I hava a question as below:
* Web Service
* C#
* paramter with image data

I wrote webservice with one method Test.
When i am trying to return a simple string it works form test client.
When i am trying to return an XML as a string the client throws an error.
"An unhandled exception of type 'System.InvalidOperationException' occurred

My web service needs a value from the request querystring.  So I do a
string topic = Request.QueryString["topic"];
But Visual Studio says "The type or namespace name 'Request' could not
be found (are you missing a using directive or an assembly reference?)"

I created a custom exception for my web service using VS.Net and it's
ASP.Net web service tools. Its base class derived from System.Exception and
I have a WinForm client that references the web service. But when I
referenced my Web Service, it did not pick up our custom exception ...

I have the problem that when the windowsform do a call to a webbservice it
will timeout after about 90 sekund in the middle of making inovice's.
How can I make the timeout value bigger.
It's not any sqlconnection timeout, it's a webb service timeout I get.

My WebSite uses a webservice to get some data. Problem is that the url for
the webservice is different when it is running on de webserver than when it
is running localy, when it is built.
When the website needs the webservice I read the correct url from the

Can someone explain why HTTP Post fails when implementing this simple
webmethod?
[WebMethod]
public XmlNode Echo(XmlNode doc) {

Further to my problem with my HTTP 500 Internal Server Error, I recieve the
following error if I try to run the Service directly on the Web Server that
hosts both the SQL Server and the IIS. The Web Service simply opens a SQL
Connection Runs a Stored Procedure and returns a database ...

Hi Team,
I just want to know whether any alternative is there to access Web Service
Method than using SOAP Tool kit & Call.
Early reply is greatly appreciated.

I have downloaded WSE 2.0. And I see a directory called
HelpFiles. How do I actually see the help?
I tried reading up the microsoft help 2 web site but that
confused me even further.

I am developing a ASP.NET web application which consumes a web service from
a remote machine...the problem that i am frequently facing is that
application is not responding (it just stays on the start page itself - when
doing F5 or CTRL+F5), but many time it is running fine..not ...

I'm trying to use a 3rd party DLL, which I have no control over, in my
WebService (written in C#). However, every time my WebService tries to
call one of the dllimport-ed methods it simply never returns from the
call. I know the DLL is there and it works well in many console and

I'm wondering what happend when two separate clients create two
instances of the same remote web service.
I know that each client is essentially creating local stub
object/wrapper that will make the invocations on the web service on

I have installed VB.NET 2003 on my machine. Whenever I write a web service
or web page of any type that uses ADO to connect to a SQL Database I get a
HTTP Error 500 Internal Server Error. I have tried connecting to local SQL,
Remote SQL, have the service run on a personal web server ...

Hi!  everybody,
I've built a web services using VB.NET 2003 and runs on IIS 5 under Windows
2000 Server.  My problem is that when the process is longer than 2 min.
(appox.), the following exception is returned.  But if the process is