Click here to Skip to main content
Click here to Skip to main content
Technical Blog

Tagged as

(untagged)

MSChart Extension - Zoom and Pan Controls

, 30 Apr 2012 MIT
Rate this:
Please Sign up or sign in to vote.
Introduction - About MSChart ExtensionMSChart Extension is an extension package created to provide additional features and functions to Microsoft Chart (MSChart) control. This control is released under MIT license.Download MSChart Extension (Source and Assembly) Download MSChart Extens

Introduction - About MSChart Extension

MSChart Extension is an extension package created to provide additional features and functions to Microsoft Chart (MSChart) control. This control is released under MIT license.

Also available in NuGet and GitHub.
GitHub: https://github.com/Code-Artist/MSChartExtension

Background

Microsoft Chart (MSChart) in Visual Studio is a great Windows Forms (WinForms) controls to create chart for standalone application. However, there are several features that could be added and improved to make this controls more user friendly.

Zooming and panning are two common feature for chart when dealing with large amount of data. Unfortunately, there are no easy way to have these two features enabled with MSChart. Although there is a built in Zoom controls, it is not very user friendly which described below. On the other hand, panning is not available. Search around web but didn't find any reliable solutions.

I tried to implement these two features in MSChart by writing custom codes and YES it is possible. Instead of copy and paste the same piece of code over and over again to every single project that I need, I created this MSChart Extension class which put all these additional features in a separated assembly which can be simply add as reference when needed.

Features List

  • Fast Clear Data
  • Windowed Zoom in and Zoom Out
  • Pan
  • Show / hide series 

Fast Clear Data
MSChart has a known problem which impact most of the users which is the speed of clearing data points. This become worst when dealing with large amount of data. Workaround for this solution had been published by Microsoft and users to fix this problem. See previous post: Speedup MSChart for more details.

    //Clear Data Points
    myChart.Series[0].ClearPoints();

Windowed Zoom
This is a improvement version of zoom control with zoom out (full view) instead of using built in zoom control in MSChart. The main reason for recreate this feature is because zooming out is really a pain where need to zoom out each axis separately by clicking a button on the axis by number of time that I zoomed in. Moreover, the built in controls does not seems to works well with annotations.

Notes: Zoom out function is available in pop up menu when chart is zoomed.

Pan
Panning allowed user to move zoomed window using mouse. This is much better than moving the horizontal and vertical scroll bar.

Show / Hide Series
Sometimes, it is necessary to plot chart with multiple series for data comparison. However, it would not be easy to visualize the data for each individual series when we have multiple series overlapping each other. Show and hide series function provide a flexibility to hide each series as you wish. MSChart extension will automatically detect number of series used in chart, no setup is required to use this feature. Each series can be hide / show from context menu.

Using MSChart Extension

To use this extension package, simply add MSChart assembly to reference of the project. Additional features and dedicated context menu can be enabled by the following function call.

    private void AttachChartControl()
    {
        //Enable Extension Functions and Context Menu
        myChart.EnableZoomAndPanControls(ChartCursorSelected, ChartCursorMoved);
    }
        
    private void ChartCursorSelected(double x, double y)
    {
        txtChartSelect.Text = x.ToString("F4") + ", " + y.ToString("F4");
    }
    private void ChartCursorMoved(double x, double y)
    {
        txtChartValue.Text = x.ToString("F4") + ", " + y.ToString("F4");
    }

ChartCursorSelected and ChartCursorMoved are two optional callback to notify parent when chart coordinate changed. ChartCursorSelected will be called when a point in chart area is selected whereas ChartCursorMoved will trigger when mouse is move in chart area. x and y values in these two call backs are values for X-Axis and Y-Axis. It is hard coded to use primary axis at this moment.

This operation is reversible by calling the following function.

    //Disable Extension Functions and restore chart settings
    myChart.DisableZoomAndPanControls();

MSChart Extension come with a built in pop up menu which allow user to use features such as zoom and pan controls during run-time. All functions such as zoom, pan, select and series hide / show can be access from context menu. This context menu is shown when right click mouse in chart with Zoom and Pan controls enabled as show above.

Future Improvement

  • Add option to select between primary / secondary axis for Select tool and callback functions.
  • Append MSChart Extension's context menu to user defined context menu if exists.
  • Implement 2 cursor to calculate different between 2 points. 

Version History

02/04/2012    Original document.
03/04/2012    Reformat.
04/04/2012    Added description to call back functions and future improvement list.
24/04/2012    Published as NuGet Package

License

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

Share

About the Author

Code Artist
Software Developer (Senior)
Malaysia Malaysia

Comments and Discussions

 
QuestionAdding scroll bar option.. PinmemberLoving rascal24-Feb-13 18:19 
AnswerRe: Adding scroll bar option.. PinmemberCode Artist24-Feb-13 21:43 

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

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

| Advertise | Privacy | Mobile
Web04 | 2.8.141015.1 | Last Updated 30 Apr 2012
Article Copyright 2012 by Code Artist
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid