/// <summary>
/// Set Dictionary Iterator to first Key-Value pair and return its Key.
/// </summary>
/// <param name="DictID">Supplies the id of the Dictionary to access.
/// </param>
/// <param name="Key">Output is the first Key in the SortedDictionary.
/// </param>
/// <returns>True if Dictionary DictID exists and contains elements,
/// otherwise false.</returns>
private bool DictionaryIterateFirst(string DictID, out string Key)
{
SortedDictionary <string, string> Dict;
IDictionaryEnumerator ide;
Key = "";
if (StorageList.TryGetValue(DictID, out Dict) == false)
{
return(false);
}
ide = Dict.GetEnumerator();
// Confirm there exists an element within this dictionary,
// if not simply return false
if (ide.MoveNext() == false)
{
return(false);
}
Key = (string)ide.Key;
// Store iterator for future use
StorageIteratorList[DictID] = ide;
return(true);
}
/// <summary>
/// Delete value from dictionary by key.
/// </summary>
/// <param name="DictID">Supplies the id of the Dictionary to access.
/// </param>
/// <param name="Key">Key to search for and delete from the dictionary.
/// </param>
private void DictionaryDeleteKey(string DictID, string Key)
{
SortedDictionary <string, string> Dict;
if (StorageList.TryGetValue(DictID, out Dict) == false)
{
return;
}
Dict.Remove(Key);
StorageIteratorList.Remove(Key);
}
/// <summary>
/// Set Dictionary DictID's Key to a String Value.
/// </summary>
/// <param name="DictID">Supplies the id of the Dictionary to access.
/// If this Dictionary does not exist, create it. </param>
/// <param name="Key">Supplies the Key for lookup of the target dictionary.
/// If no such Key exists, create a new Key/Value pair. </param>
/// <param name="Value">Supplies the Value to associate to the Key in the
/// target dictionary. </param>
private void DictionarySetString(string DictID, string Key, string Value)
{
SortedDictionary <string, string> Dict;
// Create if does not exist
if (StorageList.TryGetValue(DictID, out Dict) == false)
{
Dict = new SortedDictionary <string, string>();
StorageList[DictID] = Dict;
}
Dict[Key] = Value;
StorageIteratorList.Remove(DictID);
}
/// <summary>
/// Get Value corresponding to Dictionary DictID's Key. On error return
/// null string.
/// </summary>
/// <param name="DictID">Supplies the id of the Dictionary to access.
/// </param>
/// <param name="Key">Supplies the Key for lookup of the target dictionary.
/// </param>
/// <param name="Value">Output is the Value corresponding to Key.
/// </param>
/// <returns>True if Dictionary DictID exists and Key exists within it,
/// otherwise false.</returns>
private bool DictionaryGetString(string DictID, string Key, out string Value)
{
SortedDictionary <string, string> Dict;
Value = "";
if (StorageList.TryGetValue(DictID, out Dict) == false)
{
return(false);
}
if (Dict.TryGetValue(Key, out Value) == false)
{
return(false);
}
return(true);
}