Class Attachment

A file (such as an image or document) attached to a feature in a ServiceFeatureTable or a GeodatabaseFeatureTable.

Inheritance

System.Object

Attachment

Inherited Members

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: Esri.ArcGISRuntime.Data

Assembly: Esri.ArcGISRuntime.dll

Syntax

public sealed class Attachment

Remarks

Attachments allow you to associate files containing additional information with specific, relevant features. For example, a building inspector could attach a PDF of a permit to a building feature. Attachments are not stored as attributes, rather the attachment data is linked with the feature inside its ServiceFeatureTable or a GeodatabaseFeatureTable.

If a feature table supports attachments (HasAttachments), each feature in the table may have zero or more attachments. Get a feature's collection of attachments by calling . You can examine an attachment's name, type, and file size, and download the file using . Once downloaded, you can work with the data in your app (display it to the user, for example).

If a feature allows editing of its attachments (CanEditAttachments value is true), you can add to the feature's collection of attachments using AddAttachmentAsync(String, String, Byte[]). The data must be in one of the supported attachment formats. You can also update or delete attachments from the ArcGISFeature, as required.

Your app's available memory and storage space may impact the size of attachments you can add to a feature, or retrieve from the feature's collection. Apps that need to work with large attachments should be tested using representative physical devices and sample attachments.

Properties

Name	Description
ContentType	Gets the content type of the attachment.
HasFetchedData	Gets a value indicating whether data has been retrieved.
Id	Gets the id of the attachment.
Name	Gets the name of the attachment.
Size	Gets the size of the attachment's data in bytes.

Methods

Name	Description
GetDataAsync()	Asynchronously retrieves attachment's data.
GetDataAsync(CancellationToken)	Asynchronously retrieves attachment's data.

Applies to

Target	Versions
.NET Standard 2.0	100.3 - 200.6
.NET	100.13 - 200.6
.NET Windows	100.13 - 200.6
.NET Android	200.0 - 200.6
.NET iOS	200.0 - 200.6
.NET Framework	100.0 - 200.6
Xamarin.Android	100.0 - 100.15
Xamarin.iOS	100.0 - 100.15
UWP	100.0 - 200.6

Relevant samples

Edit feature attachments: Add, delete, and download attachments for features from a service.