public void ReadDataFromAFile()
{
string fileName = @"c:\temp\Tulsa Bank 1 LTC 1.d2";
DateTime start = DateTime.Parse("4/17/2013 10:38 AM");
DateTime stop = DateTime.Parse("4/17/2013 10:38 AM");
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
using (SortedTreeFile file = SortedTreeFile.OpenFile(fileName, isReadOnly: true))
using (SortedTreeTable <HistorianKey, HistorianValue> table = file.OpenTable <HistorianKey, HistorianValue>())
using (SortedTreeTableReadSnapshot <HistorianKey, HistorianValue> snapshot = table.BeginRead())
{
SortedTreeScannerBase <HistorianKey, HistorianValue> scanner = snapshot.GetTreeScanner();
HistorianKey seekKey = new HistorianKey();
seekKey.TimestampAsDate = start;
seekKey.PointID = 3142023;
scanner.SeekToKey(seekKey);
while (scanner.Read(key, value) && key.TimestampAsDate <= stop)
{
Console.WriteLine("{0}, {1}, {2}",
key.TimestampAsDate.ToString(), key.PointID, value.AsString);
}
}
}
public void SeekToKeyAndUpdateCacheValue(TKey key)
{
Scanner.SeekToKey(key);
CacheIsValid = Scanner.Peek(CacheKey, CacheValue);
}