如何在Windows窗体应用程序中分组单选按钮(很像ASP。净radiobuttonlist !) ?
所以我可以在选项中选择的每个情况之间切换。
当前回答
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);
}
}
}
其他回答
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);
}
GroupBox更好。但不只是组框，甚至可以使用面板(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)
看看把你的单选按钮放在一个GroupBox。
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);
}
}
}
默认情况下，共享容器内的所有单选按钮都在同一个组中。 意思是，如果你选中了其中一个，其他的将不勾选。 如果您想要创建独立的单选按钮组，则必须将它们放置到不同的容器(如Group Box)中，或者通过后面的代码控制它们的Checked状态。
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