public string system_drop_column_family(string column_family)
{
#if !SILVERLIGHT
send_system_drop_column_family(column_family);
return recv_system_drop_column_family();
#else
var asyncResult = Begin_system_drop_column_family(null, null, column_family);
return End_system_drop_column_family(asyncResult);
#endif
}
#if SILVERLIGHT