This is from the Microsoft enterprise library.  You can see the definition here: http://msdn.microsoft.com/en-us/library/bb748706(BTS.10).aspx

I'm trying to do something like this to no avail:

Dim myParams() As Object = {"Val1", "Val2"}
        Dim myReader As SqlDataReader = DatabaseFactory.CreateDatabase().ExecuteReader("usp_Test", myParams)

It gives me a runtime error saying the number of parameters does not match.  My stored proc takes two varchar(10) parameters.  

Anyone know what I'm doing wrong?

 I have my DAAB calls abstracted away. Here is an example of how I use them. Note: I utilize the SafeDataReader from the CSLA framework to give me more IDataReader goodness :) :

            SqlParameter[] arParams = new SqlParameter[4];

            arParams[0] = new SqlParameter("@lon", vLongitude);
            arParams[1] = new SqlParameter("@lat", vLatitude);
            arParams[2] = new SqlParameter("@Miles", vMiles);
            arParams[3] = new SqlParameter("@AppType", vAppType);

            List<LatLong> lLatLongs = new List<LatLong>();

            using (SafeDataReader dr = new SafeDataReader(ExecuteReader("spGetThreats", CommandType.StoredProcedure, arParams)))
            {

                while (dr.Read())
                {
                    lLatLongs.Add(new LatLong(dr.GetDecimal("Longtitude"), dr.GetDecimal("Latitude"),
                        dr.GetString("Name"));
                }

            }
            
            return lLatLongs;

 Here is how I abstracted ExecuteDataReader in my framework:

        #region " DataReader "

        public SqlDataReader ExecuteReader(string sqlCommand)
        {
            return this.ExecuteReader(sqlCommand, CommandType.StoredProcedure, null);
        }

        public SqlDataReader ExecuteReader(string sqlCommand, CommandType ct)
        {
            return this.ExecuteReader(sqlCommand, ct, null);
        }

        public SqlDataReader ExecuteReader(string sqlCommand, CommandType ct, string Param, object ParamValue)
        {
            SqlParameter[] arParam = new SqlParameter[] { new SqlParameter(Param, ParamValue) };
            return this.ExecuteReader(sqlCommand, ct, arParam);
        }

        public SqlDataReader ExecuteReader(string sProc, CommandType ct, SqlParameter[] arParam)
        {
            Database database = DatabaseFactory.CreateDatabase(ConnectionString);
            DbCommand storedProcCommand = database.GetStoredProcCommand(sProc);
            if (null != arParam)
            {
                foreach (SqlParameter parameter in arParam)
                {
                    database.AddInParameter(storedProcCommand, parameter.ParameterName,
                        parameter.DbType, parameter.Value);
                }
            }
            return (SqlDataReader)database.ExecuteReader(storedProcCommand);
        }

        #endregion