System.Data.SqlClient.SqlBuffer.GetTypeFromStorageType C# (CSharp) Méthode

        internal Type GetTypeFromStorageType(bool isSqlType)
        {
            if (isSqlType)
            {
                switch (_type)
                {
                    case SqlBuffer.StorageType.Empty: return null;
                    case SqlBuffer.StorageType.Boolean: return typeof(SqlBoolean);
                    case SqlBuffer.StorageType.Byte: return typeof(SqlByte);
                    case SqlBuffer.StorageType.DateTime: return typeof(SqlDateTime);
                    case SqlBuffer.StorageType.Decimal: return typeof(SqlDecimal);
                    case SqlBuffer.StorageType.Double: return typeof(SqlDouble);
                    case SqlBuffer.StorageType.Int16: return typeof(SqlInt16);
                    case SqlBuffer.StorageType.Int32: return typeof(SqlInt32);
                    case SqlBuffer.StorageType.Int64: return typeof(SqlInt64);
                    case SqlBuffer.StorageType.Money: return typeof(SqlMoney);
                    case SqlBuffer.StorageType.Single: return typeof(SqlSingle);
                    case SqlBuffer.StorageType.String: return typeof(SqlString);
                    case SqlBuffer.StorageType.SqlCachedBuffer: return typeof(SqlString);
                    case SqlBuffer.StorageType.SqlBinary: return typeof(object);
                    case SqlBuffer.StorageType.SqlGuid: return typeof(object);
                    case SqlBuffer.StorageType.SqlXml: return typeof(SqlXml);
                }
            }
            else
            { //Is CLR Type
                switch (_type)
                {
                    case SqlBuffer.StorageType.Empty: return null;
                    case SqlBuffer.StorageType.Boolean: return typeof(Boolean);
                    case SqlBuffer.StorageType.Byte: return typeof(Byte);
                    case SqlBuffer.StorageType.DateTime: return typeof(DateTime);
                    case SqlBuffer.StorageType.Decimal: return typeof(Decimal);
                    case SqlBuffer.StorageType.Double: return typeof(Double);
                    case SqlBuffer.StorageType.Int16: return typeof(Int16);
                    case SqlBuffer.StorageType.Int32: return typeof(Int32);
                    case SqlBuffer.StorageType.Int64: return typeof(Int64);
                    case SqlBuffer.StorageType.Money: return typeof(Decimal);
                    case SqlBuffer.StorageType.Single: return typeof(Single);
                    case SqlBuffer.StorageType.String: return typeof(String);
                    case SqlBuffer.StorageType.SqlBinary: return typeof(Byte[]);
                    case SqlBuffer.StorageType.SqlCachedBuffer: return typeof(string);
                    case SqlBuffer.StorageType.SqlGuid: return typeof(Guid);
                    case SqlBuffer.StorageType.SqlXml: return typeof(string);
                }
            }

            return null; // need to return the value as an object of some CLS type            
        }