BeginExecuteNonQuery without EndExecuteNonQuery

Question

I have the following code:

using (SqlConnection sqlConnection = new SqlConnection(\"blahblah;Asynchronous Processing=true;\")
{
    using (SqlCommand command         


        

Answer 1

1. You can't close the connection after you submit the BeginExceuteNotQuery. It will abort the execution. Remove the using block.

2. In order to close the connection, you must know when the call has completed. For that you must call EndExecuteNonQuery, usually from a callback:

.

command.BeginExecuteNonQuery(delegate (IAsyncResult ar) {
   try { command.EndExecuteNonQuery(ar); }
   catch(Exception e) { /* log exception e */ }
   finally { sqlConnection.Dispose(); }
   }, null);

If you want to submit a query and don't care about the results, see Asynchronous T-SQL execution for a reliable pattern that ensures execution even if client diconnects or crashes.