/// <summary>
/// Downloads an file from the specified url to the specified path
/// </summary>
/// <param name="url"></param>
/// <param name="filePath"></param>
/// <returns></returns>
public FileInfo DownloadFile(string url, string filePath)
{
string urlValidationError;
if (!IsValidURL(url, out urlValidationError))
{
throw new ArgumentException(urlValidationError);
}
HttpWebServiceRequest request = GetRequest();
try
{
FileStream responseStream;
try
{
responseStream = new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.None);
}
catch (Exception ex)
{
throw HttpWebServiceException.FileError(url, ex);
}
request.GetResponse(url, responseStream, FILE_ACCEPT);
return(new FileInfo(filePath));
}
finally
{
if (request.ResponseStream != null)
{
request.ResponseStream.Close();
}
}
}
/// <summary>
/// Callback method for asynchronous requests
/// </summary>
private void DownloadFileAsyncCompleted(WebRequestAsyncState state)
{
FileRequestAsyncState requestState = (FileRequestAsyncState)state;
FileInfo fileResult = null;
if (!requestState.Request.Cancelled && requestState.Error == null)
{
try
{
fileResult = new FileInfo(requestState.FilePath);
}
catch (Exception ex)
{
requestState.Error = HttpWebServiceException.FileError(requestState.Request.BaseUrl, ex);
}
}
if (requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Close();
}
requestState.DownloadFileCompleted(new DownloadFileAsyncResult(fileResult, requestState.Error, requestState.Request.Cancelled));
}
