June 17, 2022 at 10:45 am
Hi there
Im not sure if this should be asked on a C# forum, but im taking a shot here. We have a C# Application which using ADO.Net , executes SQL Stored procedures.
In fact the application calles SQL stored procedures in Parallel.
The issue we have is trying to achieve Parallel execution in c#
When we start up the application, we get the following error message
System.ArgumentException: 'The SqlParameter is already contained by another SqlParameterCollection.'
(Please see attached screenshot)
The thing is from the SQL profile trace , i can see that the actual stored procedure spSetChannelReading has completed execution...
We put a lock in c# but this leads to single threading which is slow and not desirable.
So my question is that how do you do parrallel execution of stored procedures in a C# application without encountering this error?
June 17, 2022 at 10:57 am
That looks more like a C# error than a SQL issue.
A brief Google search suggested this.
If you haven't even tried to resolve your issue, please don't expect the hard-working volunteers here to waste their time providing links to answers which you could easily have found yourself.
June 17, 2022 at 11:14 am
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June 17, 2022 at 2:48 pm
Thanks Phil. Yeah I saw that article and tried cmd.Parameters.Clear but to no avail.
June 20, 2022 at 11:39 am
I think the problem is that you're trying to use the same parameter for two procedures that are running concurrently. You'll need to have a separate set of parameters for each procedure; you can set multiple parameters to the same value, but you can't share the parameters themselves.
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