I have just started building a app using “XihSolutions.DotMSN.dll” version: 2.0.0.40909,
My problem is that it is not firing the “Nameserver_SignedIn” event. Not sure if I am doing something wrong.
your help will be really helpful.
void Nameserver_SignedIn(object sender, EventArgs e)
{
throw new Exception("User Signed In");
}
private string message = string.Empty;
void NameserverProcessor_ConnectionEstablished(object sender, EventArgs e)
{
message = "Connected";
SetMessage();
}
void SetMessage()
{
if (tbMessage.InvokeRequired)
tbMessage. Invoke(new ThreadStart(SetMessage));
else
tbMessage.Text += Environment.NewLine+ message;
}
private void btnSingIn_Click(object sender, EventArgs e)
{
if (messenger.Connected)
{
// SetStatus("Disconnecting from server");
messenger.Disconnect();
}
// set the credentials, this is ofcourse something every DotMSN program will need to
// implement.
messenger.Credentials.Account = tbUserName.Text;
messenger.Credentials.Password = tbPwd.Text;
// inform the user what is happening and try to connecto to the messenger network.
//SetStatus("Connecting to server");
messenger.Connect();
}
You might use MSNPSharp instead - DotMSN is old and may not support the current MSN protocol. There link is here:
http://code.google.com/p/msnp-sharp/
Related
I am using code for motion detection webcam using Aforge. When running the program, it can run perfectly, but when edit libel1 "motion Detection" and libel2 "no motion Detection" it cannot running. Why?
The code I'm using for motion detection:
public Form1()
{
InitializeComponent();
}
FilterInfoCollection fic;
VideoCaptureDevice Device;
MotionDetector motionDetector;
float f;
private void Form1_Load(object sender, EventArgs e)
{
motionDetector = new MotionDetector(new TwoFramesDifferenceDetector(), new MotionAreaHighlighting());
fic = new FilterInfoCollection(FilterCategory.VideoInputDevice);
foreach (FilterInfo item in fic)
{
comboBoxDevice.Items.Add(item.Name);
}
comboBoxDevice.SelectedIndex = 0;
}
private void BtnStart_Click(object sender, EventArgs e)
{
Device = new VideoCaptureDevice(fic[comboBoxDevice.SelectedIndex].MonikerString);
videoSourcePlayer1.VideoSource = Device;
videoSourcePlayer1.Start();
}
private void BtnStop_Click(object sender, EventArgs e)
{
videoSourcePlayer1.Stop();
}
private void videoSourcePlayer1_NewFrame(object sender, ref Bitmap image)
{
if (motionDetector == null) return;
f = motionDetector.ProcessFrame(image);
if (f >0)
{
label1.ForeColor = Color.Red;
label1.Text = "Motion Detected";
}
else
{
label1.ForeColor = Color.Green;
label1.Text = "No Motion Detected";
}
}
private void timer_Tick(object sender, EventArgs e)
{
label3.Text = "Value: " + f.ToString();
}
}
}
I think you want to change a label in your UI when you detect a motion. If you want to change a label in UI, you can't run the change function in the same thread. So, you can change it by defining another thread. Just make sure you prevent race conditions.
// Changing UI Labels (Make thread)
Label1.Invoke((MethodInvoker)delegate {
// What do you want to change?
Label1.Text = "Detecting Motions";
});
I am trying SqlDepenedency for the first time. I am not getting any notifications on Database Update.
I am placing breakpoints inside :
OnChange(object sender, SqlNotificationEventArgs e),
but it never gets hit.
Here is my code :
protected void Page_Load(object sender, EventArgs e)
{
Label1.Text = "Cache Refresh: " + DateTime.Now.ToLongTimeString();
DateTime.Now.ToLongTimeString();
// Create a dependency connection to the database.
SqlDependency.Start(GetConnectionString());
using (SqlConnection connection = new SqlConnection(GetConnectionString()))
{
using (SqlCommand command = new SqlCommand(GetSQL(), connection))
{
SqlDependency dependency =
new SqlDependency(command);
// Refresh the cache after the number of minutes
// listed below if a change does not occur.
// This value could be stored in a configuration file.
connection.Open();
dgHomeRequests.DataSource = command.ExecuteReader();
dgHomeRequests.DataBind();
}
}
}
private string GetConnectionString()
{
// To avoid storing the connection string in your code,
// you can retrieve it from a configuration file.
//return "Data Source=(local);Integrated Security=true;" +"Initial Catalog=AdventureWorks;";
return ConfigurationManager.ConnectionStrings["TestData"].ConnectionString;
}
private string GetSQL()
{
return "Select [Address] From [UserAccount1]";
}
void OnChange(object sender, SqlNotificationEventArgs e)
{
// have breakpoint here:
SqlDependency dependency = sender as SqlDependency;
// Notices are only a one shot deal
// so remove the existing one so a new
// one can be added
dependency.OnChange -= OnChange;
// Fire the event
/* if (OnNewMessage != null)
{
OnNewMessage();
}*/
}
I have also placed some code in Global.asax file :
public class Global : HttpApplication
{
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
SqlDependency.Start(ConfigurationManager.ConnectionStrings["TestData"].ConnectionString);
}
protected void Application_End()
{
// Shut down SignalR Dependencies
SqlDependency.Stop(ConfigurationManager.ConnectionStrings["TestData"].ConnectionString);
}
}
The SQL server is on local machine. I am running the code through Visual Studio(IIS Express).
To enable service broker on database:
ALTER DATABASE SET ENABLE_BROKER
GO
To subscribe query notification, we need to give permission to IIS service account
GRANT SUBSCRIBE QUERY NOTIFICATIONS TO “<serviceAccount>”
I guessed the 2nd point is not needed as it is local. But I tried giving it some permissions. Don't know if they are right as I don't think it is using app pool.And don't need the permission on local env. if I am the user myself and created the schema myself.
One of the questions that I saw was granting :
alter authorization on database::<dbName> to [sa];
I gave that permission too.
I was missing :
dependency.OnChange += new OnChangeEventHandler(OnChange);
The new code would look like :
SqlDependency dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(OnChange);
now I can fire
void OnChange(object sender, SqlNotificationEventArgs e)
I want to read a text file from the Internet and I want while reading the file a picturebox, that is a gif animation, show and after the reading is finished picturebox hide.
I use background worker. I have a lable that shows the state, but when I click BtnCheck Button bg doesn't work and the lable doesn't change.
My code:
private void Form1_Load(object sender, EventArgs e)
{
backgroundWorker1.WorkerReportsProgress = true;
backgroundWorker1.WorkerSupportsCancellation = true;
}
private void BtnCheck_Click(object sender, EventArgs e)
{
PbLoading.Visible = true;
if (backgroundWorker1.IsBusy != true)
{
// Start the asynchronous operation.
backgroundWorker1.RunWorkerAsync();
}
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
LbleState.Text = "Reading txt File...";
webClient1 = new WebClient();
if (CheckForInternetConnection())
{
try
{
Stream stream = webClient1.OpenRead(TxtWebAdrss);
StreamReader reader = new StreamReader(stream);
String content = reader.ReadToEnd();
reader.Close();
LbleState.Text = "Reading Finished .";
}
catch
{
LbleState.Text = "Error reading";
}
}
else LbleState.Text = "Internet not connected!";
}
You may just need to do a bit more research into this class. You should perform UI changes on the UI thread.
There are three event handlers that you can use and these are,
backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
The following link should help,
http://msdn.microsoft.com/en-us/library/System.ComponentModel.BackgroundWorker(v=vs.110).aspx
I have a code to access multiple wcf server from one client with multiple instances. if any connection lost between this, having faulted/closed event trigger function to hande this.
((ICommunicationObject)notificationProviderClient).Faulted += new EventHandler(myHost_Faulted);
((ICommunicationObject)notificationProviderClient).Closed += new EventHandler(myHost_Closed);
void myHost_Faulted(object sender, EventArgs e)
{
}
void myHost_Closed(object sender, EventArgs e)
{
}
The above function get called, if any connection get fault/closed.
In this scenarion how to find which wcf server connection lost with the clent? is there any possible to find this or we have to go for another method to handle this?
to find remote address of server during connection lost, use this on client side
this.notificationProviderClient.InnerDuplexChannel.Faulted += new EventHandler(myHost_Faulted);
void myHost_Faulted(object sender, EventArgs e) {
IContextChannel channel = sender as IContextChannel;
if (channel != null)
{
var remoteAddrs = a1.RemoteAddress;
}
}
I have following two methods. When user clicks on start button from ui, the step geoLocator_PositionChanged in geoLocator_PositionChanged method is fired and calls the other method geoLocator_PositionChanged.But when it comes to try block while executing the first statement it throws the following error:
"The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD))"
private async void btnStartStop_Click_1(object sender, RoutedEventArgs e)
{
geoLocator.PositionChanged += geoLocator_PositionChanged;
}
async void geoLocator_PositionChanged(Geolocator sender, PositionChangedEventArgs args)
{
MessageDialog msgdlg = null;
bool bDisplayDialog = false;
try
{
lblAltValue.Text = args.Position.Coordinate.Altitude.ToString();
}
catch
{
}
}
Any help how can I fix this issue ?
You try to access the UI-Thread from another one.
Try something like ths
Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync
(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
//HERE GOES THE UI ACCESS LIKE this.textbox.text = "MY AWESOME TEXT";
});