Application Events Sample
This sample demonstrates how to use My.Computer.Network events to write network-aware applications.
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.gif "Security note") Security Note: |
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This sample code is intended to illustrate a concept, and it shows only the code that is relevant to that concept. It may not meet the security requirements for a specific environment, and it should not be used exactly as shown. We recommend that you add security and error-handling code to make your projects more secure and robust. Microsoft provides this sample code "AS IS" with no warranties. |
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- Press F5.
Demonstrates
The MainForm contains a StatusStrip control that indicates whether the network connection is currently connected or disconnected. Each time the status of network connectivity changes, the My.Computer.Network.NetworkAvailabilityChanged Event event is raised. The handler for this event resides in the My Project\MyEvents.vb file. To access this file, double-click My Project in Solution Explorer. On the Application tab in the Project Designer, click the View Code button. The logic that updates the Status Panel resides in the SetConnectionStatus method of MainForm. Network events in Visual Basic are marshaled back to the main application thread; handlers of these events can, therefore, manipulate the user interface directly.