HResult

[lakshmi]

Hi
We are rewriting a COM object in C#. The COM object
returns HRESULT for invalid arguments, null values etc.
The HRESULT is created using the MAKE_HRESULT macro in C++.
1.What is the C# equivalent of MAKE_HRESULT?
2.How do I return a HRESULT or an exception from my C#
program that would indicate a FAILURE.
Any help is appreciated.
Thanks.

[Mickey Williams]

The general .NET pattern is to indicate failure with an exception rather
than return value.

--
Mickey Williams
Author, "Microsoft Visual C# .NET Core Reference", MS Press
www.servergeek.com
"lakshmi" <[e-mail]> wrote in message
news:10****************************@phx.gbl...

Hi
We are rewriting a COM object in C#. The COM object
returns HRESULT for invalid arguments, null values etc.
The HRESULT is created using the MAKE_HRESULT macro in C++.
1.What is the C# equivalent of MAKE_HRESULT?
2.How do I return a HRESULT or an exception from my C#
program that would indicate a FAILURE.
Any help is appreciated.
Thanks.

[lakshmi]

thanks Mickey, I'm actually reading your Visual C#.NET
core reference book.

-----Original Message-----
The general .NET pattern is to indicate failure with an exception ratherthan return value.

--
Mickey Williams
Author, "Microsoft Visual C# .NET Core Reference", MS Presswww.servergeek.com
"lakshmi" <[e-mail]> wrote in message
news:10****************************@phx.gbl...

Hi
We are rewriting a COM object in C#. The COM object
returns HRESULT for invalid arguments, null values etc.
The HRESULT is created using the MAKE_HRESULT macro in C++. 1.What is the C# equivalent of MAKE_HRESULT?
2.How do I return a HRESULT or an exception from my C#
program that would indicate a FAILURE.
Any help is appreciated.
Thanks.

.

[lakshmi]

The client checks for failed HRESULTS. When I throw an
exception from my C# dll for example, when an invalid
argument is passed, now the client acts as if it received
a success HRESULT. Thanks for your help.

-----Original Message-----
The general .NET pattern is to indicate failure with an exception ratherthan return value.

--
Mickey Williams
Author, "Microsoft Visual C# .NET Core Reference", MS Presswww.servergeek.com
"lakshmi" <[e-mail]> wrote in message
news:10****************************@phx.gbl...

Hi
We are rewriting a COM object in C#. The COM object
returns HRESULT for invalid arguments, null values etc.
The HRESULT is created using the MAKE_HRESULT macro in C++. 1.What is the C# equivalent of MAKE_HRESULT?
2.How do I return a HRESULT or an exception from my C#
program that would indicate a FAILURE.
Any help is appreciated.
Thanks.

.

[lakshmi]

thanks again.
Yes, the client checks for FAILED(hr).
I'm throwing ArgumentException,
ArgumentOutOfRangeException etc. from my C# code.

-----Original Message-----
"lakshmi" <[e-mail]> wrote in message
news:04****************************@phx.gbl...

The client checks for failed HRESULTS. When I throw an
exception from my C# dll for example, when an invalid
argument is passed, now the client acts as if it received

a success HRESULT. Thanks for your help.
What kind of exception are you throwing? Are you using

FAILED(hr)?
--
Mickey Williams
Author, "Microsoft Visual C# .NET Core Reference", MS Presswww.servergeek.com
>-----Original Message-----
>The general .NET pattern is to indicate failure with an

exception rather

>than return value.
>
>--
>Mickey Williams
>Author, "Microsoft Visual C# .NET Core Reference", MS

Press

>www.servergeek.com
>
>
>"lakshmi" <[e-mail]> wrote in message
>news:10****************************@phx.gbl...
>> Hi
>> We are rewriting a COM object in C#. The COM object
>> returns HRESULT for invalid arguments, null values etc. >> The HRESULT is created using the MAKE_HRESULT macro in

C++.

>> 1.What is the C# equivalent of MAKE_HRESULT?
>> 2.How do I return a HRESULT or an exception from my

C# >> program that would indicate a FAILURE.
>> Any help is appreciated.
>> Thanks.
>>
>>
>>
>
>
>.
>

.