public Index(string nm, ushort kl, DateTime udTime)
{
int sz = DataFile.GetSize(Root);
if (DataFile.Exists(nm, "Index"))
{
File = DataFile.Open(nm, "Index", FileMode.Open);
File.Read(Root, DataFile.coSignatureSz, sz);
if (DateTime.Compare(Root.LastUpdate, udTime) >= 0 && Root.Closed)
{
Root.Closed = false;
File.Lock(Root);
File.Write(Root);
return;
}
File.Close();
DataFile.Delete(nm, "Index");
}
File = DataFile.Open(nm, "Index", FileMode.CreateNew);
DataFile.Blank(Root, sz);
Root.KeyLength = kl;
Root.Closed = false;
Root.PageSize = (ushort)DataFile.GetSize(new IdxPage(0, 0, 0, kl));
File.Append(Root, sz);
File.Lock(Root);
}
internal static bool Exists(string nm)
{
return(DataFile.Exists(nm, "Table"));
}