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SimultaneousChangedEventArgs Class

Updated: October 24, 2013

Represents the arguments for the SimultaneousChanged event, which occurs after a simultaneous configuration change has been applied to a role. A simultaneous configuration change affects all role instances at the same time.

Namespace: Microsoft.WindowsAzure.ServiceRuntime
Assembly: Microsoft.WindowsAzure.ServiceRuntime (in Microsoft.WindowsAzure.ServiceRuntime.dll)
Public Class SimultaneousChangedEventArgs
	Inherits EventArgs

The SimultaneousChanged event and the SimultaneousChanging event are used together to identify and manage simultaneous configuration changes to the service model. The SimultaneousChangedEventArgs object provides the changes that were made in the service configuration. The changes are of the type SimultaneousTopologyChange.

The following code example shows how to use the SimultaneousChangedEventArgs object to write out the list of simultaneous topology changes that were made to the role:

public override bool OnStart()
   RoleEnvironment.SimultaneousChanged += RoleEnvironmentSimultaneousChanged;
   return base.OnStart();

private void RoleEnvironmentSimultaneousChanged(object sender, 
   SimultaneousChangedEventArgs e)
   // Get the list of topology changes
   var topologyChanges = 
   foreach (var change in topologyChanges) 
      var message = "Topology change: " + change.RoleName;
      Trace.WriteLine(message, "Information");

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Development Platforms

Windows Vista, Windows 7, Windows Server 2008, Windows 8.1, Windows Server 2012 R2, Windows 8 and Windows Server 2012

Target Platforms