beefeater267
Programmer
- Apr 6, 2005
- 79
- 0
- 0
Hi,
I have a VS.NET 2003 project that I am converting to .NET 2.0 / VS.NET 2005. So, basically I have a web service and a web app that consumes the service. So, from VS.NET 2003, I could make calls like:
webService.BeginFoo and webService.EndFoo
But, when I began porting over my code, I noticed that things have changed and that there is no longer Begin.. and End... functions, but rather FooAsync and event handlers.
So, I modified my code to call the FooAsync and wired up a ...Completed event handler to the web service object. However, now I am getting runtime errors like:
Async call is not valid in this context...... add AddOnPreRenderCompleteAsync, etc.... something like that.... So, I tried to add the call such as:
AddOnPreRenderCompleteAsync(new BeginEventHandler(...), new EndEventHandler(...))
But, i don't exactly know what to put in the (...) places. It looks for a function like IAsyncResult = .......
It doesn't make sense why i would have to do this..... i thought by adding event handling for async calls, Begin.... / End.... is obsolete
Can anyone provide an example / explanation?
I have a VS.NET 2003 project that I am converting to .NET 2.0 / VS.NET 2005. So, basically I have a web service and a web app that consumes the service. So, from VS.NET 2003, I could make calls like:
webService.BeginFoo and webService.EndFoo
But, when I began porting over my code, I noticed that things have changed and that there is no longer Begin.. and End... functions, but rather FooAsync and event handlers.
So, I modified my code to call the FooAsync and wired up a ...Completed event handler to the web service object. However, now I am getting runtime errors like:
Async call is not valid in this context...... add AddOnPreRenderCompleteAsync, etc.... something like that.... So, I tried to add the call such as:
AddOnPreRenderCompleteAsync(new BeginEventHandler(...), new EndEventHandler(...))
But, i don't exactly know what to put in the (...) places. It looks for a function like IAsyncResult = .......
It doesn't make sense why i would have to do this..... i thought by adding event handling for async calls, Begin.... / End.... is obsolete
Can anyone provide an example / explanation?
