That looks promising, but no success yet.
When the connection is opened, and the QZDASOINIT job starts, it shows this in the joblog:
The following special registers have been set: CLIENT_APPLNAME: {.NET assembly name here}
Then the .NET code executes the SYSPROC.WLM_SET_CLIENT_INFO() stored procedure, and this joblog msg appears:
The following special registers have been set: CLIENT_USERID: CLIENT_APPLNAME, CLIENT_WRKSTNNAME: PGM1
Here's the .NET code:
                Using _db2ClientName As New iDB2DataAdapter
                    With _db2ClientName
                        .SelectCommand = db2Connection.CreateCommand()
                        .SelectCommand.CommandText = "SYSPROC.WLM_SET_CLIENT_INFO"
                        .SelectCommand.CommandType = CommandType.StoredProcedure
                        '  parameters
                        .SelectCommand.Parameters.Add("Register", iDB2DbType.iDB2VarChar, 255)
                        .SelectCommand.Parameters("Register").Direction = ParameterDirection.Input
                        .SelectCommand.Parameters("Register").Value = "CLIENT_APPLNAME"
                        .SelectCommand.Parameters.Add("Value", iDB2DbType.iDB2VarChar, 255)
                        .SelectCommand.Parameters("Value").Direction = ParameterDirection.Input
                        .SelectCommand.Parameters("Value").Value = "PGM1"
                        .SelectCommand.ExecuteNonQuery()
                    End With
                End Using
-----Original Message-----
From: Rob Berendt [mailto:rob@xxxxxxxxx] 
Sent: Thursday, October 03, 2019 7:54 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: .NET & CLIENT_APPLNAME
Couldn't you use one of the methods outlined below?
https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_74/db2/rbafzcurclappl.htm
Probably the easiest way being
https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_74/rzajq/rzajqprocwlmsetclientinfo.htm
Rob Berendt
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