CheckBox in C#

The CheckBox control is part of Windows form. It is a graphical user interface (GUI) control that is either checked or unchecked and used to select single or multiple elements from the given list or it can provide us options like yes or no, true or false, etc. It can be displayed as an image text or both. The CheckBox is a class and is defined under System.Windows.Forms namespace.

Ways to Create a Checkbox In Windows Forms

There are mainly two ways to create a checkbox in Windows forms which are mentioned below.

• Drag and drop (Design-Time)
• Custom CheckBox (Run-Time)

Drag and drop (Design-Time)

This is the easiest way to create a CheckBox in Windows Forms using Visual Studio we just have to open the toolbox and drag and drop the CheckBox on the form in the designer and further we can change the appearance of the CheckBox using the properties. Follow these steps to create a CheckBox.

Step 1: Now locate the project with the name here we are using the default name which is Form1 and it will open a form in the editor which we can further modify.

In the image, we have two files that are open one Design and there is Form1.cs these two play a major role. We use the Form 1.cs file for the custom logic.

Step 2: Now open a Toolbox go to the view > Toolbox or ctrl + alt + x.

Step 3. Now open the common controls and drag and drop the CheckBox on the form where we want it to be placed.

Step 4. Now open the properties of the Checkbox press right-click on the CheckBox and it will open the properties solution explorer now we can change the text content of the checkbox

Now we can add different checkboxes and change their appearance and behaviour in the properties these are the changes we created with a label text to make a checkbox.

Output:

In the output image, we can see that here we can choose multiple options from the given options unlike a RadioButton where we can choose only one option from the given ones.

Custom CheckBox (Run-Time)

In this method, we are going to modify the Form1.cs file and add custom code modifications in C# to change the appearance of the CheckBox according to our requirements. Follow these step-by-step processes.

Step 1: Create a checkbox using the CheckBox() constructor provided by the CheckBox class.

// Creating checkbox

CheckBox Mycheckbox = new CheckBox();

Step 2: After creating CheckBox, set the properties of the CheckBox provided by the CheckBox class.

// Set height of the checkbox

Mycheckbox.Height = 50;

// Set width of the checkbox

Mycheckbox.Width = 100;

// Set location of the checkbox

Mycheckbox.Location = new Point(229, 136);

// Set text in the checkbox

Mycheckbox.Text = “Married”;

// Set font of the checkbox

Mycheckbox.Font = new Font(“Bradley Hand ITC”, 12);

Step 3: And last add this checkbox control to form using Add() method.

// Add this checkbox to form

this.Controls.Add(Mycheckbox);

Step 4: Now double-click on the button in Design and it will open the Form cs file where code is written in C#. Here the program file is Form 1.cs Now write this code in Form1.cs file

Form1.cs file:

namespace WinFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Label l = new Label();
            l.Text = "Choose the languages you speak";
            l.AutoSize = true;
            l.Location = new Point(180, 111);
            l.Font = new Font("Bradley Hand ITC", 12);
            // Adding label to form
            this.Controls.Add(l);

            // Creating and setting the properties of CheckBox
            CheckBox Mycheckbox = new CheckBox();
            Mycheckbox.Height = 50;
            Mycheckbox.Width = 100;
            Mycheckbox.Location = new Point(229, 136);
            Mycheckbox.Text = "English";
            Mycheckbox.Font = new Font("Bradley Hand ITC", 12);

            // Adding checkbox to form
            this.Controls.Add(Mycheckbox);

            // Creating and setting the properties of CheckBox
            CheckBox Mycheckbox1 = new CheckBox();
            Mycheckbox1.Location = new Point(230, 198);
            Mycheckbox1.Text = "Hindi";
            Mycheckbox1.AutoSize = true;
            Mycheckbox1.Font = new Font("Bradley Hand ITC", 12);

            // Adding checkbox to form
            this.Controls.Add(Mycheckbox1);
        }
    }
}

Output:

Properties of CheckBox

Events On CheckBox

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Article Tags :

• C#
• CSharp-Windows-Forms-Namespace