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Forum Discussion
solsupp
7 years agoExplorer | Level 3
Dropbox API
Have tried one of your examples for uploading larger files, getting on error on this line
updated = CType(ChunkUpload((filePath + ("/" + fileName)), fs, ChunkSize, dbx), Task(Of FileMetadata))
Additional information: Unable to cast object of type 'System.Threading.Tasks.Task`1[System.Threading.Tasks.VoidTaskResult]' to type 'System.Threading.Tasks.Task`1[Dropbox.Api.Files.FileMetadata]'.
it relatesd to the function below, which is cast as a task
Private Async Function ChunkUpload(ByVal path As String, ByVal stream As FileStream, ByVal chunkSize As Integer, dbx As DropboxClient) As Task Dim numChunks As Integer = CType(Math.Ceiling((CType(stream.Length, Double) / chunkSize)), Integer) Dim buffer() As Byte = New Byte((chunkSize) - 1) {} Dim sessionId As String = Nothing Dim idx = 0 Do While (idx < numChunks) Dim byteRead = stream.Read(buffer, 0, chunkSize) Dim memStream = New MemoryStream(buffer, 0, byteRead) If (idx = 0) Then Dim result = dbx.Files.UploadSessionStartAsync(False, memStream) sessionId = CType(result.Id, String) Else Dim cursor = New UploadSessionCursor(sessionId, CType((chunkSize * idx), System.UInt64)) If (idx _ = (numChunks - 1)) Then Dim fileMetadata As FileMetadata = Await dbx.Files.UploadSessionFinishAsync(cursor, New CommitInfo(path), memStream) Console.WriteLine(fileMetadata.PathDisplay) Else Await dbx.Files.UploadSessionAppendV2Async(cursor, False, memStream) End If End If idx = (idx + 1) Loop End Function
Can you give any advice
- Greg-DB
Dropbox Staff
Based on your newer thread, it sounds like you already sorted this out, so I'll follow up with you on your new question there.
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