public override void ShowError(string message)
{
base.ShowError(message);
this._currentImageTask = null;
this._currentStringTask = null;
}
public void RefreshImage()
{
if (this._currentStringTask != null)
{
this._currentStringTask.Cancel();
}
if (this._currentImageTask != null)
{
this._currentImageTask.Cancel();
}
string checkUri = this._urlBuilder.BuildCaptchaCheckUrl();
this._currentStringTask = new HttpGetStringTask(checkUri, this.OnCheckStringLoaded);
this._currentStringTask.OnError = this.ShowError;
this.ShowLoading();
this._currentStringTask.Execute();
}
private void OnCheckStringLoaded(string str)
{
this.Key = str.Substring(str.IndexOf('\n') + 1);
this.LoadCaptcha(this.Key);
this._currentStringTask = null;
}