Asynchronous Execution in ADO.NET 2.0
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by Satheesh Babu
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User Comments

Title: f   
Name: f
Date: 2012-09-29 7:03:06 AM
Comment:
f
Title: thank you   
Name: khoa
Date: 2011-06-12 7:21:13 PM
Comment:
very good code and article
Title: Code Monkey   
Name: King Kong
Date: 2009-10-29 12:20:15 PM
Comment:
This is a great article. Very concise and to the point.
Title: InvalidOperation exception   
Name: Ross
Date: 2009-01-29 9:36:34 AM
Comment:
Kevin - Is the DB connection still open at the point you call EndExecuteReader()?
Title: InvalidOperation exception   
Name: Kevin Burton
Date: 2008-12-18 11:42:00 PM
Comment:
I have some code that I was trying to improve by adding the new asynchronous SQL methods Begin... and End.... But when I add it to my code I get an exception:

InvalidOperationException.
{"The asynchronous operation has already completed."}

The first few frames of the stack trace look like:

at System.Data.SqlClient.SqlCommand.VerifyEndExecuteState(DbAsyncResult
dbAsyncResult, String endMethod)
at System.Data.SqlClient.SqlCommand.InternalEndExecuteReader(IAsyncResult
asyncResult, String endMethod)
at System.Data.SqlClient.SqlCommand.EndExecuteReader(IAsyncResult
asyncResult)

In searching the internet I see that at least one other person has seen this problem. I was wondering if there is a work around? If anyone has gotten the asynchronous methods to work without this exception I would very much appreciate their tips. I would also welcome a confirmation message of simply "this is a known bug".

Comments?

Thank you.

Kevin
Title: very useful   
Name: RuneAletheia
Date: 2008-12-16 3:24:03 PM
Comment:
this article was very helpful at explaining basic implementation of async -- also, the updated link to the reference is:

http://nayyeri.net/blog/Asynchronous-command-execution-in-NET-2-0/
Title: Very Good   
Name: Sunil Dhiman
Date: 2008-07-04 12:17:38 AM
Comment:
this article helped me very much.
thanks.
Title: Very Good   
Name: Samim Mondal
Date: 2008-04-02 3:16:42 AM
Comment:
Its very good article....
Title: RE:Thank you   
Name: satheesh babu
Date: 2008-03-24 12:55:18 PM
Comment:
Thanks for the comments guys!!
Satheesh
http://www.codedigest.com
Title: Thank you   
Name: Beri
Date: 2008-03-24 12:51:21 PM
Comment:
I've been struggling to make sense of Asynchronous Transcations. This article has helped me a lot. Thank you very much Sateesh.
Title: Mrs   
Name: JayaNayagam
Date: 2008-01-07 1:14:14 AM
Comment:
The author explains quite clearly,quite useful.
Title: Nice info   
Name: Abhishek Kumar Singh
Date: 2007-12-20 4:41:16 AM
Comment:
nice one

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