MqttSyncClientDownloadBitmapAsync 方法 |
从远程服务器下载一个文件,生成一个Bitmap图片对象,需要指定文件类别,文件名,进度报告,可用于用户头像的存储
Download a file from a remote server and generate a Bitmap image object. You need to specify the file category, file name, and progress report, which can be used to store the user's avatar
命名空间:
HslCommunication.MQTT
程序集:
HslCommunication (在 HslCommunication.dll 中) 版本:10.6.1.0 (10.6.1.0)
语法 public Task<OperateResult<Bitmap>> DownloadBitmapAsync(
string groups,
string fileName,
Action<long, long> processReport
)
Public Function DownloadBitmapAsync (
groups As String,
fileName As String,
processReport As Action(Of Long, Long)
) As Task(Of OperateResult(Of Bitmap))
public:
Task<OperateResult<Bitmap^>^>^ DownloadBitmapAsync(
String^ groups,
String^ fileName,
Action<long long, long long>^ processReport
)
member DownloadBitmapAsync :
groups : string *
fileName : string *
processReport : Action<int64, int64> -> Task<OperateResult<Bitmap>>
参数
- groups
- 类型:SystemString
文件的类别,例如 Files/Personal/Admin 按照斜杠来区分 - fileName
- 类型:SystemString
文件名称,例如 123.txt - processReport
- 类型:SystemActionInt64, Int64
进度报告,第一个参数是已完成字节数,第二个参数是总字节数
返回值
类型:
TaskOperateResultBitmap如果下载成功,则携带图片资源对象
参见