public Bitmap CaptureHtml(int timeoutMs)
{
if (timeoutMs <= 0)
{
throw new ArgumentException("You must specify a timeout value greater than 0", "timeoutMs");
}
// set the timeout
_timeoutMs = timeoutMs;
ConditionVariable signal = new ConditionVariable();
// open a new form on a background, STA thread
Thread formThread = ThreadHelper.NewThread(new ThreadStart(delegate { ThreadMain(signal, _ids); }), "BrowserScreenCaptureForm", true, true, true);
formThread.Start();
// wait for it to complete or timeout
using (WaitCursor waitCursor = ShowWaitCursor ? new WaitCursor() : null)
{
signal.WaitForSignal(30000); // this should actually return very quickly
if (formThread.Join(_timeoutMs))
{
// throw an exception if one occurred
if (_exception != null)
{
throw _exception;
}
// return the captured bitmap
return((Bitmap)Bitmap.FromStream(StreamHelper.AsStream(_capturedBitmap)));
}
else
{
// timed out, make sure we tell the form to close if
// it hasn't already
_applicationContext.CloseFormAndExit();
// return null
return(null);
}
}
}
public Bitmap CaptureHtml(int timeoutMs)
{
if (timeoutMs <= 0)
throw new ArgumentException("You must specify a timeout value greater than 0", "timeoutMs");
// set the timeout
_timeoutMs = timeoutMs;
ConditionVariable signal = new ConditionVariable();
// open a new form on a background, STA thread
Thread formThread = ThreadHelper.NewThread(new ThreadStart(delegate { ThreadMain(signal, _ids); }), "BrowserScreenCaptureForm", true, true, true);
formThread.Start();
// wait for it to complete or timeout
using (WaitCursor waitCursor = ShowWaitCursor ? new WaitCursor() : null)
{
signal.WaitForSignal(30000); // this should actually return very quickly
if (formThread.Join(_timeoutMs))
{
// throw an exception if one occurred
if (_exception != null)
throw _exception;
// return the captured bitmap
return (Bitmap)Bitmap.FromStream(StreamHelper.AsStream(_capturedBitmap));
}
else
{
// timed out, make sure we tell the form to close if
// it hasn't already
_applicationContext.CloseFormAndExit();
// return null
return null;
}
}
}
private void ThreadMain(ConditionVariable signal, string[] ids)
{
HtmlScreenCaptureForm form = null;
try
{
// housekeeping initialization
Application.OleRequired();
// create the form and execute the capture
form = new HtmlScreenCaptureForm(this);
this.Ids = ids;
form.Ids = ids;
form.DoCapture();
// Create and run the form
_applicationContext = new FormLifetimeApplicationContext(form);
signal.Signal();
Application.Run(_applicationContext);
// propragate exceptions that happened inside the AppContext
if (_applicationContext.Exception != null)
{
throw _applicationContext.Exception;
}
}
catch (Exception ex)
{
_exception = ex;
}
finally
{
if (form != null)
{
form.Close();
}
}
}
private void ThreadMain(ConditionVariable signal, string[] ids)
{
HtmlScreenCaptureForm form = null;
try
{
// housekeeping initialization
Application.OleRequired();
// create the form and execute the capture
form = new HtmlScreenCaptureForm(this);
this.Ids = ids;
form.Ids = ids;
form.DoCapture();
// Create and run the form
_applicationContext = new FormLifetimeApplicationContext(form);
signal.Signal();
Application.Run(_applicationContext);
// propragate exceptions that happened inside the AppContext
if (_applicationContext.Exception != null)
throw _applicationContext.Exception;
}
catch (Exception ex)
{
_exception = ex;
}
finally
{
if (form != null)
form.Close();
}
}
