/// <summary>
/// Asynchronously retrieve the response from the requested url to the specified response stream.
/// </summary>
public void GetResponseAsync(string url, Stream responseStream, string accept, HttpPostData postData, WebRequestAsyncState state)
{
m_asyncState = state;
m_asyncState.Request = this;
if (Dispatcher.IsMultiThreaded)
{
GetResponseDelegate caller = GetResponse;
caller.BeginInvoke(url, responseStream, accept, postData, GetResponseAsyncCompleted, caller);
}
else
{
GetResponseAsyncCompletedCore(() => GetResponse(url, responseStream, accept, postData));
}
}
/// <summary>
/// Callback method for asynchronous requests
/// </summary>
private void DownloadStringAsyncCompleted(WebRequestAsyncState state)
{
StringRequestAsyncState requestState = (StringRequestAsyncState)state;
string result = String.Empty;
if (!requestState.Request.Cancelled && requestState.Error == null && requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Seek(0, SeekOrigin.Begin);
using (StreamReader reader = new StreamReader(requestState.Request.ResponseStream))
{
result = reader.ReadToEnd();
}
}
if (requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Close();
}
requestState.DownloadStringCompleted(new DownloadStringAsyncResult(result, requestState.Error), requestState.UserState);
}
/// <summary>
/// Callback method for asynchronous requests
/// </summary>
private void DownloadStringAsyncCompleted(WebRequestAsyncState state)
{
StringRequestAsyncState requestState = (StringRequestAsyncState)state;
string result = string.Empty;
if (!requestState.Request.Cancelled && requestState.Error == null && requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Seek(0, SeekOrigin.Begin);
using (StreamReader reader = new StreamReader(requestState.Request.ResponseStream))
{
result = reader.ReadToEnd();
}
}
if (requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Close();
}
requestState.DownloadStringCompleted(new DownloadStringAsyncResult(result, requestState.Error), requestState.UserState);
}
/// <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));
}
/// <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));
}
/// <summary>
/// Callback method for asynchronous requests
/// </summary>
private void DownloadXmlAsyncCompleted(WebRequestAsyncState state)
{
XmlRequestAsyncState requestState = (XmlRequestAsyncState)state;
XmlDocument xdocResult = new XmlDocument();
if (!requestState.Request.Cancelled && requestState.Error == null && requestState.Request.ResponseStream != null)
{
try
{
requestState.Request.ResponseStream.Seek(0, SeekOrigin.Begin);
xdocResult.Load(requestState.Request.ResponseStream);
}
catch (XmlException ex)
{
requestState.Error = HttpWebServiceException.XmlException(requestState.Request.BaseUrl, ex);
}
}
if (requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Close();
}
requestState.DownloadXmlCompleted(new DownloadXmlAsyncResult(xdocResult, requestState.Error), requestState.UserState);
}
/// <summary>
/// Callback method for asynchronous requests
/// </summary>
private void DownloadImageAsyncCompleted(WebRequestAsyncState state)
{
ImageRequestAsyncState requestState = (ImageRequestAsyncState)state;
Image imageResult = null;
try
{
if (!requestState.Request.Cancelled && requestState.Error == null)
{
imageResult = GetImage(requestState.Request);
}
}
catch (HttpWebServiceException ex)
{
requestState.Error = ex;
if (requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Close();
}
}
requestState.DownloadImageCompleted(new DownloadImageAsyncResult(imageResult, requestState.Error), requestState.UserState);
}
/// <summary>
/// Callback method for asynchronous requests
/// </summary>
private void DownloadXmlAsyncCompleted(WebRequestAsyncState state)
{
XmlRequestAsyncState requestState = (XmlRequestAsyncState)state;
XmlDocument xdocResult = new XmlDocument();
if (!requestState.Request.Cancelled && requestState.Error == null && requestState.Request.ResponseStream != null)
{
try
{
requestState.Request.ResponseStream.Seek(0, SeekOrigin.Begin);
xdocResult.Load(requestState.Request.ResponseStream);
}
catch (XmlException ex)
{
requestState.Error = HttpWebServiceException.XmlException(requestState.Request.BaseUrl, ex);
}
}
if (requestState.Request.ResponseStream != null)
{
requestState.Request.ResponseStream.Close();
}
requestState.DownloadXmlCompleted(new DownloadXmlAsyncResult(xdocResult, requestState.Error), requestState.UserState);
}
/// <summary>
/// Asynchronously retrieve the response from the requested url to the specified response stream.
/// </summary>
public void GetResponseAsync(string url, Stream responseStream, string accept, HttpPostData postData, WebRequestAsyncState state)
{
m_asyncState = state;
m_asyncState.Request = this;
if (Dispatcher.IsMultiThreaded)
{
GetResponseDelegate caller = GetResponse;
caller.BeginInvoke(url, responseStream, accept, postData, GetResponseAsyncCompleted, caller);
}
else
{
GetResponseAsyncCompletedCore(() => GetResponse(url, responseStream, accept, postData));
}
}