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

In Windows form, GroupBox is a container which contains multiple controls in it and the controls are related to each other. Or in other words, GroupBox is a frame display around a group of controls with a suitable optional title. Or a GroupBox is used to categorize the related controls in a group. In GroupBox, you can set the background color of the GroupBox in the form using the BackColor Property. This property is an ambient property. You can set this property in two different ways:

1. Design-Time: It is the easiest way to set the background color of the GroupBox 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: Next, drag and drop the GroupBox from the toolbox to the form as shown in the below image:

  

• Step 3: After drag and drop you will go to the properties of the GroupBox and set the background color of the GroupBox as shown in the below image:

  

  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 GroupBox programmatically with the help of given syntax:

public virtual System.Drawing.Color BackColor { get; set; }

Here, Color indicates the background color of the GroupBox. The following steps show how to set the background color of the GroupBox dynamically:

• Step 1: Create a GroupBox using the GroupBox() constructor is provided by the GroupBox class.

  // Creating a GroupBox
  GroupBox gbox = new GroupBox(); 
  

• Step 2: After creating GroupBox, set the BackColor property of the GroupBox provided by the GroupBox class.

  // Setting the background color
  gbox.BackColor = Color.LemonChiffon;
  

• Step 3: And last add this GroupBox control to the form and also add other controls on the GroupBox using the following statements:

  // Adding groupbox in the form
  this.Controls.Add(gbox);
  
  and 
  
  // Adding this control 
  // to the GroupBox
  gbox.Controls.Add(c2);
  

  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 WindowsFormsApp45 {
  
  public partial class Form1 : Form {
  
      public Form1()
      {
          InitializeComponent();
      }
  
      private void Form1_Load(object sender, EventArgs e)
      {
          // Creating and setting
          // properties of the GroupBox
          GroupBox gbox = new GroupBox();
          gbox.Location = new Point(179, 145);
          gbox.Size = new Size(329, 94);
          gbox.Text = "Select Gender";
          gbox.Name = "Mybox";
          gbox.BackColor = Color.LemonChiffon;
          gbox.ForeColor = Color.Maroon;
  
          // Adding groupbox in the form
          this.Controls.Add(gbox);
  
          // Creating and setting
          // properties of the CheckBox
          CheckBox c1 = new CheckBox();
          c1.Location = new Point(40, 42);
          c1.Size = new Size(49, 20);
          c1.Text = "Male";
  
          // Adding this control
          // to the GroupBox
          gbox.Controls.Add(c1);
  
          // Creating and setting properties
          // of the CheckBox
          CheckBox c2 = new CheckBox();
          c2.Location = new Point(183, 39);
          c2.Size = new Size(69, 20);
          c2.Text = "Female";
  
          // Adding this control
          // to the GroupBox
          gbox.Controls.Add(c2);
      }
  }
  }

  Output: