Concurrency_exception

[shankar_it]

I am using .net 1.1 and i am trying to catch CONCURRENCY_EXCEPTION and throw a message for that exception using the code

if(ex.Message == "CONCURRENCY_EXCEPTION")
{
MessageBox.Show("This record has been updated since you opened it. Please close the record and re-open it.");
}

it works when i try to compile it in my machine but after deploying the code it does not catch this error.It just give a general "Server encountered an internal error".

Can any one help me in this.

 

[snarfblam]

Maybe you should post the whole try/catch block, because from what you've posted I can't see a possible cause.

 

[shankar_it]

private void HandleUnhandledExceptions(Exception ex)
{
MessageBox.Show(ex.ToString());
if(ex.Message == "CONCURRENCY_EXCEPTION")
{
MessageBox.Show("This record has been updated since you opened it. Please close the record and re-open it.");
}
else
{
GlobalUI.DisplayFatalErrorMessage();
}

if((ex.Message != "SERVER_EXCEPTION") && (ex.Message != "CONCURRENCY_EXCEPTION"))
{
ServiceObj.LogClientException(ex);
}
// //TODO if an exception occurs inside frmMain, this would close active form which would not be expected behavior.
// //need to resolve.
// if (this.ActiveMdiChild != null)
// {
// this.ActiveMdiChild.Dispose();
// }
}

 

[shankar_it]

I am using remoting here

 

[shankar_it]

am using remoting here and when i tryed to google for this problem in internet some ppl have sugested to use

<customErrors mode="on" /> and i have used this in the webconfig file of the server but it still dosen't work

I am using remoting here

 

[Gill Bates]

There's still not enough to work with. But, if I were you, I would not drive your logic off of string comparisons with the .Message property. Do something like this instead:

if (ex is NullReferenceException)
{
    // do something
}
else if (ex is MissingMemberException)
{
    // do something
}
else
{
    // ex is some other type of exception
}

 

[shankar_it]

have any idea of what will i have to use instead of the string "CONCURRENCY_EXCEPTION"

 

[PlausiblyDamp]

If you do not catch the exception what does it say on the error dialog? Or if you put a breakpoint on the catch block what type does the debugger say ex is?

 

[shankar_it]

It gives a error called "message: 'Server encoutered an internal error. for more information, turn on the customErrors in server's .config file'" when i deploy it in the server with the ex as "sever_exception" but when i compile it in the local machine it works properly and the ex vaule is "concurrency_exception" and it goes into the if block and displays the message i have typed

 

[shankar_it]

I did turn off the customErrors in webconfig file

<customErrors mode="off" /> and it worked.

 

[Gill Bates]

If you were to use my approach, the Message would not matter. Using string comparisons like that to drive logic is generally a bad idea.