How to rotate a label by keeping autosize in C# windows forms

Question

0.00/5 (No votes)

See more:

Hi,
I want to rotate a label by button click
I found this code
here is a newLabel class

C#

class newLabel : System.Windows.Forms.Label
    {
        public int RotateAngle { get; set; }
        public string NewText { get; set; }
        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
        {
            Brush b = new SolidBrush(this.ForeColor);
            e.Graphics.TranslateTransform(this.Width / 2, this.Height / 2);
            e.Graphics.RotateTransform(this.RotateAngle);
            e.Graphics.DrawString(this.NewText, this.Font, b, 0f, 0f);
            base.OnPaint(e);
        }
    }

and that's use of label

C#

newlbl.AutoSize = false;
newlbl.NewText = "Heba<b";
newlbl.ForeColor = Color.Green;

my problem is

C#

newlbl.AutoSize = false;

I want To make autoSize = true but when make it the label disappear from a Form
and I can't resize label Font because it doesn't appear completely because it has a fixed height and width
any help ?

What I have tried:

I tried the code I submitted above

Posted 31-May-16 3:45am

Heba Kamel

Updated 31-May-16 4:19am

Add a Solution

Comments

Philippe Mori 1-Jun-16 7:19am

Would embedding a WPF control help? At least, it is easier to do rotation in WPF...

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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

OriginalGriff · Answer 1 · 2016-05-31T04:19:00

When you use AutoSize, it assumes a horizontal orientation - and autosizes on that basis. It then Paints the control text using the size and horizontal text. But since you have applied a rotate / transform to the graphics object it will draw with, it erases your text, and draws it's own - at an angle which means it is no longer visible within the bounds of the actual control.

If you want an autosize, rotatable control, you are going to have to dump Label completely and create your own alternative based on a UserControl, and handle it all yourself, via MeasureString. Do note that the size of the control will have to change as the rotation does, as the control is rectangular:

 ____
|1234|
 ----

is around 25 pixel high, by 75 wide:

 _
|4|
|3|
|2|
|1|
 -

Is probably about 75 pixels high, by 30 or so wide (especially is the characters are rotated though 90 degrees as well)

Santosh Kokatnur · Answer 2 · 2016-05-31T04:12:00

Create a class

newLable

which can rotate it's Text on any angle specified by you.

You can use it by code or simply dragging from ToolBox

C#

using System.Drawing;

class newLabel:System.Windows.Forms.Label
{
    public int RotateAngle { get; set; }  // to rotate your text
    public string NewText { get; set; }   // to draw text
    protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)
    {
        Brush b =new SolidBrush(this.ForeColor);           
        e.Graphics.TranslateTransform(this.Width / 2, this.Height / 2);
        e.Graphics.RotateTransform(this.RotateAngle);
        e.Graphics.DrawString(this.NewText, this.Font,b , 0f, 0f);
        base.OnPaint(e);
    }
}

Now this custom control is used into your form.

You have to set below properties

C#

1. nwlbl.Text = ""; //which can be changed by NewText property 2. nwlbl.AutoSize = false; // adjust according to your text 3. nwlbl.NewText = "Hello"; // whatever you want to display 4. nwlbl.ForeColor = Color.Red; // color to display 5. nwlbl.RotateAngle = -90; //angle to rotate</pre>

How to rotate a label by keeping autosize in C# windows forms

2 solutions

Solution 3

Solution 2

Add your solution here

Preview 0