public BindingManagerBase this [object dataSource, string dataMember] {
get {
if (dataSource == null)
{
throw new ArgumentNullException("dataSource");
}
if (dataMember == null)
{
dataMember = String.Empty;
}
#if NET_2_0
ICurrencyManagerProvider cm_provider = dataSource as ICurrencyManagerProvider;
if (cm_provider != null)
{
if (dataMember.Length == 0)
{
return(cm_provider.CurrencyManager);
}
return(cm_provider.GetRelatedCurrencyManager(dataMember));
}
#endif
HashKey key = new HashKey(dataSource, dataMember);
BindingManagerBase res = managers [key] as BindingManagerBase;
if (res != null)
{
return(res);
}
res = CreateBindingManager(dataSource, dataMember);
if (res == null)
{
return(null);
}
managers [key] = res;
return(res);
}
}
