BlogEngine.Core.Providers.DbBlogProvider.DeleteOldReferrers C# (CSharp) Method

        private void DeleteOldReferrers()
        {
            using (var conn = this.CreateConnection())
            {
                if (conn.HasConnection)
                {
                    using (var cmd = conn.CreateTextCommand(string.Format("DELETE FROM {0}Referrers WHERE BlogId = {1}BlogId AND ReferralDay < {1}ReferralDay", this.tablePrefix, this.parmPrefix)))
                    {
                        var cutoff = DateTime.Today.AddDays(-BlogSettings.Instance.NumberOfReferrerDays);

                        cmd.Parameters.Add(conn.CreateParameter(FormatParamName("BlogId"), Blog.CurrentInstance.Id.ToString()));
                        cmd.Parameters.Add(conn.CreateParameter(FormatParamName("ReferralDay"), cutoff));

                        cmd.ExecuteNonQuery();
                    }
                }
            }
        }