将按钮单击事件功能移动到visual studio中的其他类？ - C＃

Question

How can I have a custom class ex. named Inputs and have all my winForm button clicks and Ui elements events in it rather then having it in the main form class?

Currently I would have this in the main form class, but I want to move it to another class.

    private void button1_Click(object sender, EventArgs e)
    {
      // Do something
    }

Answer 1

Well there is a couple different ways you could do this. But you could skip the entire auto generated Click handlers and define your own as to avoid another level of Method calling. A very naive way to do it would be something like this:

public class FormInputHandler
{
    private Form1 _form1;

    public FormInputHandler(Form1 form1)
    {
        _form1 = form1;
        _form1.Controls["button1"].Click += Button1ClickHandler;
    }

    private void Button1ClickHandler(object sender, EventArgs e)
    {
        // Do stuff
    }
}

Granted I wouldn't necessarily do this exactly. But I think it demonstrates the point. It's kind of what you are trying to do. This way you don't have to have the all the Handler Methods in your Form1 class file. Then to use something like this just do:

(Inside your private void InitializeComponent() Method in your Form1.Designer.cs )

private void InitializeComponent()
    {
        // 
        // button1
        // 

        // Generated button1 stuff goes here.

        // 
        // Form1
        // 

        // Generated Form1 stuff goes here

        // Call this at the end so that 
        // everything is already added to the form.
        AttachInputHandler();
    }

    #endregion

    private void AttachInputHandler()
    {
        this._inputHandler = new FormInputHandler(this);
    }

    private System.Windows.Forms.Button button1;
    private FormInputHandler _inputHandler;

Answer 2

Here is a solution based on @Spool 's answer, that works the way I originally imagined it.

(However I am not sure it's the actually solution I will use) :

In main Form1 class:

using System.Windows.Forms;

namespace InputFormTest
{
    public partial class mainForm : Form
    {
        public mainForm()
        {
            InitializeComponent();
            InitializeInputs();
        }

        void InitializeInputs()
        {
            InputHandler.mainForm = this;
            InputHandler.debugBox = debugBox;
            InputHandler.mainForm.Controls["button1"].Click += InputHandler.OnButton1Click;
            InputHandler.mainForm.Controls["button2"].Click += InputHandler.OnButton2Click;
            ((NumericUpDown)InputHandler.mainForm.Controls["numUpDown1"]).ValueChanged += InputHandler.OnNumUpDown1Changed;
        }
    }
}

And the InputHandler Class:

using System;
using System.Windows.Forms;

namespace InputFormTest
{
    public static class InputHandler
    {
        public static Form mainForm;
        public static RichTextBox debugBox;

        public static void OnButton1Click(object sender, EventArgs e)
        {
            debugBox.AppendText("Button1 Clicked \n");
        }

        public static void OnButton2Click(object sender, EventArgs e)
        {
            debugBox.AppendText("Button2 Clicked \n");
        }

        public static void OnNumUpDown1Changed(object sender, EventArgs e)
        {
            debugBox.AppendText($"Num value: {((NumericUpDown)sender).Value} \n");
        }
    }
}

Download VS Project

Answer 3

I think this is what you are looking for:

Create your input class and define your method (the parameters and the return value have to be acceptable to the event!)

static class input
{    
    public static void button1_Click(object sender, EventArgs e) 
    {
        System.Windows.Forms.MessageBox.Show("test");
    }
}

Then go to your From1 or whatever your MainForm is.

And then add it (I recommend in the InitializeComponent(); method or in the constructor)

    private void InitializeComponent()
    {
        this.button1 = new System.Windows.Forms.Button();
        this.SuspendLayout();
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(171, 50);
        this.button1.Name = "button1";
        this.button1.Size = new System.Drawing.Size(75, 23);
        this.button1.TabIndex = 1;
        this.button1.Text = "button1";
        this.button1.UseVisualStyleBackColor = true;

        // Here you add the event handler
        this.button1.Click += input.button1_Click;

        //...
    }

And you're done!

Hope this helps.