Getting unable to cast error (when same object is referenced in client and web service)

  • Thread starter Thread starter Rahul
  • Start date Start date
R

Rahul

I am getting following error:

1) For a xml file "Request.xml" we created a schema "Request.xsd".

2) With the help of xsd.exe we got the C# file Request.cs.

3) We tried to send the object of Request.cs to a webservice method
SaveRequest(Request req).

4) Scenario is like same Request.cs is referenced by both server and
client.

5)When we are trying to pass the req object of type Request we are getting
unable to cast error.

Is this expected? If so, are there any workarounds?


Please help us in solving this.

Thanks !!!!!
 
Rahul said:
I am getting following error:

1) For a xml file "Request.xml" we created a schema "Request.xsd".

2) With the help of xsd.exe we got the C# file Request.cs.

3) We tried to send the object of Request.cs to a webservice method
SaveRequest(Request req).

4) Scenario is like same Request.cs is referenced by both server and
client.

5)When we are trying to pass the req object of type Request we are getting
unable to cast error.

Is this expected? If so, are there any workarounds?
Click to expand...

This is expected. The classes on the client side are proxy classes only -
they are not meant to be the same as the server-side classes. Their only
purpose is to make it easier for you to call the web methods exposed by the
server.

In fact, if you ever get a situation with ASMX web services where you have
the same class on the client and the server, then you've almost certainly
made a very serious mistake.
 
Hi John,
I've went through similar steps as Rahul, which is that I created a class by
using xsd.exe, I have a web service which return this serialized class. I
declared a variable as this class, and assign the return value of my web
service to the variable, I got compiling error "Cannot implicitly convert
type MyWebServiceTest.MyService.GetUserInfoResponseGetUserInfoResult to
User".

How can I get result from my web service?

Thanks.

William
 
william said:
Hi John,
I've went through similar steps as Rahul, which is that I created a class
by
using xsd.exe, I have a web service which return this serialized class. I
declared a variable as this class, and assign the return value of my web
service to the variable, I got compiling error "Cannot implicitly convert
type MyWebServiceTest.MyService.GetUserInfoResponseGetUserInfoResult to
User".

How can I get result from my web service?
Click to expand...

William, that error message you posted seems to be cut off. Surely the
message doesn't end with the word "User".
 
Hi John,

Actually my class name is "User", I declares a type as "User" on client
side, and tried to assign the return value of web service to it.Thanks.

William
 
william said:
Hi John,

Actually my class name is "User", I declares a type as "User" on client
side, and tried to assign the return value of web service to it.Thanks.
Click to expand...

Ok, but it looks like the proxy class (on the client) is returning type
MyWebServiceTest.MyService.GetUserInfoResponseGetUserInfoResult. I bet this
type has a property inside of it with the type User.
 
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