Late binding with c#

[John Clennett]

I'm trying to write a c# command line app that runs report dll's at set
times. The dll's are written in c# with a common interface so by passing the
object name from the command line I can create ao instance ot the object &
create the report.

In VB I used code like:
Set obj = CreateObject(ob jName)
Call obj.Init(databa seName, fromDate, toDate)

I've tried the c# code:
System.Type oType = System.Type.Get TypeFromProgID( "rptName.Init") ;
object obj = System.Activato r.CreateInstanc e(oType);
oType.InvokeMem ber("createRepo rt",
System.Reflecti on.BindingFlags .InvokeMethod, null,0, new object[]{})
obj.createRepor t(dbName,fromDa te,toDate);

but so far not been able to get it to work.

I'm sure I'm just missing something silly but at present can't see it, Maybe
because it's Friday!!!

Any help/advise would be welcome.

Thanks,
John

[David Anton]

RE: Late binding with c#

objType.InvokeM ember("Init", System.Reflecti on.BindingFlags .InvokeMethod,
null, obj, new object[] {databaseName, fromDate, toDate});

You were passing '0' instead of 'obj'.
--
David Anton

https://www.tangiblesoftwaresolutions.com

Instant C#: VB to C# converter
Instant VB: C# to VB converter
Instant C++: C# to C++ converter
Instant C++: VB to C++ converter


"John Clennett" wrote:
[color=blue]
> I'm trying to write a c# command line app that runs report dll's at set
> times. The dll's are written in c# with a common interface so by passing the
> object name from the command line I can create ao instance ot the object &
> create the report.
>
> In VB I used code like:
> Set obj = CreateObject(ob jName)
> Call obj.Init(databa seName, fromDate, toDate)
>
> I've tried the c# code:
> System.Type oType = System.Type.Get TypeFromProgID( "rptName.Init") ;
> object obj = System.Activato r.CreateInstanc e(oType);
> oType.InvokeMem ber("createRepo rt",
> System.Reflecti on.BindingFlags .InvokeMethod, null,0, new object[]{})
> obj.createRepor t(dbName,fromDa te,toDate);
>
> but so far not been able to get it to work.
>
> I'm sure I'm just missing something silly but at present can't see it, Maybe
> because it's Friday!!!
>
> Any help/advise would be welcome.
>
> Thanks,
> John
>
>[/color]

[John Clennett]

RE: Late binding with c#

What I'm getting at present is the Type is not being created.
After the following line is executed the Type is still <undefined value>
System.Type oType = System.Type.Get TypeFromProgID( "rptName.Init") ;

Documentation on GetTypeFromProg ID states that it's for compatability with
COM objects & that it's superceded with namespaces in .NET. As the dll's are
written in c# do I have to use another method to late bind?

Thanks for the help,
John

"David Anton" wrote:

objType.InvokeM ember("Init", System.Reflecti on.BindingFlags .InvokeMethod,
null, obj, new object[] {databaseName, fromDate, toDate});
>
You were passing '0' instead of 'obj'.
--
David Anton

https://www.tangiblesoftwaresolutions.com

Instant C#: VB to C# converter
Instant VB: C# to VB converter
Instant C++: C# to C++ converter
Instant C++: VB to C++ converter
>
>
"John Clennett" wrote:
>

I'm trying to write a c# command line app that runs report dll's at set
times. The dll's are written in c# with a common interface so by passing the
object name from the command line I can create ao instance ot the object &
create the report.

In VB I used code like:
Set obj = CreateObject(ob jName)
Call obj.Init(databa seName, fromDate, toDate)

I've tried the c# code:
System.Type oType = System.Type.Get TypeFromProgID( "rptName.Init") ;
object obj = System.Activato r.CreateInstanc e(oType);
oType.InvokeMem ber("createRepo rt",
System.Reflecti on.BindingFlags .InvokeMethod, null,0, new object[]{})
obj.createRepor t(dbName,fromDa te,toDate);

but so far not been able to get it to work.

I'm sure I'm just missing something silly but at present can't see it, Maybe
because it's Friday!!!

Any help/advise would be welcome.

Thanks,
John