BackgroundTransferContentPart 类
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
表示多部分传输请求的内容部分。 每个 BackgroundTransferContentPart 对象都可以表示文本内容的单个字符串或单个文件有效负载,但不能同时表示这两者。
public ref class BackgroundTransferContentPart sealed
/// [Windows.Foundation.Metadata.Activatable(Windows.Networking.BackgroundTransfer.IBackgroundTransferContentPartFactory, 65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.Activatable(65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class BackgroundTransferContentPart final
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
/// [Windows.Foundation.Metadata.Activatable(Windows.Networking.BackgroundTransfer.IBackgroundTransferContentPartFactory, 65536, "Windows.Foundation.UniversalApiContract")]
class BackgroundTransferContentPart final
[Windows.Foundation.Metadata.Activatable(typeof(Windows.Networking.BackgroundTransfer.IBackgroundTransferContentPartFactory), 65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.Activatable(65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public sealed class BackgroundTransferContentPart
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Activatable(65536, "Windows.Foundation.UniversalApiContract")]
[Windows.Foundation.Metadata.Activatable(typeof(Windows.Networking.BackgroundTransfer.IBackgroundTransferContentPartFactory), 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class BackgroundTransferContentPart
function BackgroundTransferContentPart(name, fileName)
Public NotInheritable Class BackgroundTransferContentPart
- 继承
- 属性
Windows 要求
设备系列 |
Windows 10 (在 10.0.10240.0 中引入)
|
API contract |
Windows.Foundation.UniversalApiContract (在 v1.0 中引入)
|
应用功能 |
internetClient
internetClientServer
privateNetworkClientServer
|
示例
以下示例演示如何配置和开始多部分上传操作。
var upload = null;
var promise = null;
function MultipartUpload (uriString, files) {
try {
var uri = Windows.Foundation.Uri(uriString);
var uploader = new Windows.Networking.BackgroundTransfer.BackgroundUploader();
var contentParts = [];
files.forEach(function (file, index) {
var part = new Windows.Networking.BackgroundTransfer.BackgroundTransferContentPart("File" + index, file.name);
part.setFile(file);
contentParts.push(part);
});
// Create a new upload operation.
uploader.createUploadAsync(uri, contentParts).then(function (uploadOperation) {
// Start the upload and persist the promise to be able to cancel the upload.
upload = uploadOperation;
promise = uploadOperation.startAsync().then(complete, error, progress);
});
} catch (err) {
displayError(err);
}
};
构造函数
BackgroundTransferContentPart() | |
BackgroundTransferContentPart(String) |
创建一个 BackgroundTransferContentPart 对象,该对象标识它表示的内容。 |
BackgroundTransferContentPart(String, String) |
创建一个 BackgroundTransferContentPart 对象,该对象标识文件内容及其表示的文件的名称。 |
方法
SetFile(IStorageFile) |
为包含要上传的文件的 BackgroundTransferContentPart 设置源文件。 |
SetHeader(String, String) |
设置内容处置标头值,该值指示此 BackgroundTransferContentPart 表示的信息的性质。 |
SetText(String) |
使用此方法可设置 BackgroundTransferContentPart 表示的文本信息。 |