private string GetKeyDateStrFromODataBase() { LockKeyManager MyLockKeyManager = new LockKeyManager(); //LockKey AnyLockKey = new LockKey(); //AnyLockKey.LockID = this.MyLockIDStr; //AnyLockKey..OwerName = this.NameIDStr; //AnyLockKey.KeyDateStr = this.DateTimeStr; LockKey AnyLockKey = MyLockKeyManager.FindOneLockKey(this.MyLockIDStr, int.Parse(KeyNumberIDStr)); if (AnyLockKey != null) { return(MyLockKeyManager.FindOneLockKey(this.MyLockIDStr, int.Parse(KeyNumberIDStr)).KeyDateStr); } else { return(null); } }