Click here to Skip to main content
15,444,627 members
Articles / Desktop Programming / Windows Forms
Technical Blog
Posted 29 Aug 2012

Tagged as


34 bookmarked

(AGauge) WinForms Gauge Control

Rate me:
Please Sign up or sign in to vote.
4.96/5 (25 votes)
29 Aug 2012Zlib1 min read
(AGauge) WinForms Gauge control


Image 1

Original AGauge control

AGauge is a gauge control for WinForms create by A.J.Bauer using GDI+. The original code was published in "Code Project - A fast and performing gauge" The version that I published here is an improved version of AGauge which contains the following changes.


Dynamic Gauge Label and Gauge Range

Properties for gauge label (previously known as CapText) and range are grouped into GaugeRanges and GaugeLabels which allow us to create any number of range and label as we wish. Range and label can be edited either from code or using the collection editor from the properties window.

System.ComponentModel.Description("Gauge Ranges.")]
public AGaugeRangeCollection GaugeRanges { get { return _GaugeRanges; } }
private AGaugeRangeCollection _GaugeRanges;

System.ComponentModel.Description("Gauge Labels.")]
public AGaugeLabelCollection GaugeLabels { get { return _GaugeLabels; } }
private AGaugeLabelCollection _GaugeLabels;

Besides, each label can use different Font settings since label is an instance of AGaugeLabel.

Image 2

Added NeedleType Enumeration

AGauge control has 2 different types of needle design selectable from NeedleType property. Type of NeedleType property was changed from Int32 (0 or 1) to enumeration type (NeedleType.Advance or NeedleType.Simple) to avoid invalid entry from user.

Image 3


Update ValueInRangeChangedEvent

ValueInRangeChangedDelegate was changed to ValueInRangeChangedEvent to allow multiple subscriptions. The event is changed to trigger only if value is entering or leaving a defined range. Besides, ValueInRangeChangedEventArgs was updated to hold current range and gauge value.

[Description("This event is raised if the value is entering or leaving
  defined range.")]
public event EventHandler<ValueInRangeChangedEventArgs> ValueInRangeChanged;
private void OnValueInRangeChanged(AGaugeRange range, Single value)
  EventHandler<ValueInRangeChangedEventArgs> e = ValueInRangeChanged;
  if (e != null) e(this, new ValueInRangeChangedEventArgs(range, value,

/// <summary>
/// Event argument for <see cref="ValueInRangeChanged"/> event.
/// </summary>
public class ValueInRangeChangedEventArgs : EventArgs
  /// <summary>
  /// Affected GaugeRange
  /// </summary>
  public AGaugeRange Range { get; private set; }
  /// <summary>
  /// Gauge Value
  /// </summary>
  public Single Value { get; private set; }
  /// <summary>
  /// True if value is within current range.
  /// </summary>
  public bool InRange { get; private set; }
  public ValueInRangeChangedEventArgs(AGaugeRange range, Single value,
                                          bool inRange)
    this.Range = range;
    this.Value = value;
    this.InRange = inRange;

Added ValueChangedEvent

ValueChanged event is added to notify user whenever gauge value is updated. Note that attempting to set gauge value out of defined gauge range will not trigger this event.

[Description("This event is raised when gauge value changed.")]
public event EventHandler ValueChanged;
private void OnValueChanged()
  EventHandler e = ValueChanged;
  if (e != null) e(this, null);


This article, along with any associated source code and files, is licensed under The zlib/libpng License


  • 28/08/2012: Initial release (Version 2.0.0)


This article, along with any associated source code and files, is licensed under The zlib/libpng License

Written By
Technical Lead
Malaysia Malaysia
Official Page:

Comments and Discussions

QuestionGauge Control Pin
Member 156989896-Jul-22 8:08
MemberMember 156989896-Jul-22 8:08 
AnswerRe: Gauge Control Pin
Code Artist7-Jul-22 16:56
professionalCode Artist7-Jul-22 16:56 
QuestionLink não funciona Pin
Misael Soares1-Apr-22 8:44
MemberMisael Soares1-Apr-22 8:44 
AnswerRe: Link não funciona Pin
Code Artist1-Apr-22 22:40
professionalCode Artist1-Apr-22 22:40 
QuestionNice control Pin
Cabiblanco7-Feb-21 2:27
MemberCabiblanco7-Feb-21 2:27 
QuestionThe DLL will not add to my Pin
YorkshireCap29-Oct-20 6:22
MemberYorkshireCap29-Oct-20 6:22 
QuestionTrying to use your Agauge example as a wind direction dial but can't seem to get rid of the red arc. Also your links do not download. Pin
Member 136297721-Oct-19 2:50
MemberMember 136297721-Oct-19 2:50 
PraiseVery nice custom control Pin
mzbas26-Aug-19 9:31
Membermzbas26-Aug-19 9:31 
QuestionSource code not available Pin
dekortix8-Sep-18 23:13
Memberdekortix8-Sep-18 23:13 
QuestionDownload error Pin
Member 1184856213-Feb-18 9:05
MemberMember 1184856213-Feb-18 9:05 
Questiongauge doesnt display properly Pin
Member 130262962-Jan-18 18:02
MemberMember 130262962-Jan-18 18:02 
AnswerRe: gauge doesnt display properly Pin
Code Artist7-Jan-18 0:14
professionalCode Artist7-Jan-18 0:14 
GeneralRe: gauge doesnt display properly Pin
Member 130262968-Jan-18 16:32
MemberMember 130262968-Jan-18 16:32 
NewsLink available Pin
kfh3-Jun-17 12:01
Memberkfh3-Jun-17 12:01 
QuestionSource Link Pin
Mehmet Erol Çakır25-Apr-17 22:56
MemberMehmet Erol Çakır25-Apr-17 22:56 
BugSource link appears to be broken Pin
Leester3375-Apr-17 19:06
MemberLeester3375-Apr-17 19:06 
QuestionIf only... Pin
Member 130395905-Mar-17 8:38
MemberMember 130395905-Mar-17 8:38 
QuestionGaugeLabels - Example Pin
Member 1260459813-Oct-16 12:40
MemberMember 1260459813-Oct-16 12:40 
GeneralMy vote of 5 Pin
Member 1198694816-Jan-16 2:09
MemberMember 1198694816-Jan-16 2:09 
QuestionGaugeRanges Pin
mreza805-Oct-15 22:49
Membermreza805-Oct-15 22:49 
QuestionCreate Linear Gauges Pin
smsheethal26-Aug-15 2:49
professionalsmsheethal26-Aug-15 2:49 
AnswerRe: Create Linear Gauges Pin
Code Artist1-Sep-15 3:15
professionalCode Artist1-Sep-15 3:15 
QuestionUsing the Gauge Pin
Paul Hartland22-Mar-15 6:53
MemberPaul Hartland22-Mar-15 6:53 
Questionscale the gauge Pin
dxtr morgan27-Jan-15 7:45
Memberdxtr morgan27-Jan-15 7:45 
AnswerRe: scale the gauge Pin
Code Artist28-Jan-15 2:25
professionalCode Artist28-Jan-15 2:25 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.