在每一个BLL前面都有这么一段,比如:
------------------------------------------------------------------------
private tree_level1TableAdapter _treelevel1TableAdapter = null;
protected tree_level1TableAdapter Adapter
{
get
{
if (_treelevel1TableAdapter == null)
_treelevel1TableAdapter = new tree_level1TableAdapter();
return _treelevel1TableAdapter;
}
}
-------------------------------------------------------------------------
为何不直接tree_level1TableAdapter Adapter=new tree_level1TableAdapter();?
------------------------------------------------------------------------
private tree_level1TableAdapter _treelevel1TableAdapter = null;
protected tree_level1TableAdapter Adapter
{
get
{
if (_treelevel1TableAdapter == null)
_treelevel1TableAdapter = new tree_level1TableAdapter();
return _treelevel1TableAdapter;
}
}
-------------------------------------------------------------------------
为何不直接tree_level1TableAdapter Adapter=new tree_level1TableAdapter();?
解决方案 »
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