In Windows Forms, NumericUpDown control is used to provide a Windows spin box or an up-down control which displays the numeric values. Or in other words, NumericUpDown control provides an interface which moves using up and down arrow and holds some pre-defined numeric value. The NumericUpDown class is used to represent the windows numeric up-down box and also provide different types of properties, methods, and events. It is defined under System.Windows.Forms namespace. In C# you can create a NumericUpDown in the windows form by using two different ways:

1. Design-Time: It is the easiest way to create a NumericUpDown 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 NumericUpDown control from the toolbox to the form.

  

• Step 3: After drag and drop you will go to the properties of the NumericUpDown control to modify NumericUpDown according to your requirement.

  

  Output:

  

2. Run-Time: It is a little bit trickier than the above method. In this method, you can create a NumericUpDown control programmatically with the help of syntax provided by the NumericUpDown class. The following steps show how to set the create NumericUpDown dynamically:

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

  // Creating a NumericUpDown control
  NumericUpDown nbox = new NumericUpDown(); 
  

• Step 2: After creating a NumericUpDown control, set the property of the NumericUpDown control provided by the NumericUpDown class.

  // Setting the properties of NumericUpDown control
  nbox.Location = new Point(386, 130); 
  nbox.Size = new Size(126, 26); 
  nbox.Font = new Font("Bodoni MT", 12); 
  nbox.Value = 18; 
  nbox.Minimum = 18; 
  nbox.Maximum = 30; 
  nbox.BackColor = Color.LightGreen; 
  nbox.ForeColor = Color.DarkGreen; 
  nbox.Increment = 1; 
  nbox.Name = "MySpinBox"; 
  

• Step 3: And last add this NumericUpDown control to the form using the following statement:

  // Adding this control 
  // to the form 
  this.Controls.Add(nbox); 
  

  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 WindowsFormsApp42 {    public partial class Form1 : Form {        public Form1()     {         InitializeComponent();     }        private void Form1_Load(object sender, EventArgs e)     {         // Creating and setting the         // properties of the labels         Label l1 = new Label();         l1.Location = new Point(348, 61);         l1.Size = new Size(215, 20);         l1.Text = "Form";         l1.Font = new Font("Bodoni MT", 12);         this.Controls.Add(l1);            Label l2 = new Label();         l2.Location = new Point(242, 136);         l2.Size = new Size(103, 20);         l2.Text = "Enter Age";         l2.Font = new Font("Bodoni MT", 12);         this.Controls.Add(l2);            // Creating and setting the         // properties of NumericUpDown         NumericUpDown nbox = new NumericUpDown();         nbox.Location = new Point(386, 130);         nbox.Size = new Size(126, 26);         nbox.Font = new Font("Bodoni MT", 12);         nbox.Value = 18;         nbox.Minimum = 18;         nbox.Maximum = 30;         nbox.BackColor = Color.LightGreen;         nbox.ForeColor = Color.DarkGreen;         nbox.Increment = 1;         nbox.Name = "MySpinBox";            // Adding this control         // to the form         this.Controls.Add(nbox);     } } }

  Output:

  

Constructor

Properties

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.