個人開發框架總結（四）：BaseQueryForm 查詢視窗實作範例與 BuildLists 覆寫技巧

frmMemberQuery 實作範例

public frmMemberQuery()
{
    InitializeComponent();
    DisplayResultList = true; // 顯示查詢結果清單
}

protected override void CreateListInstance(Type type)
{
    base.CreateListInstance(typeof(TMembers)); // 指定實體集合型別
}

protected override BaseModel GetSelectedInfo(Node node)
{
    try
    {
        var objDAL = (ATMember)DAFactory.CreateDA(typeof(ATMember));
        var info = objDAL.Get(node.Tag);
        objDAL.Dispose();
        return info;
    }
    catch (Exception e)
    {
        Utility.ShowErrorMessage(e.Message);
    }
    return null;
}

protected override IList BuildLists(QueryBuilder qb)
{
    try
    {
        var da = (ATMember)DAFactory.CreateDA(typeof(ATMember));
        qb.Append(QueryRelation.And, QueryCompare.Equal, TMember._MemerState, MemberState.Normal.ToString("D"));
        return da.Select(qb, GetInfoFIElds());
    }
    catch (Exception e)
    {
        Utility.ShowErrorMessage(e.Message);
    }
    return null;
}

關鍵點：DisplayResultList 控制是否顯示結果區；CreateListInstance 指定強型別集合；GetSelectedInfo 依節點 Tag 取得實體；BuildLists 組合固定條件與使用者查詢條件。