/// <summary>
/// Asynchronously downloads file from the specified url to the specified path
/// </summary>
/// <param name="url"></param>
/// <param name="filePath"></param>
/// <param name="callback">A <see cref="DownloadImageCompletedCallback"/> to be invoked when the request is completed</param>
/// <param name="progressCallback"></param>
/// <returns></returns>
public object DownloadFileAsync(string url, string filePath, DownloadFileCompletedCallback callback, DownloadProgressChangedCallback progressCallback)
{
string urlValidationError;
if (!IsValidURL(url, out urlValidationError))
throw new ArgumentException(urlValidationError);
FileRequestAsyncState state = new FileRequestAsyncState(filePath, callback, progressCallback, DownloadFileAsyncCompleted);
HttpWebServiceRequest request = GetRequest();
request.GetResponseAsync(url, new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.None), IMAGE_ACCEPT, null, state);
return request;
}
/// <summary>
/// Asynchronously downloads file from the specified url to the specified path
/// </summary>
/// <param name="url"></param>
/// <param name="filePath"></param>
/// <param name="callback">A <see cref="DownloadImageCompletedCallback"/> to be invoked when the request is completed</param>
/// <param name="progressCallback"></param>
/// <returns></returns>
public object DownloadFileAsync(string url, string filePath, DownloadFileCompletedCallback callback, DownloadProgressChangedCallback progressCallback)
{
string urlValidationError;
if (!IsValidURL(url, out urlValidationError))
{
throw new ArgumentException(urlValidationError);
}
FileRequestAsyncState state = new FileRequestAsyncState(filePath, callback, progressCallback, DownloadFileAsyncCompleted);
HttpWebServiceRequest request = GetRequest();
request.GetResponseAsync(url, new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.None), IMAGE_ACCEPT, null, state);
return(request);
}
public FileRequestAsyncState(string filepath, DownloadFileCompletedCallback callback, DownloadProgressChangedCallback progressCallback, WebRequestAsyncCallback webRequestCallback)
: base(webRequestCallback, progressCallback)
{
_filePath = filepath;
_downloadFileCompleted = callback;
}
public FileRequestAsyncState(string filepath, DownloadFileCompletedCallback callback, DownloadProgressChangedCallback progressCallback, WebRequestAsyncCallback webRequestCallback)
: base(webRequestCallback, progressCallback)
{
_filePath = filepath;
_downloadFileCompleted = callback;
}