does, you will cast the generic
> UserControl to a ISavePropertyEv ent to get the event to wire to.
>
> I am not actually sure if this would work, but it compiled, but I
> didn't actually run it.
>
> <snippets>
> public interace ISavePropertyEv ent
> {
> event CommandEventHan dler SavePropertyEve nt;
> }
> public myUserControl : UserControl : ISavePropertyEv ent
> {
> public event CommandEventHan dler SavePropertyEve nt;
> }
> UserControl control = Page.FindContro l( "myControlN ame" );
> if ( control is ISavePropertyEv ent )
> {
> ( ( ISavePropertyEv ent ) control).SavePr opertyEvent += new
> CommandEventHan dler(...)
> }
> HTH,
>
> bill
>
> "Leszek Taratuta" <ad*@taratuta.n et> wrote in message
> news:OR******** ******@TK2MSFTN GP14.phx.gbl...
>
>> Sorry for confusion. I have sent just a part of code.
>>
>> Actually I need to load many user controls of diffrent types. Some
>> of
>>
them

>> define SavePropertyEve nt some not. The ASPX page need to assign
>> event handler for those user controls that define SavePropertyEve nt.
>>
>> I wanted to create a generic code that would load user controls as
>> UserControl, then discover the specific derived type that defines
>> (or
>>
not)

>> SavePropertyEve nt, and assign event handler to this event.
>>
>> Thanks for reply anyway.
>>
>> Any other suggestions?
>>
>> Leszek Taratuta
>>
>> "Scott Allen" <sc***@nospam.O deToCode.com> wrote in message
>> news:53******** *************@m snews.microsoft .com...
>>
>>> I'm a little confused. Is there a reason you can't use:
>>>
>>> MenuBar mb = (MenuBar)Page.L oadControl(...) ;
>>> mb.SaveProperty Event += new CommandEventHan dler(...);
>>> --
>>> Scott
>>> http://www.OdeToCode.com/blogs/scott/
>>>> Hello,
>>>>
>>>> I have the following code:
>>>>
>>>> // Load the MenuBar.ascx user control. The control defines
>>>> SavePropertyEve nt
>>>> event.
>>>> UserControl ctrl =
>>>> (UserControl)Pa ge.LoadControl( "~/MyApp/Controls/MenuBar.ascx");
>>>> // Get type information of the loaded user control. Type myType =
>>>> ctrl.GetType();
>>>> // Get SavePropertyEve nt event using reflection.
>>>> EventInfo events = myType.GetEvent ( "SavePropertyEv ent" );
>>>> if ( events != null )
>>>> {
>>>> // Assign event handler (does not work).
>>>> // PROBLEM: The following line does not work because ctrl is of
>>>> generic
>>>> UserControl type
>>>> // that does not define SavePropertyEve nt event.
>>>> ctrl.SaveProper tyEvent += new CommandEventHan dler(
>>>> SavePropertyEve nt_Raise );
>>>> // The following line could work, but C# does not provide such
>>>> construction:
>>>> // casting to variables of type Type. Should I use a Converter?
>>>> How?
>>>> ( (myType)ctrl ).SavePropertyE vent += new CommandEventHan dler(
>>>> SavePropertyEve nt_Raise );
>>>> }
>>>> The question is how to cast the 'ctrl' variable to the type
>>>> assigned to 'myType' variable.
>>>>
>>>> Any hints?
>>>> Thanks
>>>> Leszek Taratuta