/// <summary>
/// Gets an instance the CM11A device and opens the specified port for communication.
/// </summary>
/// <param name="portName">The name of the port to open, such as COM1.</param>
public static CM11AServer GetInstance(string portName)
{
if (string.IsNullOrEmpty(portName))
{
throw new ArgumentNullException(nameof(portName));
}
CM11AServer instance = null;
lock (Instances)
{
if (Instances.ContainsKey(portName))
{
instance = Instances[portName];
}
else
{
try
{
instance = new CM11AServer(portName);
}
catch (Exception ex)
{
instance = null;
throw new IOException(string.Format("There was an error creating the CM11A device on {0}.", portName), ex);
}
finally
{
if (instance != null)
{
Interlocked.Increment(ref instance._refCount);
Instances.AddOrUpdate(portName, instance, (key, existingVal) => instance);
}
}
}
}
return(instance);
}
/// <summary>
/// Gets an instance the CM11A device and opens the specified port for communication.
/// </summary>
/// <param name="portName">The name of the port to open, such as COM1.</param>
public static CM11AServer GetInstance(string portName)
{
if (string.IsNullOrEmpty(portName))
throw new ArgumentNullException(nameof(portName));
CM11AServer instance = null;
lock (Instances)
{
if (Instances.ContainsKey(portName))
{
instance = Instances[portName];
}
else
{
try
{
instance = new CM11AServer(portName);
}
catch (Exception ex)
{
instance = null;
throw new IOException(string.Format("There was an error creating the CM11A device on {0}.", portName), ex);
}
finally
{
if (instance != null)
{
Interlocked.Increment(ref instance._refCount);
Instances.AddOrUpdate(portName, instance, (key, existingVal) => instance);
}
}
}
}
return instance;
}