CODEWITHSUNDEEP
c#winformscheckboxrichtextbox
Andrei David
Andrei David

Reputation: 1

How to display text of Check Box on multiple lines automatically?

I made a quiz that stores the questions in a SQL database and display the question in a Rich Text Box and the answers in Check Boxes.

But sometimes the answer is too long and I need more space to show it. I thought that a multiline would help me, but I can't find a way to do it.

Thanks!

Upvotes: 0

Views: 3210

Answers (2)

Zohar Peled
Zohar Peled

Reputation: 82534

Winforms checkboxes have an AutoSize property that is set to true by default.*
If you set it to false, you can change the height of the checkbox and it's text would wrap automatically.
However, if the AutoSize property is set to false, you must to set the width and height of checkbox yourself.

*As TaW mentioned in his comment, the AutoSize property's default is true only when adding the checkbox in the designer. For dynamically created checkboxes the default is false.

Upvotes: 1

MrApnea
MrApnea

Reputation: 1946

If you set the width of the checkbox you will automatically get multiline. I made a simple example of how to set the width of the control (if you want the width set hard) and then just adapting the height. Its better to set the height correct or the text might be clipped.

Try this:

    private void CreateCheckBox(){
        CheckBox cb = new CheckBox();
        cb.Location = new Point(10, 10);
        cb.Width = 150;
        Controls.Add(cb);
        cb.Text = "This is a long text that needs to be broken down into multiple lines.";
        cb.Height = GetHeight(cb);
    }

    private static int GetHeight(CheckBox cb) {
        using (Graphics g = cb.CreateGraphics()) {
            var size = g.MeasureString(cb.Text, cb.Font);
            int rows = (int)Math.Ceiling(((double) size.Width/cb.Width));
            return (int)(rows*size.Height);
        }
    }

Upvotes: 0

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