How can Validate if one parameter is missing in a Web service Method

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Hi Guys, i have the next question.
if i have a method in a Web Service and this method need 1 parameter, but the person who is callin my web service not pass the parameter correctly. how can i validate that parameter before the function take it this if is missing or the datatype is in incorrect formtat? there´s a way to prevent this?
here put an example

VB

Dim sResult As DataSet
result = WebService.GetInformation("") ''Here should go the parameter, but assuming that the client is not assigned it

The Next code below is the web service.

VB

Public Function GetInformation(ByVal CodSeguridad As Integer) As DataSet ''here trow me an Error of dataTpye or if the parameter is missing

thanks in advance.

Posted 28-Jul-11 5:20am

Rene Bustos

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Manas Bhardwaj · Accepted Answer · 2011-07-28T05:25:00

Solution 1

There is no in built support for this, but wthese two articles might give you a direction:

http://msdn.microsoft.com/en-gb/magazine/cc164115.aspx[^]

http://msdn.microsoft.com/en-gb/magazine/cc164100.aspx[^]

Posted 28-Jul-11 5:25am

Manas Bhardwaj

Comments

Rene Bustos 29-Jul-11 9:39am

Manas. thanks for the answer. I hope stay in this site for a long time.

thanks i gona give you accepted solution, the links posted are very good.

see you later.From Mexico.

Manas Bhardwaj 29-Jul-11 9:43am

glad, it helped you!