“SqlParameterCollection only accepts non-null SqlParameter type objects, not String objects”

Question

I keep getting the exception

The SqlParameterCollection only accepts non-null SqlParameter type objects, not String objects

, while execut

Answer 1

I ran into the same error when I was using

cmd.Parameters.Add(pars)

where pars was a an array of SqlParameter. The issue was that I was using the Add() function but I should've used AddRange() instead.

cmd.Parameters.AddRange(pars)