How to: Send a Notification
You can use a Notification whenever a user should take action in your application, such as prompting to send data. Typically, you send a notification when an event occurs or a condition is met, but, for simplicity, this example displays a notification when a button is clicked. You can process responses to notifications by providing code to handle the ResponseSubmitted event.
The message in a notification can be plain text or HTML. HTML allows you to send a small HTML form that contains check boxes, buttons, lists, and other HTML elements. This example uses a simple form with Submit and Cancel buttons.
The Cancel button is identified by "cmd:2", which Windows CE uses to dismiss notifications. If cmd:2 is the name of an HTML button or other element in a message balloon, the ResponseSubmitted event is not raised. The notification is dismissed, but its icon is placed on the title bar and can be responded to at a later time.
To send a notification
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Create a Pocket PC Windows application.
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Add a Notification and a Button to the form.
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Create a Notification instance.
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Add the following code to handle the Click event of the button.
private void button1_Click(object sender, System.EventArgs e) { StringBuilder HTMLString = new StringBuilder(); HTMLString.Append("<html><body>"); HTMLString.Append("Submit data?"); HTMLString.Append("<form method=\'GET\' action=notify>"); HTMLString.Append("<input type='submit'>"); HTMLString.Append("<input type=button name='cmd:2' value='Cancel'>"); HTMLString.Append("</body></html>"); //Set the Text property to the HTML string. notification1.Text = HTMLString.ToString(); FileStream IconStream = new FileStream(".\\My Documents\\notify.ico", FileMode.Open, FileAccess.Read); notification1.Icon = new Icon(IconStream, 16, 16); notification1.Caption="Notification Demo"; notification1.Critical = false; // Display icon up to 10 seconds. notification1.InitialDuration = 10; notification1.Visible = true; }
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Add the following code to handle the ResponseSubmitted event.
// When a ResponseSubmitted event occurs, this event handler // parses the response to determine values in the HTML form. notification1.ResponseSubmitted += delegate (object obj, ResponseSubmittedEventArgs resevent) { if (resevent.Response.Substring(0,6) == "notify") { // Add code here to respond to the notification. } };
Compiling the Code
This example requires references to the following namespaces:
