ExecuteNonQuery returning -1 (vb+asp.net+sqlserver 2000)

[jzogg7272]

In my code I am executing a stored procedure to do a single row insert.
I check the return value of the execution and I am getting -1, whereas
a few weeks ago it was returning 0. Actually, I found that all of my
insert stored procs are returning -1. The stored proc/insert statement
is still executing successfully but the return code is different. If I
execute the procedure from SQL Query Analyzer with the same params, it
shows a return code of 0. But -1 is return back when it is executed
from code. Anyone know why?
FYI - I recently promoted 3 new stored procs; completely unrelated to
this functionality. That is all that has "changed" recently.

Here is some of the code:

nReturn = CInt(cmd.ExecuteNonQuery())

--Stored proc:

Procedure dbo.AddVehicle
/* Param List */
@license varchar(8),
@model_id int,
@year smallint,
@vin varchar(20),
@bar_code varchar(6),
@gas_card varchar(4)

AS
SET NOCOUNT ON

INSERT INTO Vehicles ( license, model_id, [year], vin, bar_code,
gas_card )
VALUES ( @license, @model_id, @year, @vin, @bar_code, @gas_card )

SET NOCOUNT OFF

 

[Guest]

According to the .NET v1.1 documentation...

For UPDATE, INSERT, and DELETE statements, the return value is the number of
rows affected by the command. For all other types of statements, the return
value is -1. If a rollback occurs, the return value is also -1.

 

[jzogg7272]

I confirmed that after the proc was called and -1 was returned, the
record had been inserted.