public class APIBase : ApiController

    {

        protected GZDBHelper.IDatabase db;

        public APIBase()

        {

            string sql = GZDBHelper.ConnectionStrings.BuildMSSQLConnectionString("local", "WDKB", "sa", "test");

            db = GZDBHelper.DatabaseFactory.CreateDatabase(sql, GZDBHelper.ConnectionStrings.ProviderNames.ProviderNameForMSSql, null);

        }

    }

 public class SqlParameterProvider : DbParameterBase

    {

        //DbParameter GenerateParmeter(string parameterName, object value);

        //DbParameter GenerateParmeter(string parameterName, SqlDbType dbType);

        //DbParameter GenerateParmeter(string parameterName, SqlDbType dbType, int size);

        //DbParameter GenerateParmeter(string parameterName, SqlDbType dbType, int size, string sourceColumn);

        //protected abstract DbParameter GenerateParmeter(string parameterName, SqlDbType dbType, int size, string sourceColumn, ParameterDirection direction);

        //DbParameter GenerateParmeter(string parameterName, SqlDbType dbType, int size, ParameterDirection direction, bool isNullable, byte precision, byte scale, string sourceColumn, DataRowVersion sourceVersion, object value);

        //DbParameter SqlParameter(string parameterName, SqlDbType dbType, int size, ParameterDirection direction, byte precision, byte scale, string sourceColumn, DataRowVersion sourceVersion, bool sourceColumnNullMapping, object value, string xmlSchemaCollectionDatabase, string xmlSchemaCollectionOwningSchema, string xmlSchemaCollectionName);

        public void AddParameter(string parameterName, object value)

        {

            SqlParameter parm = new SqlParameter(parameterName, value);

            AddParameter(parm);

        }

        public void AddParameter(string parameterName, SqlDbType dbType, object value)

        {

            SqlParameter parm = new SqlParameter(parameterName, dbType);

            parm.Value = value;

            AddParameter(parm);

        }

        public void AddParameter(string parameterName, SqlDbType dbType, int size, object value)

        {

            SqlParameter parm = new SqlParameter(parameterName, dbType, size);

            parm.Value = value;

            AddParameter(parm);

        }

        public void AddParameter(string parameterName, SqlDbType dbType, int size, object value, ParameterDirection direction)

        {

            SqlParameter parm = new SqlParameter(parameterName, dbType, size);

            parm.Value = value;

            parm.Direction = direction;

            AddParameter(parm);

        }

        public void AddParameter(string parameterName, SqlDbType dbType, int size, object value, string sourceColumn)

        {

            SqlParameter parm = new SqlParameter(parameterName, dbType, size, sourceColumn);

            parm.Value = value;

            AddParameter(parm);

        }

    }