public void SearchFC(FeatureClass featureClass, IReadOnlyList<long> objectIDs)
{
QueryFilter queryFilter = new QueryFilter()
{
ObjectIDs = objectIDs
};
using (RowCursor rowCursor = featureClass.Search(queryFilter))
{
while (rowCursor.MoveNext())
{
using (Feature feature = rowCursor.Current as Feature)
{
// use feature
}
}
}
}