C:需要我的一个类触发另一个类中的事件来更新文本框

您的代码应该类似于:

public class CommManager()
{
    delegate void FramePopulatedHandler(object sender, EventArgs e);

    public event FramePopulatedHandler FramePopulated;

    public void MethodThatPopulatesTheFrame()
    {
        FramePopulated();
    }

    // The rest of your code here.
}

public partial class Form1 : Form      
{      
    CommManager comm;      

    public Form1()      
    {      
        InitializeComponent();      
        comm = new CommManager();      
        comm.FramePopulated += comm_FramePopulatedHander;
    }      

    private void updateTextBox()      
    {      
        //get new values and update textbox      
    }

    private void comm_FramePopulatedHandler(object sender, EventArgs e)
    {
        updateTextBox();
    }
}

下面是指向注释中提到的.NET事件命名准则的链接:

MSDN - Event Naming Guidelines

Here 你有“想象中最简单的C事件例子”。

    public partial class Form1: Form
    {
        CommManager comm;

        public Form1()
        {
            InitializeComponent();
            comm = new CommManager();
            comm.OnFramePopulated += new EventHandler(updateTextBox);
        }

        private void updateTextBox(object sender, EventArgs ea)
        {
            //update Textbox
        }
    }

    class CommManager
    {
        public EventHandler OnFramePopulated;

        public void PopulateFrame()
        {
            OnFramePopulated(this, null);
        }
    }

是-将UpdateTextBox的签名更改为:

private void updateTextBox(object sender, Eventargs ea)

尽管这可能不是最好的设计。如果您编写了一个合适的事件处理程序,然后从那里调用updatetextbox,事情看起来会更整洁…