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C# Line Control with Rotate Option

, 14 May 2007
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An article on line control in .NET

Screenshot - bitLineControlSnap.jpg

Introduction

I decided to write this line control in C# when I was unable to find a suitable solution on the Internet. My scenario was to draw straight and curved lines to highlight pathways to a destination. Here, the line region is automatically controlled in the bitLineControl class.

Using the code

Using the code is not difficult; you just have to add the reference bitLineControl in your project. Declare and initialize the class variable and, while calling the constructor, just pass two points to draw a line between them:

//--------------------------------------------------------------------------
//  Variable Declaration
//--------------------------------------------------------------------------
    bitLineControl varbitLine;
    
//--------------------------------------------------------------------------
//  calling the constructor
//--------------------------------------------------------------------------
    Point firstPoint = new Point( x1, y1);
    Point secondPoint = new Point(x2, y2 );
    varbitLine = new bitLineControl(firstPoint, secondPoint);
    this.Controls.Add(varbitLine);
//--------------------------------------------------------------------------

You can also rotate the line by calling the rotateByAngle(angle) method of the class. For example, the following code will rotate the line 10 degrees from its current location:

varbitLine.rotateByAngle(10);

You can also supply a negative value to rotate it back.

Points of interest

The main problem faced here was setting the region for the line control. Because it can be a rotated line or the user can rotate the line whenever required, the coordinates can go into the negative when rotated.

History

  • May 14, 2007 - Original version posted

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

About the Author

mamirbalouch
Software Developer (Senior) Business Intelligence Technologies 360
Pakistan Pakistan
I have a Masters Degree in Information Technology, supported by a Bachelors Degree in Information Technology. I am working as a software developer for five years. I have a good experience in developing business applications including Accounting, Payroll, Inventory and Student Information systems. I have also developed an application name Virtual Reception. Which is a Artificial Intelligence based, interactive application.

Comments and Discussions

 
Questionrotate a complete 360 degrees Pinmemberjeff gonzales29-Oct-12 7:37 
GeneralMy vote of 5 Pinmembermanoj kumar choubey22-Feb-12 0:12 
QuestionRotate around one point Pinmemberkingofkings202914-Sep-11 22:32 
GeneralThank you! PinmemberOrlament23-Jan-11 20:39 
GeneralGreat Stuff! 2 Questions PinmemberDerek Leuridan9-Aug-10 20:13 
GeneralQuestion PinmemberJason Tepe17-Apr-08 9:45 
GeneralRe: Question Pinmembermamirbalouch23-Apr-08 21:22 
QuestionC# Line Control with Rotate option Pinmemberdenson22-May-07 8:44 
AnswerRe: C# Line Control with Rotate option Pinmembermamirbalouch23-May-07 4:57 
QuestionRe: C# Line Control with Rotate option Pinmemberdenson23-May-07 6:57 
AnswerRe: C# Line Control with Rotate option Pinmembermamirbalouch24-May-07 21:14 

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