如何分组窗体单选按钮?

看看把你的单选按钮放在GroupBox。

你应该把组的所有单选按钮放在同一个容器中，比如GroupBox或Panel。

将组的所有单选按钮放在容器对象中，如Panel或GroupBox。这将在Windows窗体中自动将它们组合在一起。

GroupBox更好。但不只是组框，甚至可以使用Panels (System.Windows.Forms.Panel)。

• 这是非常有用的，当你正在设计互联网协议版本4设置对话框。(用你的电脑(windows)检查，然后你就可以理解行为)

我喜欢WPF中分组RadioButtons的概念。有一个属性GroupName指定哪些RadioButton控件是互斥的(http://msdn.microsoft.com/de-de/library/system.windows.controls.radiobutton.aspx)。

所以我为WinForms写了一个支持这个特性的派生类:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using System.Windows.Forms.VisualStyles;
using System.Drawing;
using System.ComponentModel;


namespace Use.your.own
{
public class AdvancedRadioButton : CheckBox
{
public enum Level { Parent, Form };


[Category("AdvancedRadioButton"),
Description("Gets or sets the level that specifies which RadioButton controls are affected."),
DefaultValue(Level.Parent)]
public Level GroupNameLevel { get; set; }


[Category("AdvancedRadioButton"),
Description("Gets or sets the name that specifies which RadioButton controls are mutually exclusive.")]
public string GroupName { get; set; }


protected override void OnCheckedChanged(EventArgs e)
{
base.OnCheckedChanged(e);


if (Checked)
{
var arbControls = (dynamic)null;
switch (GroupNameLevel)
{
case Level.Parent:
if (this.Parent != null)
arbControls = GetAll(this.Parent, typeof(AdvancedRadioButton));
break;
case Level.Form:
Form form = this.FindForm();
if (form != null)
arbControls = GetAll(this.FindForm(), typeof(AdvancedRadioButton));
break;
}
if (arbControls != null)
foreach (Control control in arbControls)
if (control != this &&
(control as AdvancedRadioButton).GroupName == this.GroupName)
(control as AdvancedRadioButton).Checked = false;
}
}


protected override void OnClick(EventArgs e)
{
if (!Checked)
base.OnClick(e);
}


protected override void OnPaint(PaintEventArgs pevent)
{
CheckBoxRenderer.DrawParentBackground(pevent.Graphics, pevent.ClipRectangle, this);


RadioButtonState radioButtonState;
if (Checked)
{
radioButtonState = RadioButtonState.CheckedNormal;
if (Focused)
radioButtonState = RadioButtonState.CheckedHot;
if (!Enabled)
radioButtonState = RadioButtonState.CheckedDisabled;
}
else
{
radioButtonState = RadioButtonState.UncheckedNormal;
if (Focused)
radioButtonState = RadioButtonState.UncheckedHot;
if (!Enabled)
radioButtonState = RadioButtonState.UncheckedDisabled;
}


Size glyphSize = RadioButtonRenderer.GetGlyphSize(pevent.Graphics, radioButtonState);
Rectangle rect = pevent.ClipRectangle;
rect.Width -= glyphSize.Width;
rect.Location = new Point(rect.Left + glyphSize.Width, rect.Top);


RadioButtonRenderer.DrawRadioButton(pevent.Graphics, new System.Drawing.Point(0, rect.Height / 2 - glyphSize.Height / 2), rect, this.Text, this.Font, this.Focused, radioButtonState);
}


private IEnumerable<Control> GetAll(Control control, Type type)
{
var controls = control.Controls.Cast<Control>();


return controls.SelectMany(ctrl => GetAll(ctrl, type))
.Concat(controls)
.Where(c => c.GetType() == type);
}
}
}

无面板单选按钮

public class RadioButton2 : RadioButton
{
public string GroupName { get; set; }
}


private void RadioButton2_Clicked(object sender, EventArgs e)
{
RadioButton2 rb = (sender as RadioButton2);


if (!rb.Checked)
{
foreach (var c in Controls)
{
if (c is RadioButton2 && (c as RadioButton2).GroupName == rb.GroupName)
{
(c as RadioButton2).Checked = false;
}
}


rb.Checked = true;
}
}


private void Form1_Load(object sender, EventArgs e)
{
//a group
RadioButton2 rb1 = new RadioButton2();
rb1.Text = "radio1";
rb1.AutoSize = true;
rb1.AutoCheck = false;
rb1.Top = 50;
rb1.Left = 50;
rb1.GroupName = "a";
rb1.Click += RadioButton2_Clicked;
Controls.Add(rb1);


RadioButton2 rb2 = new RadioButton2();
rb2.Text = "radio2";
rb2.AutoSize = true;
rb2.AutoCheck = false;
rb2.Top = 50;
rb2.Left = 100;
rb2.GroupName = "a";
rb2.Click += RadioButton2_Clicked;
Controls.Add(rb2);


//b group
RadioButton2 rb3 = new RadioButton2();
rb3.Text = "radio3";
rb3.AutoSize = true;
rb3.AutoCheck = false;
rb3.Top = 80;
rb3.Left = 50;
rb3.GroupName = "b";
rb3.Click += RadioButton2_Clicked;
Controls.Add(rb3);


RadioButton2 rb4 = new RadioButton2();
rb4.Text = "radio4";
rb4.AutoSize = true;
rb4.AutoCheck = false;
rb4.Top = 80;
rb4.Left = 100;
rb4.GroupName = "b";
rb4.Click += RadioButton2_Clicked;
Controls.Add(rb4);
}

如果你不能将它们放入一个容器中，那么你必须编写代码来改变每个RadioButton的检查状态:

private void rbDataSourceFile_CheckedChanged(object sender, EventArgs e)
{
rbDataSourceNet.Checked = !rbDataSourceFile.Checked;
}


private void rbDataSourceNet_CheckedChanged(object sender, EventArgs e)
{
rbDataSourceFile.Checked = !rbDataSourceNet.Checked;
}

将单选按钮放在GroupBox内(或其他面板)