Class Request

Definition

Namespace:

Tizen.Content.Download

Assembly:

Tizen.Content.Download.dll

The Request class provides the functions to create and manage a single download request.

public class Request : IDisposable

Inheritance

object

Request

Implements

System.IDisposable

Constructors

Request(string, string, string, NetworkType, IDictionary<string, string>)

Creates a Request object.

Declaration

public Request(string url, string destinationPath, string fileName, NetworkType type, IDictionary<string, string> httpHeaders)

Parameters

Type	Name	Description
string	url	The URL to download.
string	destinationPath	The directory path where the downloaded file is stored.
string	fileName	The name of the downloaded file.
NetworkType	type	The network type which the download request must adhere to.
System.Collections.Generic.IDictionary<TKey, TValue><string, string>	httpHeaders	HTTP header fields for the download request.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.
System.NotSupportedException	Thrown when a feature is not supported.

Request(string, string, string, NetworkType)

Creates a Request object.

Declaration

public Request(string url, string destinationPath, string fileName, NetworkType type)

Parameters

Type	Name	Description
string	url	The URL to download
string	destinationPath	The directory path where downloaded file is stored.
string	fileName	The name of the downloaded file.
NetworkType	type	The network type which the download request must adhere to.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.
System.NotSupportedException	Thrown when a feature is not supported.

Request(string)

Creates a Request object.

Declaration

public Request(string url)

Parameters

Type	Name	Description
string	url	The URL to download.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Properties

AllowedNetworkType

The allowed network type for downloading the file. The file will be downloaded only under the allowed network. If you try to get this property value before setting or if any other error occurs, the default value NetworkType All is returned.

Declaration

public NetworkType AllowedNetworkType { get; set; }

Property Value

Type	Description
NetworkType

Remarks

Should be set before calling Start().

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.
System.NotSupportedException	Thrown when feature is not supported.

AutoDownload

Enables or disables auto download. If this option is enabled, the previous downloading item is restarted automatically as soon as the download daemon is restarted. The download progress continues after the client process is terminated. If you try to get this property value before setting, the default value false is returned.

Declaration

public bool AutoDownload { get; set; }

Property Value

Type	Description
bool

Remarks

The default value is false.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

ContentName

The content name of the downloaded file. This can be defined with reference of the HTTP response header data. The content name can be received when the HTTP response header is received. If you try to get this property value before calling Start(), an empty string is returned.

Declaration

public string ContentName { get; }

Property Value

Type	Description
string

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

ContentSize

The total size of the downloaded content. This information is received from the server. If the server does not send the total size of the content, the content size is set to zero. If you try to get this property value before calling Start(), 0 is returned.

Declaration

public ulong ContentSize { get; }

Property Value

Type	Description
ulong

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

DestinationPath

The file will be downloaded to the set the destination file path. The downloaded file is saved to an auto-generated file name in the destination. If the destination is not specified, the file will be downloaded to the default storage. If you try to get this property value before setting or if any other error occurs, an empty string is returned.

Declaration

public string DestinationPath { get; set; }

Property Value

Type	Description
string

Remarks

Should be set before calling Start().

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

DownloadedPath

The absolute path where the file will be downloaded. If you try to get this property value before calling Start(), an empty string is returned.

Declaration

public string DownloadedPath { get; }

Property Value

Type	Description
string

Remarks

Returns an empty string if the download is not completed or if a state has not yet changed to completed or if any other error occurs.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

ETagValue

The ETag value from the HTTP response header when making a HTTP request for resume. If you try to get this property value before calling Start() or if any other error occurs, an empty string is returned.

Declaration

public string ETagValue { get; }

Property Value

Type	Description
string

Remarks

The ETag value is either available or not dependent on the web server. If not available, then, on getting the property, a null value is returned. After the download is started, it can get the ETag value.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation
System.UnauthorizedAccessException	Thrown when a permission is denied.

FileName

The file will be saved in the specified destination or the default storage with the set file name. If the file name is not specified, the downloaded file will be saved with an auto-generated file name in the destination. If you try to get this property value before setting or if any other error occurs, an empty string is returned.

Declaration

public string FileName { get; set; }

Property Value

Type	Description
string

Remarks

Should be set before calling Start().

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

HttpHeaders

The HTTP header field and value pairs to the download request. The HTTP header <field,value> pair is the <key,value> pair in the dictionary HttpHeaders. The given HTTP header field will be included with the HTTP request of the download request. If you try to get this property value before setting, an empty dictionary is returned.

Declaration

public IDictionary<string, string> HttpHeaders { get; }

Property Value

Type	Description
System.Collections.Generic.IDictionary<TKey, TValue><string, string>

Remarks

HTTP header fields should be set before calling Start(). HTTP header fields can be removed before calling Start().

HttpStatus

The HTTP status code when a download exception occurs. If you try to get this property value before calling Start(), 0 is returned.

Declaration

public int HttpStatus { get; }

Property Value

Type	Description
int

Remarks

The state of the download request must be DownlodState.Failed.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

MimeType

The MIME type of the downloaded content. If you try to get this property value before calling Start(), an empty string is returned.

Declaration

public string MimeType { get; }

Property Value

Type	Description
string

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

NotificationProperties

Contains properties required for creating download notifications.

Declaration

public Notification NotificationProperties { get; }

Property Value

Type	Description
Notification

Remarks

When the notification message is clicked, the action taken by the system is decided by the application control properties of the NotificationProperties instance. If the app control is not set, the following default operation is executed when the notification message is clicked:

1. The download completed state - the viewer application is executed according to the extension name of the downloaded content.
2. The download failed state and ongoing state - the client application is executed. This property should be set before calling Start().

State

The current state of the download.

Declaration

public DownloadState State { get; }

Property Value

Type	Description
DownloadState

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

TemporaryPath

The full path of the temporary file stores the downloaded content.

Declaration

public string TemporaryPath { get; }

Property Value

Type	Description
string

Remarks

The download state must be one of the states after downloading.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Url

The URL to download.

Declaration

public string Url { get; set; }

Property Value

Type	Description
string

Remarks

Should be set before calling Start(). If you try to get this property value before setting or if any other error occurs, an empty string is returned.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

UsesCache

Enabled state of the cache feature.

Declaration

public bool UsesCache { get; set; }

Property Value

Type	Description
bool

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to setting an invalid value.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.
System.NotSupportedException	Thrown when not supported.

Methods

Cancel()

Cancels the download request.

Declaration

public void Cancel()

Remarks

The canceled download can be restarted with Start().

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Dispose()

Releases all the resources used by the Request class.

Declaration

public void Dispose()

Remarks

After calling this method, the download request related data exists in the download database for a certain period of time. Within that time, it is possible to use other APIs with this data.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Dispose(bool)

Deletes the corresponding download request.

Declaration

protected virtual void Dispose(bool disposing)

Parameters

Type	Name	Description
bool	disposing

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

~Request()

Destructor of the Request class.

Declaration

protected ~Request()

Pause()

Pauses the download request.

Declaration

public void Pause()

Remarks

The paused download request can be restarted with Start() or canceled with Cancel().

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

SetTemporaryFilePath(string)

Sets the directory path of a temporary file used in a previous download request. This is only useful when resuming download to make the HTTP request header at the client side. Otherwise, the path is ignored.

Declaration

public void SetTemporaryFilePath(string path)

Parameters

Type	Name	Description
string	path

Remarks

If the ETag value is not present in the download database, it is not useful to set the temporary file path. When resuming the download request, the data is attached at the end of this temporary file.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Start()

Starts or resumes the download. Starts to download the current URL, or resumes the download if paused.

Declaration

public void Start()

Remarks

The URL is the mandatory information to start the download.

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Events

ProgressChanged

An event that occurs when the download progress changes.

Declaration

public event EventHandler<ProgressChangedEventArgs> ProgressChanged

Event Type

Type	Description
System.EventHandler<TEventArgs><ProgressChangedEventArgs>

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

StateChanged

An event that occurs when the download state changes.

Declaration

public event EventHandler<StateChangedEventArgs> StateChanged

Event Type

Type	Description
System.EventHandler<TEventArgs><StateChangedEventArgs>

Exceptions

Type	Condition
System.ArgumentException	Thrown when it is failed due to an invalid parameter.
System.InvalidOperationException	Thrown when it is failed due to an invalid operation.
System.UnauthorizedAccessException	Thrown when a permission is denied.

Implements

System.IDisposable