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C# NumericUpDown Control: Windows Forms
Use the NumericUpDown control to add a narrow control to adjust a number.NumericUpDown. Programs sometimes need an arrow control. When this arrow is clicked, a number increments or decrement. The Windows Forms platform offers the NumericUpDown control—a textbox with a number and two scroll buttons to change the value.
Start. Please add a NumericUpDown control to your program in the Visual Studio designer by double-clicking on the entry in the Toolbox. Next, you can change properties of the NumericUpDown by right-clicking on it and selecting Properties.
Here: In this code example, we added the ValueChanged event handler by double-clicking on the NumericUpDown control.
Example of NumericUpDown and ValueChanged: C#
using System;
using System.Windows.Forms;
namespace WindowsFormsApplication12
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
// You can change other program parts when the value changes.
this.Text = "Value changed to " + numericUpDown1.Value.ToString();
}
}
}
In numericUpDown1_ValueChanged, the Value property is accessed on the numericUpDown1 instance. This returns a decimal that equals the value of the NumericUpDown instance. In C# code, we acquire the Value property of the NumericUpDown.
Properties. NumericUpDown offers two properties called Minimum and Maximum. They determine the lowest and highest value the NumericUpDown control can be scrolled to. By default, the NumericUpDown is limited to values of 0 to 100 inclusive.Property
The Increment property determines how far the NumericUpDown will change its value up or down depending on the arrow clicked. Sometimes it may be useful to increase the number by more than 1 or less than one.
Note: It is possible to use numbers that have decimal places in the Increment property.
The DecimalPlaces property allows you to set the number of digits that come after the decimal place in the NumericUpDown control. Again, this property may be useful in some programs that use the NumericUpDown but not in many others.
The ThousandsSeparator property gives you a culture-sensitive thousands separator. For a US English culture, this will cause the number 1000 to be displayed with a comma. We see the value 1,000.
Tip: This property would be useful for NumericUpDown controls that represent money amounts.
Hexadecimal property. It is possible to have the NumericUpDown control display its numbers in hexadecimal format using this property and setting it to True. With hexadecimal, the number 10 is displayed as the letter A.Format: Hex
InterceptArrowKeys. This allows you to disable having the arrow keys change the number value in the NumericUpDown control. When true, users can press arrow keys to change the location of the caret for editing the number.
And: If you leave this on the default of True, arrow keys will change the number value up or down.
Align. Finally, there are alignment properties available on the NumericUpDown control. The TextAlign property sets the position of the text in its part of the control. You can select Left, Right, or Center.
And: The UpDownAlign property allows you to change the location of the arrow buttons—here you can select Left or Right.
Summary. NumericUpDown represents a numeric textbox that can be increased or decreased in value. With many properties and event handlers, the NumericUpDown control is ideal for user interfaces where a number is entered or adjusted.
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- C# Sentinel Optimization
- C# SequenceEqual Method (If Two Arrays Are Equal)
- C# Shift Operators (Bitwise)
- C# Short and ushort Types
- C# Single Method: Get Element If Only One Matches
- C# SingleOrDefault
- C# Singleton Pattern Versus Static Class
- C# Singleton Class
- C# sizeof Keyword
- C# Skip and SkipWhile Examples
- C# Sleep Method (Pause)
- C# Sort Dictionary: Keys and Values
- C# Sort by File Size
- C# Sort, Ignore Leading Chars
- C# Sort KeyValuePair List: CompareTo
- C# Sort Strings by Length
- C# Thread.SpinWait Example
- C# Math.Sqrt Method
- C# stackalloc Operator
- C# StackOverflowException
- C# StartsWith and EndsWith String Methods
- C# Static Array
- C# Static Dictionary
- C# Stopwatch Examples
- C# Stream
- C# StreamReader ReadToEnd Example (Read Entire File)
- C# StreamReader ReadToEndAsync Example (Performance)
- C# StreamReader Examples
- C# StreamWriter Examples
- C# String Append (Add Strings)
- C# String Compare and CompareTo Methods
- C# String Constructor (new string)
- C# string.Copy Method
- C# CopyTo String Method: Put Chars in Array
- C# Empty String Examples
- C# String Equals Examples
- C# String For Loop, Count Spaces in String
- C# string.Intern and IsInterned
- C# String IsUpper, IsLower
- C# String Length Property: Get Character Count
- C# String Literal: Newline and Quote Examples
- C# StringBuilder Capacity
- C# StringBuilder Clear (Set Length to Zero)
- C# StringBuilder Data Types
- C# StringBuilder Performance
- C# StringBuilder Equals (If Chars Are Equal)
- C# StringBuilder Memory
- C# StringBuilder ToString: Get String From StringBuilder
- C# StringWriter Class
- C# Sum Method: Add up All Numbers
- C# Switch Char, Test Chars With Cases
- C# Switch Enum
- C# System (using System namespace)
- C# Tag Property: Windows Forms
- C# TextInfo Examples
- C# TextReader, Returned by File.OpenText
- C# TextWriter, Returned by File.CreateText
- C# this Keyword
- C# ThreadPool
- C# Thread Join Method (Join Array of Threads)
- C# ThreadPool.SetMinThreads Method
- C# TimeZone Examples
- C# Get Title From HTML With Regex
- C# ToArray Extension Method
- C# ToCharArray: Convert String to Array
- C# ToDictionary Method
- C# Token
- C# ToList Extension Method
- C# ToLookup Method (Get ILookup)
- C# ToLower and ToUpper: Uppercase and Lowercase Strings
- ToolStripContainer Control: Dock, Properties
- C# ToolTip: Windows Forms
- C# ToString Integer Optimization
- C# ToString: Get String From Object
- C# ToTitleCase Method
- C# TrackBar: Windows Forms
- C# Tree and Nodes Example: Directed Acyclic Word Graph
- C# TreeView Tutorial
- C# Trim Strings
- C# Thread Methods
- C# History
- C# Features
- C# Variables
- C# Data Types
- C# Operators
- C# Keywords
- C# New Features | C# Version Features
- C# Programs
- C# Program to swap numbers without third variable
- C# Program to convert Decimal to Binary
- C# Program to Convert Number in Characters
- C# Program to Print Alphabet Triangle
- C# Program to print Number Triangle
- C# Program to generate Fibonacci Triangle
- C# String Compare() method
- C# String CompareOrdinal() method
- C# String CompareTo() method
- C# String Concat() method
- C# String Contains() method
- C# String CopyTo() method
- C# String EndsWith() method
- C# String Equals() method
- C# String Format() method
- C# String IndexOf() method
- C# String Insert() method
- C# String Intern(String str) method
- C# String IsInterned() method
- C# String Normalize() method
- C# String IsNullOrEmpty() method
- C# String IsNullOrWhiteSpace() method
- C# String Join() method
- C# String LastIndexOf() method
- C# String LastIndexOfAny() method
- C# String PadLeft() method
- C# String PadRight() method
- C# Nullable
- C# String Remove() method
- C# String Replace() method
- C# String Split() method
- C# String StartsWith() method
- C# String SubString() method
- C# Partial Types
- C# Iterators
- C# Delegate Covariance
- C# Delegate Inference
- C# Anonymous Types
- C# Extension Methods
- C# Query Expression
- C# Partial Method
- C# Implicitly Typed Local Variable
- C# Object and Collection Initializer
- C# Auto Implemented Properties
- C# Dynamic Binding
- C# Named and Optional Arguments
- C# Asynchronous Methods
- C# Caller Info Attributes
- C# Using Static Directive
- C# Exception Filters
- C# Await in Catch Finally Blocks
- C# Default Values for Getter Only Properties
- C# Expression Bodied Members
- C# Null Propagator
- C# String Interpolation
- C# nameof operator
- C# Dictionary Initializer
- C# Pattern Matching
- C# Tuples
- C# Deconstruction
- C# Local Functions
- C# Binary Literals
- C# Ref Returns and Locals
- C# Expression Bodied Constructors and Finalizers
- C# Expression Bodied Getters and Setters
- C# Async Main
- C# Default Expression