/// <summary>
/// Asynchronously writes one or more values, qualities and timestamps for the items specified. If a client attempts to
/// write VQ, VT, or VQT it should expect that the server will write them all or none at all.
/// </summary>
/// <param name="items">The group items.</param>
/// <param name="values">The list of values, qualities and timestamps.</param>
/// <param name="token">The task cancellation token.</param>
/// <returns>
/// Array of HRESULTs indicating the success of the individual item Writes.
/// </returns>
public Task <HRESULT[]> WriteVQTAsync(IList <OpcDaItem> items, IList <OpcDaVQT> values,
CancellationToken token)
{
CheckItems(items);
CheckSupported(OpcDaGroupFeatures.WriteVQTAsync);
var request = new WriteVQTAsyncRequest(As <OpcAsyncIO3>());
_asyncRequestManager.AddRequest(request);
OPCITEMVQT[] vqts = ArrayHelpers.CreateOpcItemVQT(values);
return(request.Start(items, vqts, token));
}
/// <summary>
/// Writes one or more values, qualities and timestamps for the items specified. If a client attempts to write VQ, VT,
/// or VQT it should expect that the server will write them all or none at all.
/// </summary>
/// <param name="items">The group items.</param>
/// <param name="values">The list of values, qualities and timestamps.</param>
/// <returns>
/// Array of HRESULTs indicating the success of the individual item Writes.
/// </returns>
/// <exception cref="System.ArgumentException">Invalid size of values;values</exception>
public HRESULT[] WriteVQT(IList <OpcDaItem> items, IList <OpcDaVQT> values)
{
CheckSupported(OpcDaGroupFeatures.WriteVQT);
CheckItems(items);
int[] serverHandles = ArrayHelpers.GetServerHandles(items);
if (serverHandles.Length != values.Count)
{
throw new ArgumentException("Invalid size of values", "values");
}
OPCITEMVQT[] vqts = ArrayHelpers.CreateOpcItemVQT(values);
return(As <OpcSyncIO2>().WriteVQT(serverHandles, vqts));
}