c# - Adding a method to the C# Controls class

Question

I am trying to add two methods to the Controls class in C#, these classes being 'UpColor' and 'DownColor' so that I can set a buttons BackColor depending on whether the state of the button is 'up' or 'down'

I have tried using extension methods, however because extension methods are static is means that every time I select a different button it will use the previous buttons up/down color, instead of it's own.

Is there a way of adding to the Controls class so that I can get/set a Color?

I have decided to go down the route of adding a static class and to have a dictionary for each method. It's not what I wanted, but I should do the job..

    static class ButtonColors
{
    public static Dictionary<Control, Color> UpColor
    {
        get;
        set;
    }

    public static Dictionary<Control, Color> DownColor
    {
        get;
        set;
    }
}

score 3 · Accepted Answer

それに応じてクラスを拡張する必要があります。

public ClassWithColors : Control {
  // extended implementation
  public string UpColor { get; set; }
  public string DownColor { get; set; }
  // assuming types, change as needed
}

ただし、どのコントロールクラスについて話しているのか明確ではないため、ここでは WinForms を想定しています。原則として、ASP.NET ユーザーコントロールなどについても同じです。

score 0 · Accepted Answer

ボタンのハンドルを取り、その色を変更する「メソッド」を作成してみてください。

c# - Adding a method to the C# Controls class

2 に答える 2

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