Firestore API - Class CollectionReference (3.9.0)

public sealed class CollectionReference : Query, IEquatable<Query>, IEquatable<CollectionReference>, IComparable<CollectionReference>

Reference documentation and code samples for the Firestore API class CollectionReference.

A reference to a collection in a Firestore database. The existence of this object does not imply that the collection currently exists in storage.

Inheritance

object > Query > CollectionReference

Namespace

Google.Cloud.Firestore

Assembly

Google.Cloud.Firestore.dll

Properties

Id

public string Id { get; }

The final part of the complete collection path; this is the identity of the collection relative to its parent document.

Property Value
Type Description
string

Parent

public DocumentReference Parent { get; }

The parent document, or null if this is a root collection.

Property Value
Type Description
DocumentReference

Path

public string Path { get; }

The complete collection path, including project and database ID.

Property Value
Type Description
string

Methods

AddAsync(object, CancellationToken)

public Task<DocumentReference> AddAsync(object documentData, CancellationToken cancellationToken = default)

Asynchronously creates a document with the given data in this collection. The document has a randomly generated ID.

Parameters
Name Description
documentData object

The data for the document. Must not be null.

cancellationToken CancellationToken

A cancellation token to monitor for the asynchronous operation.

Returns
Type Description
TaskDocumentReference

The reference for the newly-created document.

Remarks

If the WriteResult for the operation is required, use CreateAsync(object, CancellationToken) instead of this method.

CompareTo(CollectionReference)

public int CompareTo(CollectionReference other)
Parameter
Name Description
other CollectionReference
Returns
Type Description
int

Document()

public DocumentReference Document()

Creates a DocumentReference for a direct child document of this collection with a random ID. This performs no server-side operations; it only generates the appropriate DocumentReference.

Returns
Type Description
DocumentReference

A DocumentReference to a child document of this collection with a random ID.

Document(string)

public DocumentReference Document(string path)

Creates a DocumentReference for a child document of this reference.

Parameter
Name Description
path string

The path to the document, relative to this collection. Must not be null, and must contain an odd number of slash-separated path elements.

Returns
Type Description
DocumentReference

A DocumentReference for the specified document.

GetHashCode()

public override int GetHashCode()
Returns
Type Description
int
Overrides

ListDocumentsAsync()

public IAsyncEnumerable<DocumentReference> ListDocumentsAsync()

Lists the documents in this collection. The results include documents which don't exist in their own right, but which have nested documents which do exist.

Returns
Type Description
IAsyncEnumerableDocumentReference

A lazily-iterated sequence of document references within this collection.

ToString()

public override string ToString()
Returns
Type Description
string
Overrides