余小章 @ 大內殿堂

我有SwitchFlag類別 

class SwitchFlag
{
    private bool _Enable = false;
    public bool Enable
    {
        get { return _Enable; }
        set { _Enable = value; }
    }

    private bool _IsTabStop=true;
    public bool IsTabStop
    {
        get { return _IsTabStop; }
        set { _IsTabStop = value; }
    }
}

Dictionary 集合這樣定義 

public Dictionary<Control, SwitchFlag> SwitchFlags
{
    get { return _SwitchFlags; }
    set { _SwitchFlags = value; }
}

 查詢Dictionary 集合的索引，這樣寫 

{
    int position = SwitchFlags
        .Select((item, index) => new { Ctrl = item.Key, Index = index })
        .Where(i => i.Ctrl.Name == ctrl.Name).First().Index
        ;
    
    return position;
}

 依索引條件找出集合物件 

{
    var move = SwitchFlags
          .Select((item, index) => new { Ctrl = item.Key, Index = index })
          .Where(o => o.Index == (position)).First().Ctrl
          ;
    return move;
}

 呼叫上述兩個方法 

{
    Control current = (Control)sender;

    if (!this.SwitchFlags.ContainsKey(current))
    {
        return;
    }

    int index = findControlIndex(current);//找出集合索引
    int count = this.SwitchFlags.Count;
    Control move = null;
    if (this.NextKeys.Contains(e.KeyCode))
    {
        if (index == count - 1)
        {
            move = moveControl(0);
        }
        else
        {
            move = moveControl(index + 1);//找出下一個物件
        }
    }
    else if (this.PreviousKeys.Contains(e.KeyCode))
    {
        if (index == 0)
        {
            move = moveControl(count - 1);
        }
        else
        {
            move = moveControl(index - 1);//找出上一個物件
        }
    }
    move.Focus();
}

  實作結果 

 

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Microsoft MVP Award 2010~2017 C# 第四季
Microsoft MVP Award 2018~2022 .NET