ISmoothStreamingCache.BeginPersist Method
Begins to persist a cache response. This function is called whenever in the course of normal playback a Smooth Streaming object chunk, manifest, or key frame is received from the network and it might be useful to persist the item for later use.
Namespace: Microsoft.Web.Media.SmoothStreaming
Assembly: Microsoft.Web.Media.SmoothStreaming (in Microsoft.Web.Media.SmoothStreaming.dll)
Syntax
'Declaration
Function BeginPersist ( _
request As CacheRequest, _
response As CacheResponse, _
callback As AsyncCallback, _
state As Object _
) As IAsyncResult
'Usage
Dim instance As ISmoothStreamingCache
Dim request As CacheRequest
Dim response As CacheResponse
Dim callback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginPersist(request, _
response, callback, state)
IAsyncResult BeginPersist(
CacheRequest request,
CacheResponse response,
AsyncCallback callback,
Object state
)
IAsyncResult^ BeginPersist(
CacheRequest^ request,
CacheResponse^ response,
AsyncCallback^ callback,
Object^ state
)
abstract BeginPersist :
request:CacheRequest *
response:CacheResponse *
callback:AsyncCallback *
state:Object -> IAsyncResult
function BeginPersist(
request : CacheRequest,
response : CacheResponse,
callback : AsyncCallback,
state : Object
) : IAsyncResult
Parameters
- request
Type: Microsoft.Web.Media.SmoothStreaming.CacheRequest
A CacheRequest object.
- response
Type: Microsoft.Web.Media.SmoothStreaming.CacheResponse
A CacheResponse object.
- callback
Type: System.AsyncCallback
A AsyncCallback delegate method to complete the operation.
- state
Type: System.Object
A Object that represents state for the request.
Return Value
Type: System.IAsyncResult
An IAsyncResult object.
Examples
The following code shows an implementation of the BeginPersist(CacheRequest, CacheResponse, AsyncCallback, Object) method.
public IAsyncResult BeginPersist(CacheRequest request, CacheResponse response, AsyncCallback callback, object state)
{
state = false;
CacheAsyncResult ar = new CacheAsyncResult();
if (!keyUrls.ContainsKey(request.CanonicalUri.ToString()))
{
state = true;
ar.strUrl = request.CanonicalUri.ToString();
ar.Complete(response, (bool)state);
return ar;
}
ar.Complete(null, true);
return ar;
}
Version Information
Silverlight
Supported in: 5
Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0