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This article is to share with you about how to use Winform to customize a checkbox in C#. The editor thinks it is very practical, so I share it with you. I hope you can get something after reading this article.

Add a user control named: UCRadioButton

Take a look at the attributes.

[Description ("check change event"), Category ("Custom")]

Public event EventHandler CheckedChangeEvent

Private Font _ Font = new Font ("Microsoft Acer", 12)

[Description ("font"), Category ("custom")]

Public new Font Font

{

Get {return _ Font;}

Set

{

_ Font = value

Label1.Font = value

}

}

Private Color _ ForeColor = Color.FromArgb (62, 62, 62)

[Description ("font color"), Category ("custom")]

Public new Color ForeColor

{

Get {return _ ForeColor;}

Set

{

Label1.ForeColor = value

_ ForeColor = value

}

}

Private string _ Text = "radio button"

[Description ("text"), Category ("custom")]

Public string TextValue

{

Get {return _ Text;}

Set

{

Label1.Text = value

_ Text = value

}

}

Private bool _ checked = false

[Description ("selected"), Category ("Custom")]

Public bool Checked

{

Get

{

Return _ checked

}

Set

{

If (_ checked! = value)

{

_ checked = value

If (base.Enabled)

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton1

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton0

}

}

Else

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton10

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton00

}

}

SetCheck (value)

If (CheckedChangeEvent! = null)

{

CheckedChangeEvent (this, null)

}

}

}

}

Private string _ groupName

[Description ("Group name"), Category ("Custom")]

Public string GroupName

{

Get {return _ groupName;}

Set {_ groupName = value;}

}

Public new bool Enabled

{

Get

{

Return base.Enabled

}

Set

{

Base.Enabled = value

If (value)

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton1

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton0

}

}

Else

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton10

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton00

}

}

}

}

When the status change is selected, the corresponding processing needs to be done according to the group name.

Private void SetCheck (bool bln)

{

If (! bln)

Return

If (this.Parent! = null)

{

Foreach (Control c in this.Parent.Controls)

{

If (c is UCRadioButton & & c! = this)

{

UCRadioButton uc = (UCRadioButton) c

If (_ groupName = = uc.GroupName & & uc.Checked)

{

Uc.Checked = false

Return

}

}

}

}

}

Change the selected state when you click

Private void Radio_MouseDown (object sender, MouseEventArgs e)

{

This.Checked = true

}

Do some processing when loading to prevent multiple selections.

Private void UCRadioButton_Load (object sender, EventArgs e)

{

If (this.Parent! = null & & this._checked)

{

Foreach (Control c in this.Parent.Controls)

{

If (c is UCRadioButton & & c! = this)

{

UCRadioButton uc = (UCRadioButton) c

If (_ groupName = = uc.GroupName & & uc.Checked)

{

Checked = false

Return

}

}

}

}

}

Let's take a look at the complete code

/ / copyright Huang Zhenghui Communication Group: 568015492 QQ:623128629

/ / File name: UCRadioButton.cs

/ / creation date: 2019-08-15 16:03:13

/ / function description: RadioButton

/ / Project address: https://gitee.com/kwwwvagaa/net_winform_custom_control

Using System

Using System.Collections.Generic

Using System.ComponentModel

Using System.Drawing

Using System.Data

Using System.Linq

Using System.Text

Using System.Windows.Forms

Namespace HZH_Controls.Controls

{

[DefaultEvent ("CheckedChangeEvent")]

Public partial class UCRadioButton: UserControl

{

[Description ("check change event"), Category ("Custom")]

Public event EventHandler CheckedChangeEvent

Private Font _ Font = new Font ("Microsoft Acer", 12)

[Description ("font"), Category ("custom")]

Public new Font Font

{

Get {return _ Font;}

Set

{

_ Font = value

Label1.Font = value

}

}

Private Color _ ForeColor = Color.FromArgb (62, 62, 62)

[Description ("font color"), Category ("custom")]

Public new Color ForeColor

{

Get {return _ ForeColor;}

Set

{

Label1.ForeColor = value

_ ForeColor = value

}

}

Private string _ Text = "radio button"

[Description ("text"), Category ("custom")]

Public string TextValue

{

Get {return _ Text;}

Set

{

Label1.Text = value

_ Text = value

}

}

Private bool _ checked = false

[Description ("selected"), Category ("Custom")]

Public bool Checked

{

Get

{

Return _ checked

}

Set

{

If (_ checked! = value)

{

_ checked = value

If (base.Enabled)

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton1

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton0

}

}

Else

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton10

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton00

}

}

SetCheck (value)

If (CheckedChangeEvent! = null)

{

CheckedChangeEvent (this, null)

}

}

}

}

Private string _ groupName

[Description ("Group name"), Category ("Custom")]

Public string GroupName

{

Get {return _ groupName;}

Set {_ groupName = value;}

}

Public new bool Enabled

{

Get

{

Return base.Enabled

}

Set

{

Base.Enabled = value

If (value)

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton1

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton0

}

}

Else

{

If (_ checked)

{

Panel1.BackgroundImage = Properties.Resources.radioButton10

}

Else

{

Panel1.BackgroundImage = Properties.Resources.radioButton00

}

}

}

}

Public UCRadioButton ()

{

InitializeComponent ()

}

Private void SetCheck (bool bln)

{

If (! bln)

Return

If (this.Parent! = null)

{

Foreach (Control c in this.Parent.Controls)

{

If (c is UCRadioButton & & c! = this)

{

UCRadioButton uc = (UCRadioButton) c

If (_ groupName = = uc.GroupName & & uc.Checked)

{

Uc.Checked = false

Return

}

}

}

}

}

Private void Radio_MouseDown (object sender, MouseEventArgs e)

{

This.Checked = true

}

Private void UCRadioButton_Load (object sender, EventArgs e)

{

If (this.Parent! = null & & this._checked)

{

Foreach (Control c in this.Parent.Controls)

{

If (c is UCRadioButton & & c! = this)

{

UCRadioButton uc = (UCRadioButton) c

If (_ groupName = = uc.GroupName & & uc.Checked)

{

Checked = false

Return

}

}

}

}

}

}

}

Namespace HZH_Controls.Controls

{

Partial class UCRadioButton

{

/ / /

/ / required designer variables.

/ / /

Private System.ComponentModel.IContainer components = null

/ / /

/ Clean up all resources in use.

/ / /

/ / if the managed resource should be released, true; otherwise false.

Protected override void Dispose (bool disposing)

{

If (disposing & & (components! = null))

{

Components.Dispose ()

}

Base.Dispose (disposing)

}

# Code generated by region component designer

/ / /

/ / the designer supports the required methods-do not

/ / use the code editor to modify the contents of this method.

/ / /

Private void InitializeComponent ()

{

This.label1 = new System.Windows.Forms.Label ()

This.panel1 = new System.Windows.Forms.Panel ()

This.SuspendLayout ()

/ /

/ / label1

/ /

This.label1.Dock = System.Windows.Forms.DockStyle.Fill

This.label1.Font = new System.Drawing.Font ("Microsoft Acer", 12F)

This.label1.ForeColor = System.Drawing.Color.FromArgb (int) ((byte) (62), ((int) ((byte) (62), ((int) ((byte) (62))

This.label1.Location = new System.Drawing.Point (18,0)

This.label1.Name = "label1"

This.label1.Padding = new System.Windows.Forms.Padding (5,0,0,0)

This.label1.Size = new System.Drawing.Size (215,30)

This.label1.TabIndex = 3

This.label1.Text = "radio button"

This.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft

This.label1.MouseDown + = new System.Windows.Forms.MouseEventHandler (this.Radio_MouseDown)

/ /

/ / panel1

/ /

This.panel1.BackgroundImage = global::HZH_Controls.Properties.Resources.radioButton0

This.panel1.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Zoom

This.panel1.Dock = System.Windows.Forms.DockStyle.Left

This.panel1.Location = new System.Drawing.Point (0,0)

This.panel1.Name = "panel1"

This.panel1.Size = new System.Drawing.Size (18,30)

This.panel1.TabIndex = 2

This.panel1.MouseDown + = new System.Windows.Forms.MouseEventHandler (this.Radio_MouseDown)

/ /

/ / UCRadioButton

/ /

This.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None

This.Controls.Add (this.label1)

This.Controls.Add (this.panel1)

This.Name = "UCRadioButton"

This.Size = new System.Drawing.Size (233,30)

This.Load + = new System.EventHandler (this.UCRadioButton_Load)

This.MouseDown + = new System.Windows.Forms.MouseEventHandler (this.Radio_MouseDown)

This.ResumeLayout (false)

}

# endregion

Private System.Windows.Forms.Label label1

Private System.Windows.Forms.Panel panel1

}

}

The above is how to customize a checkbox with Winform in C#. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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