c# 获取用户控件点击按钮的值

Question

我有用户控制并将其命名为ucMilkshake，我的主窗体Form1 每个都有一组按钮。我将项目按钮放在ucMilkshake 上，将数量（1,2,3,4,5,6,7,8,9）按钮放在Form1 上，用户需要先单击btnMilkshake，然后ucMilkshake 会弹出在panel 内Form1 中，他们将在他们选择需要的项目之一后看到项目列表选择项目的数量，然后它将显示到listview in Form1

但我无法获得在用户控件中单击的按钮的值，希望这里有人可以使用 if statement 帮助解决我的问题，因为我有一组按钮

这是我的代码：

用户控制

public partial class ucMilkshake : UserControl
{
    int clickcount = 0;
    private static ucMilkshake _instance;

    public static ucMilkshake Instance
    {
        get
        {
            if (_instance == null)
                _instance = new ucMilkshake();
            return _instance;
        }
    }

    public ucMilkshake()
    {
        InitializeComponent();
    }

    public string MS1
    {
        get
        {
            return button11.Text;
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        clickcount - 1;
    }

   private void button2_Click(object sender, EventArgs e)
    {
        clickcount = 2;
    }
}`

表格1

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }


    private void Form1_Load(object sender, EventArgs e)
    {

    }

    private void btnMilkshake_Click(object sender, EventArgs e)
    {
        if (!mainPanel.Controls.Contains(ucMilkshake.Instance))
        {
            mainPanel.Controls.Add(ucMilkshake.Instance);
            ucMilkshake.Instance.Dock = DockStyle.Fill;
            ucMilkshake.Instance.BringToFront();
        }
        else
            ucMilkshake.Instance.BringToFront();
    }

    private void quantityOne_Click(Object sender, EventArgs e)
    {
        //here i want to use if statement to get the value of clicked button in user control

    private void quantityTwo_Click(Object sender, EventArgs e)
  }

Answer 1

不要在UserControl 中使用成员变量。相反，创建一个可以在Form 中访问的公共属性。

public partial class ucMilkshake : UserControl
{
    private static ucMilkshake _instance;

    public int ClickCount { get; private set; }

    public static ucMilkshake Instance
    {
        get
        {
            if (_instance == null)
                _instance = new ucMilkshake();
            return _instance;
        }
    }

    public ucMilkshake()
    {
        InitializeComponent();
    }

    public string MS1
    {
        get
        {
            return button11.Text;
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        ClickCount -= 1;
    }

    private void button2_Click(object sender, EventArgs e)
    {
        ClickCount = 2;
    }
}

然后在表单的单击事件处理程序中，您可以像这样访问该值：

private void quantityOne_Click(Object sender, EventArgs e)
{
    var count = ucMilkshake.Instance.ClickCount;
}