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Я пытаюсь создать приложение winform. Случайно я нашел эту радиокнопку.Событие Checked запускается, когда мы программно присваиваем значение true для RadioButton .Проверено. Но он не запускается, когда мы программно присваиваем значение false для Radiobutton .Проверено. Но он срабатывает, когда мы вручную его проверили / сняли. Вот пример кода. Скопируйте его, скомпилируйте и запустите для проверки

 using System.Windows.Forms;
using System;
using System.ComponentModel;
using System.Windows;

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

    private void button1_Click(object sender, EventArgs e)
    {
        //radioButton1.Checked = true;
        //radioButton2.Checked = true;
        radioButton1.Checked = false;
        radioButton2.Checked = false;
    }

    private void radioButton1_CheckedChanged(object sender, EventArgs e)
    {
        System.Windows.Forms.RadioButton tempRB = (System.Windows.Forms.RadioButton)sender;
        MessageBox.Show(tempRB.Name   " : "   (tempRB.Checked ? "Checked" : "Unchecked"));
        //radioButton2.Checked = !radioButton1.Checked;
    }
}
partial class Form1
{
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing amp;amp; (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.button1 = new System.Windows.Forms.Button();
        this.groupBox1 = new System.Windows.Forms.GroupBox();
        this.radioButton1 = new System.Windows.Forms.RadioButton();
        this.radioButton2 = new System.Windows.Forms.RadioButton();
        this.groupBox1.SuspendLayout();
        this.SuspendLayout();
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(173, 84);
        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;
        this.button1.Click  = new System.EventHandler(this.button1_Click);
        // 
        // groupBox1
        // 
        this.groupBox1.Controls.Add(this.radioButton2);
        this.groupBox1.Controls.Add(this.radioButton1);
        this.groupBox1.Location = new System.Drawing.Point(385, 56);
        this.groupBox1.Name = "groupBox1";
        this.groupBox1.Size = new System.Drawing.Size(200, 100);
        this.groupBox1.TabIndex = 2;
        this.groupBox1.TabStop = false;
        this.groupBox1.Text = "groupBox1";
        // 
        // radioButton1
        // 
        this.radioButton1.AutoSize = true;
        this.radioButton1.Location = new System.Drawing.Point(21, 28);
        this.radioButton1.Name = "radioButton1";
        this.radioButton1.Size = new System.Drawing.Size(85, 17);
        this.radioButton1.TabIndex = 0;
        this.radioButton1.Text = "radioButton1";
        this.radioButton1.UseVisualStyleBackColor = true;
        this.radioButton1.CheckedChanged  = new System.EventHandler(this.radioButton1_CheckedChanged);
        // 
        // radioButton2
        // 
        this.radioButton2.AutoSize = true;
        this.radioButton2.Location = new System.Drawing.Point(21, 52);
        this.radioButton2.Name = "radioButton2";
        this.radioButton2.Size = new System.Drawing.Size(85, 17);
        this.radioButton2.TabIndex = 1;
        this.radioButton2.Text = "radioButton2";
        this.radioButton2.UseVisualStyleBackColor = true;
        // 
        // Form1
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(663, 261);
        this.Controls.Add(this.groupBox1);
        this.Controls.Add(this.button1);
        this.Name = "Form1";
        this.Text = "Form1";
        this.groupBox1.ResumeLayout(false);
        this.groupBox1.PerformLayout();
        this.ResumeLayout(false);
        this.PerformLayout();
    }

    #endregion

    private System.Windows.Forms.Button button1;
    private System.Windows.Forms.GroupBox groupBox1;
    private System.Windows.Forms.RadioButton radioButton2;
    private System.Windows.Forms.RadioButton radioButton1;
}
static class Temp
{
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }
}
}
  

Кто-нибудь может дать объяснение по этому поводу. А также помогите мне, как запустить RadioButton.Проверил событие, когда ему программно было присвоено значение false.
Примечание: я использую .net 3.5, Windows 10.

РЕДАКТИРОВАТЬ: я добавляю слегка измененный код. В этом случае кнопка «Снять флажок» ничего не запускала. Но «Проверить оба» дважды запускает событие CheckedChanged. Проверьте этот код

 using System.Windows.Forms;
using System;
using System.ComponentModel;
using System.Windows;

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

    private void button1_Click(object sender, EventArgs e)
    {
        radioButton1.Checked = false;
        radioButton2.Checked = false;
    }

    private void button2_Click(object sender, EventArgs e)
    {
        radioButton1.Checked = true;
        radioButton2.Checked = true;
    }

    private void radioButton1_CheckedChanged(object sender, EventArgs e)
    {
        System.Windows.Forms.RadioButton tempRB = (System.Windows.Forms.RadioButton)sender;
        MessageBox.Show(tempRB.Name   " : "   (tempRB.Checked ? "Checked" : "Unchecked"));
        //radioButton2.Checked = !radioButton1.Checked;
    }
}
partial class Form1
{
    /// <summary>
    /// Required designer variable.
    /// </summary>
    private System.ComponentModel.IContainer components = null;

    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
    protected override void Dispose(bool disposing)
    {
        if (disposing amp;amp; (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    #region Windows Form Designer generated code

    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    private void InitializeComponent()
    {
        this.button1 = new System.Windows.Forms.Button();
        this.groupBox1 = new System.Windows.Forms.GroupBox();
        this.radioButton1 = new System.Windows.Forms.RadioButton();
        this.radioButton2 = new System.Windows.Forms.RadioButton();
        this.button2 = new System.Windows.Forms.Button();
        this.groupBox1.SuspendLayout();
        this.SuspendLayout();
        // 
        // button1
        // 
        this.button1.Location = new System.Drawing.Point(173, 84);
        this.button1.Name = "button1";
        this.button1.Size = new System.Drawing.Size(75, 23);
        this.button1.TabIndex = 1;
        this.button1.Text = "UnCheck";
        this.button1.UseVisualStyleBackColor = true;
        this.button1.Click  = new System.EventHandler(this.button1_Click);
        // 
        // button2
        // 
        this.button2.Location = new System.Drawing.Point(173, 132);
        this.button2.Name = "button2";
        this.button2.Size = new System.Drawing.Size(75, 23);
        this.button2.TabIndex = 3;
        this.button2.Text = "Check Both";
        this.button2.UseVisualStyleBackColor = true;
        this.button2.Click  = new System.EventHandler(this.button2_Click);
        // 
        // groupBox1
        // 
        this.groupBox1.Controls.Add(this.radioButton2);
        this.groupBox1.Controls.Add(this.radioButton1);
        this.groupBox1.Location = new System.Drawing.Point(385, 56);
        this.groupBox1.Name = "groupBox1";
        this.groupBox1.Size = new System.Drawing.Size(200, 100);
        this.groupBox1.TabIndex = 2;
        this.groupBox1.TabStop = false;
        this.groupBox1.Text = "groupBox1";
        // 
        // radioButton1
        // 
        this.radioButton1.AutoSize = true;
        this.radioButton1.Location = new System.Drawing.Point(21, 28);
        this.radioButton1.Name = "radioButton1";
        this.radioButton1.Size = new System.Drawing.Size(85, 17);
        this.radioButton1.TabIndex = 0;
        this.radioButton1.Text = "radioButton1";
        this.radioButton1.UseVisualStyleBackColor = true;
        this.radioButton1.CheckedChanged  = new System.EventHandler(this.radioButton1_CheckedChanged);
        // 
        // radioButton2
        // 
        this.radioButton2.AutoSize = true;
        this.radioButton2.Location = new System.Drawing.Point(21, 52);
        this.radioButton2.Name = "radioButton2";
        this.radioButton2.Size = new System.Drawing.Size(85, 17);
        this.radioButton2.TabIndex = 1;
        this.radioButton2.Text = "radioButton2";
        this.radioButton2.UseVisualStyleBackColor = true;
        // 
        // Form1
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(663, 261);
        this.Controls.Add(this.groupBox1);
        this.Controls.Add(this.button1);
        this.Controls.Add(this.button2);
        this.Name = "Form1";
        this.Text = "Form1";
        this.groupBox1.ResumeLayout(false);
        this.groupBox1.PerformLayout();
        this.ResumeLayout(false);
        this.PerformLayout();
    }

    #endregion

    private System.Windows.Forms.Button button2;
    private System.Windows.Forms.Button button1;
    private System.Windows.Forms.GroupBox groupBox1;
    private System.Windows.Forms.RadioButton radioButton2;
    private System.Windows.Forms.RadioButton radioButton1;
}
static class Temp
{
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Form1());
    }
}
}