Is there a sane way to get a list of expected parameters from an SqlDataSource given the name of the stored procedure assigned to its SelectCommand property?
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4 Answers
You can use the SqlCommandBuilder.DeriveParameters method to return information on the parameters associated with a stored procedure. Iterating over the collection will allow you to determine the parameter name, data type, direction, etc.
SqlCommand cmd = new SqlCommand();
SqlConnection conn = new SqlConnection("myConnectionString");
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "myStoredProcName";
cmd.Connection = conn;
conn.Open();
SqlCommandBuilder.DeriveParameters(cmd);
conn.Close();
SqlParameterCollection collection = cmd.Parameters;
Take a look at the SqlParameterCollection and SqlParameter class definitions for more information.
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I am not sure if you can do it in the ADO.NET environment directly, somehow - but you could always query the "sys" system views to get that information:
select * from sys.parameters
where object_id in
(select object_id from sys.procedures where name = 'YourSProc')
Marc
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I dont have VS.NET to try it out, but .Prepare() may do this for you :)
Or you could just add the parameters. :)
Comments
And also with:
EXEC sp_sproc_columns 'YourSProc'
