public OpcServerCategory[] GetCategories(Guid clsid)
{
IEnumGUID catEnumerator = null;
try
{
catEnumerator = _catInformation.EnumImplCategoriesOfClass(clsid);
var catids = new Guid[MaxItemsPerRequest];
int fetched;
var result = new List <OpcServerCategory>();
do
{
catEnumerator.Next(catids.Length, catids, out fetched);
for (var i = 0; i < fetched; i++)
{
var catid = catids[i];
var opcServerCategory = OpcServerCategory.Get(catid);
if (opcServerCategory != null)
{
result.Add(opcServerCategory);
}
}
} while (fetched != 0);
return(result.ToArray());
}
finally
{
if (catEnumerator != null)
{
Marshal.ReleaseComObject(catEnumerator);
}
}
}
private Guid[] GetCategoriesGuids(OpcServerCategory[] categories)
{
return categories.Select(c => c.CATID).ToArray();
}
