怎么实现一个RadioGroupBox控件

如何实现一个RadioGroupBox控件
在用户界面中，经常需要这样的逻辑——当选择某个RadioButton时启用一组控件（如TextBox，ComboBox等），当这个RadioButton未被选中时，相应的一组控件被禁用。为求方便，需要UserControl。它具有如下特性：
1、具有一个单选钮
2、能作为一个容器
3、具有GroupBox一样的边框和标题栏
4、具有Checked属性，当未选定单选钮时，其中包含的各控件的Enabled属性为False；而当本UserControl时启用其子控件。
  但其包含的每个子控件的Enabled状态可能不相同，要求能保持子控件的启用/禁用状态。
5、本RadioGroupBox的选定状态可以跟同级的其它RadioGroupBox和RadioButton协调，以便实现单选功能。
如下图所示：


[解决办法]
RadioButton 的选中事件啊，再设置需要的控件的Enable属性的true或者false
[解决办法]

C# code

partial class RadioGroupBox    {        /// <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 && (components != null))            {                components.Dispose();            }            base.Dispose(disposing);        }        #region Component 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.groupBox1 = new System.Windows.Forms.GroupBox();            this.radioButton1 = new System.Windows.Forms.RadioButton();            this.groupBox1.SuspendLayout();            this.SuspendLayout();            //             // groupBox1            //             this.groupBox1.Controls.Add(this.radioButton1);            this.groupBox1.Dock = System.Windows.Forms.DockStyle.Fill;            this.groupBox1.Location = new System.Drawing.Point(0, 0);            this.groupBox1.Name = "groupBox1";            this.groupBox1.Size = new System.Drawing.Size(220, 127);            this.groupBox1.TabIndex = 0;            this.groupBox1.TabStop = false;            //             // radioButton1            //             this.radioButton1.AutoSize = true;            this.radioButton1.Location = new System.Drawing.Point(0, 1);            this.radioButton1.Name = "radioButton1";            this.radioButton1.Size = new System.Drawing.Size(95, 16);            this.radioButton1.TabIndex = 0;            this.radioButton1.TabStop = true;            this.radioButton1.Text = "radioButton1";            this.radioButton1.UseVisualStyleBackColor = true;            this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButton1_CheckedChanged);            //             // RadioGroupBox            //             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;            this.Controls.Add(this.groupBox1);            this.Name = "RadioGroupBox";            this.Size = new System.Drawing.Size(220, 127);            this.groupBox1.ResumeLayout(false);            this.groupBox1.PerformLayout();            this.ResumeLayout(false);        }        #endregion        private System.Windows.Forms.GroupBox groupBox1;        private System.Windows.Forms.RadioButton radioButton1;private string radioButtonText;        public string RadioButtonText        {            get { return radioButtonText; }            set {                 radioButton1.Text = value;            }        }        private void radioButton1_CheckedChanged(object sender, EventArgs e)        {            if (radioButton1.Checked)            {                groupBox1.Enabled = true;            }            else            {                radioButton1.Checked = true;            }        }    }