System.Data.SqlClient.MetaType.GetMetaTypeFromDbType C# (CSharp) Method

        internal static MetaType GetMetaTypeFromDbType(DbType target)
        {
            // if we can't map it, we need to throw
            switch (target)
            {
                case DbType.AnsiString: return s_metaVarChar;
                case DbType.AnsiStringFixedLength: return s_metaChar;
                case DbType.Binary: return MetaVarBinary;
                case DbType.Byte: return s_metaTinyInt;
                case DbType.Boolean: return s_metaBit;
                case DbType.Currency: return s_metaMoney;
                case DbType.Date:
                case DbType.DateTime: return s_metaDateTime;
                case DbType.Decimal: return MetaDecimal;
                case DbType.Double: return s_metaFloat;
                case DbType.Guid: return s_metaUniqueId;
                case DbType.Int16: return s_metaSmallInt;
                case DbType.Int32: return s_metaInt;
                case DbType.Int64: return s_metaBigInt;
                case DbType.Object: return s_metaVariant;
                case DbType.Single: return s_metaReal;
                case DbType.String: return MetaNVarChar;
                case DbType.StringFixedLength: return s_metaNChar;
                case DbType.Time: return s_metaDateTime;
                case DbType.Xml: return MetaXml;
                case DbType.DateTime2: return s_metaDateTime2;
                case DbType.DateTimeOffset: return MetaDateTimeOffset;
                case DbType.SByte:                  // unsupported
                case DbType.UInt16:
                case DbType.UInt32:
                case DbType.UInt64:
                case DbType.VarNumeric:
                default: throw ADP.DbTypeNotSupported(target, typeof(SqlDbType)); // no direct mapping, error out
            }
        }