How to set the Background Color of the RadioButton in C#?

30 Jun, 2019
In Windows Forms, RadioButton control is used to select a single option among the group of the options. For example, select your gender from the given list, so you will choose only one option among three options like Male or Female or Transgender. In Windows Forms, you are allowed to adjust the background color of the RadioButton using the BackColor Property of the RadioButton which makes your RadioButton more attractive. You can set this property in two different ways:
1. Design-Time: It is the easiest way to set the background color of the RadioButton as shown in the following steps:
Step 1: Create a windows form as shown in the below image:Visual Studio -> File -> New -> Project -> WindowsFormApp
Step 2: Drag the RadioButton control from the ToolBox and drop it on the windows form. You are allowed to place a RadioButton control anywhere on the windows form according to your need.
Step 3: After drag and drop you will go to the properties of the RadioButton control to set the background color of the RadioButton.Output:
Output:
2. Run-Time: It is a little bit trickier than the above method. In this method, you can set the background color of the RadioButton control programmatically with the help of given syntax:
public override System.Drawing.Color BackColor { get; set; }
Here, Color indicates the background color of the RadioButton. The following steps show how to set the background color of the RadioButton dynamically:
Step 1: Create a radio button using the RadioButton() constructor is provided by the RadioButton class.// Creating radio button
RadioButton r1 = new RadioButton();

// Creating radio button
RadioButton r1 = new RadioButton();

Step 2: After creating RadioButton, set the BackColor property of the RadioButton provided by the RadioButton class.// Setting the background color of the radio button
r1.BackColor = Color.LightSalmon;

// Setting the background color of the radio button
r1.BackColor = Color.LightSalmon;

Step 3: And last add this RadioButton control to the form using Add() method.// Add this radio button to the form
this.Controls.Add(r1);
Example:using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;  namespace WindowsFormsApp20 {  public partial class Form1 : Form {      public Form1()    {        InitializeComponent();    }      private void RadioButton2_CheckedChanged(object sender,                                               EventArgs e)    {    }      private void Form1_Load(object sender,                              EventArgs e)    {        // Creating and setting label        Label l = new Label();        l.AutoSize = true;        l.Location = new Point(176, 40);        l.Text = "Select Your Branch";          // Adding this label to the form        this.Controls.Add(l);          // Creating and setting the         // properties of the RadioButton        RadioButton r1 = new RadioButton();        r1.AutoSize = true;        r1.Text = "CSE";        r1.Location = new Point(286, 40);        r1.BackColor = Color.LightSalmon;          // Adding this label to the form        this.Controls.Add(r1);          // Creating and setting the         // properties of the RadioButton        RadioButton r2 = new RadioButton();        r2.AutoSize = true;        r2.Text = "ECE";        r2.Location = new Point(356, 40);        r2.BackColor = Color.LightSalmon;          // Adding this label to the form        this.Controls.Add(r2);    }}}Output:
// Add this radio button to the form
this.Controls.Add(r1);

Example:
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;  namespace WindowsFormsApp20 {  public partial class Form1 : Form {      public Form1()    {        InitializeComponent();    }      private void RadioButton2_CheckedChanged(object sender,                                               EventArgs e)    {    }      private void Form1_Load(object sender,                              EventArgs e)    {        // Creating and setting label        Label l = new Label();        l.AutoSize = true;        l.Location = new Point(176, 40);        l.Text = "Select Your Branch";          // Adding this label to the form        this.Controls.Add(l);          // Creating and setting the         // properties of the RadioButton        RadioButton r1 = new RadioButton();        r1.AutoSize = true;        r1.Text = "CSE";        r1.Location = new Point(286, 40);        r1.BackColor = Color.LightSalmon;          // Adding this label to the form        this.Controls.Add(r1);          // Creating and setting the         // properties of the RadioButton        RadioButton r2 = new RadioButton();        r2.AutoSize = true;        r2.Text = "ECE";        r2.Location = new Point(356, 40);        r2.BackColor = Color.LightSalmon;          // Adding this label to the form        this.Controls.Add(r2);    }}}
Output:
C#
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.