public int GetGroupId(string num)
{
DialPrefixGroup type = GetGroupPrefixType(num);
if (type == DialPrefixGroup.DialGroupNone)
return -1;
string id = StripDialPrefix(num);
id = StripGroupDialPrefix(type, id);
int result;
if (int.TryParse(id, out result))
{
return result;
}
return -1;
}
public string GetGroupPrefix(DialPrefixGroup type)
{
if (!_groupprefix.ContainsKey(type))
return null;
return _groupprefix[type];
}
public string StripGroupDialPrefix(DialPrefixGroup type, string num)
{
string prefix = GetGroupPrefix(type);
return num.Substring(prefix.Length);
}
