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In this article, the editor introduces in detail "C# how to add custom events and custom triggers for the control". The content is detailed, the steps are clear, and the details are handled properly. I hope this article "C# how to add custom events and custom triggers to the control" can help you solve your doubts, following the editor's ideas slowly in depth, together to learn new knowledge.

Let's start with a random incident.

Public class TestEventrgs: EventArgs {private string _ name; public string Name {get {return _ name;}} private int _ age; public int Age {get {return _ age;}} public TestEventrgs (string name,int age) {_ name = name; _ age = age;}}

There are two types: custom controls and existing controls under winfrom

Let's start with a custom control.

Make a random interface.

Get on the horse

Using System;using System.Collections.Generic;using System.ComponentModel;using System.Drawing;using System.Data;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace CSDN {public partial class UserControl1: UserControl {int ClickNuM = 0; / / number of clicks public event EventHandler TestEventrg;// custom event public UserControl1 () {InitializeComponent () This.TestEventrg + = new EventHandler (DangeTip); / / Custom event binding method} private void DangeTip (object sender, TestEventrgs e) {string tool = string.Format ("Hazard Tip: {0} Don't be crazy, rely on {1} hand speed, right?", e.NameMage.Age); MessageBox.Show (tool) } protected override void OnClick (EventArgs e) {base.OnClick (e); ClickNuM++; if (ClickNuM > 5) {/ / trigger custom event this.TestEventrg?.Invoke (this,new TestEventrgs ("ming", 17)); / / input parameters can be passed in ClickNuM = 0 }

Put it on the interface, after you go crazy.

Next is the existing controls under winfrom, taking button as an example

Add a component first

Inherit Button instead and add corresponding custom events

Using System;using System.Collections.Generic;using System.ComponentModel;using System.Diagnostics;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace CSDN {public partial class MyButton: Button {public MyButton () {InitializeComponent ();} public event EventHandler TestEventrg; public MyButton (IContainer container) {container.Add (this) InitializeComponent ();}

Add components from the toolbox to the interface and add corresponding methods

Using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace CSDN {public partial class Form2: Form {public Form2 () {InitializeComponent ();} int ClickNuM = 0 Private void myButton1_TestEventrg (object sender, TestEventrgs e) {string tool = string.Format ("danger Tip: {0} Don't be crazy, relying on the speed of {1}, e.Name, e.Age); MessageBox.Show (tool);} private void myButton1_Click (object sender, EventArgs e) {ClickNuM++ If (ClickNuM > 5) {myButton1_TestEventrg (this, new TestEventrgs ("lang", 88)); ClickNuM = 0;}

After running, go crazy. Trigger

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