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Posted 25 Jul 2012


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How to invoke a Web Service from a Stored Procedure

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4.91/5 (65 votes)
26 Jul 2012CPOL2 min read
Learning how to make a call to a Web Service from a Stored Procedure.


On one occasion an old friend, was planning some applications  using NET and sockets, and needed to call a WebServices from a stored procedure.

In this article I will share this experience so that other programmers can learn to call a WebService sending parameters from a Stored Procedure. 

Step 1 

We must create our WebServices Project in Visual Studio.

Image 1

Step 2 

Then proceed to create the methods that we use in our service, in my case believe 6 methods which are:  Greet (string Param1) and expects a String as the parameter, HelloWord() does not expect any parameters, and the  Add, subtract, and Divide proliferation (Num1 int, int num2) want  two integers as parameters.

Image 2

Step 3 

Proceed to create our stored procedure that will have all the code to invoke the Web Services we have just created, as in all my articles database I use is AdventureWorks, which is the basis of test data that brings SQL Server.

Image 3

Step 4 

Then publish the web service on our IIS Web Server

Image 4

Image 5

Step 5 

We proceed to our Store Procedure Coding the data of our Web Service.

Image 6

Step 6 

In the procedure to create, we pass a parameter which is the parameter that is waiting Saludar() method, if they want to use the other methods, should create another parameter because as I mentioned above the other methods are expecting 2 parameters integer type. 

Something that is also very important when using the sp_OAMethod Stored Procedure this awaiting the POST or GET method, default almost always send POST, but if we sent this method, we can not display the XML reading generated by our Web Service, so we must use the GET method.

Image 7

Step 7 

Proceed to test our Web Service through your browser, type the address of the IIS where the published our Web Service. http://localhost/WebServices/Service1.asmx in the same show all the methods that  we created in our Web Service.

Image 8

Step 8 

Select the method that we use and invoke from our Stored Procedure, Saludar(). Then proceed to write the parameter you want to happen to the Web Service,  after this we click on Invoke.

Image 9

Step 9  

After that it will open another page in your browser, the information contained in XML and the parameter to write.

Image 10

Step 10   

We proceed to execute the stored procedure we just created to invoke our web service.

Image 11

Step 11    

After running our procedure and send our parameters we get the same result we got when we run it through your browser.

Image 12


Look at the comparison and noticed that the same result.

Image 13


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Omar Frometa
Dominican Republic Dominican Republic
MCTS - SQL Server 2008
Microsoft Certified Technology Specialist

CETEX - Exactus ERP
Exactus Technician Certificate

Comments and Discussions

QuestionGetting a null response. Pin
PulkitGulati14-Jul-13 17:04
MemberPulkitGulati14-Jul-13 17:04 
AnswerRe: Getting a null response. Pin
khader abdul20-Aug-13 23:24
Memberkhader abdul20-Aug-13 23:24 
GeneralRe: Getting a null response. Pin
John Giblin31-Mar-15 4:14
MemberJohn Giblin31-Mar-15 4:14 
GeneralMy vote of 5 Pin
Shrikant21927-Jun-13 0:18
MemberShrikant21927-Jun-13 0:18 
GeneralMy vote of 5 Pin
prosthor30-May-13 1:53
Memberprosthor30-May-13 1:53 
GeneralMy vote of 5 Pin
Sheikh Muhammad Haris26-Feb-13 21:39
MemberSheikh Muhammad Haris26-Feb-13 21:39 
QuestionError Pin
walder gonzalez27-Dec-12 10:52
Memberwalder gonzalez27-Dec-12 10:52 
GeneralMy vote of 2 Pin
Eric Lapouge21-Nov-12 6:43
MemberEric Lapouge21-Nov-12 6:43 

Not that I think your work isn't good, just it's that better solutions exist.

Beside this, I remind to have read somewhere that the used method (instantiation of COM objects from inside a stored-procedure) is obsolete.

You should, for example, have a look at The solution exposed in the linked article is a more "natural way" to do it.


modified 21-Nov-12 12:52pm.

GeneralMy vote of 5 Pin
Sperneder Patrick31-Oct-12 5:43
professionalSperneder Patrick31-Oct-12 5:43 
QuestionExcellent Pin
Musthafa (Member 379898)21-Oct-12 16:26
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GeneralMy vote of 5 Pin
Ștefan-Mihai MOGA8-Aug-12 5:45
professionalȘtefan-Mihai MOGA8-Aug-12 5:45 
GeneralMy vote of 5 Pin
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professionalKanasz Robert5-Aug-12 9:55 
GeneralMy vote of 5 Pin
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GeneralMy vote of 5 Pin
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GeneralMy vote of 5 Pin
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GeneralMy vote of 5 Pin
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GeneralMy vote of 4 Pin
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GeneralThanks & Question Pin
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GeneralRe: Thanks & Question Pin
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GeneralRe: Thanks & Question PinPopular
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GeneralRe: Thanks & Question Pin
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