KnownMetadataHelper Class

Helper class to access lists of known metadata field names by .NET type and by document format types.

Definition

Namespace: OpenDiscoverSDK.Interfaces.Metadata
Assembly: OpenDiscoverSDK.Interfaces (in OpenDiscoverSDK.Interfaces.dll) Version: 2026.2.6.0 (2026.02.06)
C#
public static class KnownMetadataHelper
Inheritance
Object    KnownMetadataHelper

Remarks

The helper lists of metadata fields in this class can be used to populate UI drop down lists of fields to search for in full-text search indexes, for example.

This class uses reflection to create lists of the defined fields and field attributes in classes KnownBooleanMetadataFields, KnownDateTimeMetadataFields, KnownDoubleMetadataFields, KnownInt32MetadataFields, KnownInt64MetadataFields, and KnownStringMetadataFields.

Properties

ArchiveTypeMetadataFields Archive (.7z, .zip, .rar, etc) associated metadata fields (see KnownMetadataField).
BooleanMetadataFields All boolean type known metadata field names.
DateTimeMetadataFields All DateTime type known metadata field names.
DocumentStoreTypeMetadataFields Document store (DXL database, etc) metadata fields (see KnownMetadataField).
DoubleMetadataFields All double type known metadata field names.
EmailMapiTypeMetadataFields Outlook/Exchange MAPI .msg object associated metadata fields (see KnownMetadataField).
EmailTypeMetadataFields Common (shared) email document associated metadata fields (see KnownMetadataField).
HtmlTypeMetadataFields HTML document associated metadata fields (see KnownMetadataField).
ImageTypeMetadataFields Image document associated metadata fields (see KnownMetadataField).
Int32MetadataFields All Int32 type known metadata field names.
Int64MetadataFields All Int64 type known metadata field names.
MailStoreTypeMetadataFields Mail store (.pst, .ost, .mbox, etc.) associated metadata fields (see KnownMetadataField).
MessagingStoreTypeMetadataFields Messaging store (Slack export, WhatsApp export, etc) associated metadata fields (see KnownMetadataField).
MessagingTypeMetadataFields Messaging type metadata fields (see KnownMetadataField, e.g., Teams, Slack, etc., message metadata).
MultimediaTypeMetadataFields Multimedia document associated metadata fields (see KnownMetadataField).
OfficeTypeMetadataFields Common office document type associated metadata fields (see KnownMetadataField).
OtherTypeMetadataFields "Other" (miscellaneous) metadata fields (see KnownMetadataField).
ReservedMetadataFields Reserved metadata fields (see KnownMetadataField).
StringMetadataFields All string type known metadata field names.

See Also