// return true if the uri is different
public bool StartPing()
{
lastPingTime = DateTime.Now;
bool isNewUri = false;
try {
OperationalUIFacade facade = (OperationalUIFacade)OperationalInterface.ObjectDirectory.Resolve(name);
string newUri = RemotingServices.GetObjectUri(facade);
if (newUri != uri)
{
isNewUri = true;
uri = newUri;
if (responseStatus != ResponseStatus.Unknown)
{
responseStatus = ResponseStatus.Unknown;
parent.OnPingCompleted(this);
}
}
pingInvoker = facade.Ping;
ThreadPool.QueueUserWorkItem(DoPing, pingInvoker);
}
catch (Exception) {
if (responseStatus != ResponseStatus.Down)
{
responseStatus = ResponseStatus.Down;
parent.OnPingCompleted(this);
}
}
return(isNewUri);
}
public bool IsSameUri()
{
try {
OperationalUIFacade facade = (OperationalUIFacade)OperationalInterface.ObjectDirectory.Resolve(name);
return(uri == RemotingServices.GetObjectUri(facade));
}
catch (Exception) {
responseStatus = ResponseStatus.Down;
return(false);
}
}
public static bool Attach(string suffix, bool throwException)
{
operationalFacade = null;
operationalUIFacade = null;
if (suffix == null)
{
suffix = string.Empty;
}
try {
operationalFacade = (OperationalFacade)od.Resolve("OperationalService" + suffix);
operationalUIFacade = (OperationalUIFacade)od.Resolve("OperationalUIService" + suffix);
DatasetSourceFacade dsfacade = operationalUIFacade.DatasetFacade;
DataItemDescriptor[] dataItems = dsfacade.GetDataItems();
foreach (DataItemDescriptor item in dataItems)
{
if (!dataset.ContainsKey(item.Name))
{
dataset.Add(item);
}
}
dataset.AttachToSource(dsfacade);
}
catch (Exception) {
operationalFacade = null;
operationalUIFacade = null;
if (throwException)
{
throw;
}
else
{
return(false);
}
}
if (Attached != null)
{
Attached(null, new AttachEventArgs(string.IsNullOrEmpty(suffix) ? string.Empty : suffix.Substring(1)));
}
return(true);
}
