FileDownloader.OpenFileStreamAsync Method
Definition
Important
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Overloads
| Name | Description |
|---|---|
| OpenFileStreamAsync(ConversationType, Uri, String, Boolean, CancellationToken) |
Open a byte stream for an inbound file. Only |
| OpenFileStreamAsync(ConversationType, Uri, Uri, String, Boolean, GraphCredential, CancellationToken) |
Open a byte stream for an inbound file, resolving it through Microsoft Graph when the pre-authorized download URL is absent. Only |
OpenFileStreamAsync(ConversationType, Uri, String, Boolean, CancellationToken)
Open a byte stream for an inbound file. Only personal is implemented; other scopes throw FileScopeNotSupportedException until their Graph receive path lands.
public System.Threading.Tasks.Task<Microsoft.Teams.Apps.Files.OpenedFileStream> OpenFileStreamAsync(Microsoft.Teams.Apps.Schema.ConversationType? scope, Uri? downloadUrl, string? contentType, bool priorFetchSucceeded, System.Threading.CancellationToken cancellationToken);member this.OpenFileStreamAsync : Microsoft.Teams.Apps.Schema.ConversationType * Uri * string * bool * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Teams.Apps.Files.OpenedFileStream>Public Function OpenFileStreamAsync (scope As ConversationType, downloadUrl As Uri, contentType As String, priorFetchSucceeded As Boolean, cancellationToken As CancellationToken) As Task(Of OpenedFileStream)Parameters
- scope
- ConversationType
- downloadUrl
- Uri
- contentType
- String
- priorFetchSucceeded
- Boolean
- cancellationToken
- CancellationToken
Returns
Applies to
OpenFileStreamAsync(ConversationType, Uri, Uri, String, Boolean, GraphCredential, CancellationToken)
Open a byte stream for an inbound file, resolving it through Microsoft Graph when the pre-authorized download URL is absent.
Only personal is implemented; other scopes throw FileScopeNotSupportedException until their Graph receive path lands.
public System.Threading.Tasks.Task<Microsoft.Teams.Apps.Files.OpenedFileStream> OpenFileStreamAsync(Microsoft.Teams.Apps.Schema.ConversationType? scope, Uri? downloadUrl, Uri? contentUrl, string? contentType, bool priorFetchSucceeded, Microsoft.Teams.Apps.Files.GraphCredential? credential, System.Threading.CancellationToken cancellationToken);member this.OpenFileStreamAsync : Microsoft.Teams.Apps.Schema.ConversationType * Uri * Uri * string * bool * Microsoft.Teams.Apps.Files.GraphCredential * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Teams.Apps.Files.OpenedFileStream>Public Function OpenFileStreamAsync (scope As ConversationType, downloadUrl As Uri, contentUrl As Uri, contentType As String, priorFetchSucceeded As Boolean, credential As GraphCredential, cancellationToken As CancellationToken) As Task(Of OpenedFileStream)Parameters
- scope
- ConversationType
Conversation scope; the dispatcher is keyed on this.
- downloadUrl
- Uri
Short-lived, pre-authorized download URL (personal scope).
- contentUrl
- Uri
Browsable URL to the item, used as the Graph sharing locator when no downloadUrl is present.
- contentType
- String
MIME type reported by the incoming file, used as a fallback when the response omits one.
- priorFetchSucceeded
- Boolean
Whether an earlier fetch through the same handle already succeeded.
- credential
- GraphCredential
Credential used for the Graph fetch path. Absent means no Graph route is available, so an expired URL cannot be recovered.
- cancellationToken
- CancellationToken
A token to cancel opening the stream.