Throwing custom exceptions from Web Services

[=?Utf-8?B?RGVlcGFrIFZpag==?=]

Hi,

I an using Web Services as my business layer and wanted to throw custom
exceptions from the web method based on some business logic.

Now, when I make a custom exception class bu inheriting from SoapException
class and throw it from a web method. I get below mentioned error message
when I run that method:

"System.InvalidOperationException: WebService.MyException cannot be
serialized because it does not have a default public constructor."

Can someone help?

Thanks,
Deepak Vij

[John Saunders [MVP]]

"Deepak Vij" <de********@nospam.nospamwrote in message
news:59**********************************@microsof t.com...

Hi,

I an using Web Services as my business layer and wanted to throw custom
exceptions from the web method based on some business logic.

Now, when I make a custom exception class bu inheriting from SoapException
class and throw it from a web method. I get below mentioned error message
when I run that method:

"System.InvalidOperationException: WebService.MyException cannot be
serialized because it does not have a default public constructor."

Can someone help?

Add:

public MyException()
{
}
--
John Saunders [MVP]

[=?Utf-8?B?RGVlcGFrIFZpag==?=]

Sorry, could not understand. can you pelase elaborate?
--
Thanks,
Deepak Vij
Technical Manager
WNS NA Inc., NA
de********@firstmagnus.com
"John Saunders [MVP]" wrote:

"Deepak Vij" <de********@nospam.nospamwrote in message
news:59**********************************@microsof t.com...

Hi,

I an using Web Services as my business layer and wanted to throw custom
exceptions from the web method based on some business logic.

Now, when I make a custom exception class bu inheriting from SoapException
class and throw it from a web method. I get below mentioned error message
when I run that method:

"System.InvalidOperationException: WebService.MyException cannot be
serialized because it does not have a default public constructor."

Can someone help?

Add:

public MyException()
{
}
--
John Saunders [MVP]

[John Saunders [MVP]]

"Deepak Vij" <de********@nospam.nospamwrote in message
news:04**********************************@microsof t.com...

Sorry, could not understand. can you pelase elaborate?

The error message says that you need to add a parameterless constructor. The
code I posted is a parameterless constructor. Add it.
--
John Saunders [MVP]

[Steven Cheng[MSFT]]

Hi Deepak,

As the error message indicate, your custom exception class doesn't have a
default constructor(parameterless constructor), is this the actual case for
your scenario?

============
"System.InvalidOperationException: WebService.MyException cannot be
serialized because it does not have a default public constructor."
============

also, here are some other articles discussing on webservice exception
handling or customization:

http://msdn2.microsoft.com/en-us/lib...tk(VS.71).aspx

http://support.microsoft.com/kb/833379
Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

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[Steven Cheng[MSFT]]

Hi Deepak,

How are you doing on this issue, have you got any progress? If there is
still anything we can help, please feel free to post here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead
This posting is provided "AS IS" with no warranties, and confers no rights.