protected T GetServiceProperty <T>(Func <T> getCmd, T defaultValue
, ActivityMessageTypes messageType = ActivityMessageTypes.Status
, [System.Runtime.CompilerServices.CallerMemberName] string propName = "???")
{
T retval = defaultValue;
Exception xcp = null;
CheckDevice();
try
{
retval = getCmd();
}
catch (Exception ex)
{
xcp = ex;
string name = ex.GetType().Name;
}
if (xcp == null)
{
if (retval is ArrayList)
{
LogActivityStart(messageType, "Get {0}: {1}", propName, retval);
StringBuilder sb = new StringBuilder();
ArrayList list = retval as ArrayList;
foreach (var item in list)
{
sb.Append((sb.Length > 0) ? ", " : "");
sb.Append(item.ToString());
}
LogActivityEnd(messageType, sb.ToString());
}
else if (retval is TrackingRates)
{
LogActivityStart(ActivityMessageTypes.Parameters, "Get {0}:", propName);
StringBuilder sb = new StringBuilder();
TrackingRates rates = retval as TrackingRates;
if (rates == null)
{
sb.Append(" Did not return expected ITrackingRates collection!");
}
else if (rates.Count == 0)
{
sb.Append("Received invalid Tracking Rates collection.");
}
else
{
for (int i = 1; i <= rates.Count; ++i)
{
if (sb.Length > 0)
{
sb.Append(", ");
}
sb.Append(rates[i].ToString());
}
}
LogActivityEnd(ActivityMessageTypes.Parameters, sb.ToString());
}
else
{
LogActivityLine(messageType, "Get {0}: {1}", propName, retval);
}
}
else
{
LogActivityLine(messageType, "Get {0} Exception: {1}", propName, xcp.Message);
}
Exceptions.SetException(propName, xcp);
return(retval);
}
