CODEWITHSUNDEEP
c#colorstextboxformattingrichtextbox
Michael Naidis
Michael Naidis

Reputation: 124

Making specific text bold in a string in C# Windows Forms

I want to make part of the text bold in a textbox, for example the textbox contains.

"This is a text box"

So it will be "This is a text box"

How can I do it in C# Windows Forms?

Upvotes: 2

Views: 15664

Answers (3)

pooja_baraskar
pooja_baraskar

Reputation: 171

You can do this with the help of FontStyle interface. Just add a button in your form and name it Bold and create a click event for that. You have to use RichTextBox for this, you cannot do this with TextBox. This code will convert the selected text to bold.

private void btnBold_Click(object sender, EventArgs e)
    {
        FontStyle style = tbMessage.SelectionFont.Style;
        if (tbMessage.SelectionFont.Bold)
        {
            style = style & ~FontStyle.Bold;
            btnBold.Font = new Font(btnBold.Font, FontStyle.Regular);
        }
        else
        {
            style = style | FontStyle.Bold;
            btnBold.Font = new Font(btnBold.Font, FontStyle.Bold);
        }
        tbMessage.SelectionFont = new Font(tbMessage.SelectionFont, style);
        tbMessage.Focus();

    }

Upvotes: 1

Olivier Jacot-Descombes
Olivier Jacot-Descombes

Reputation: 112259

To be clear, you cannot do that in a TextBox. Use a RichTextBox.

In a RichTextBox, start by selecting the desired text by setting the SelectionStart and the SelectionLength properties or let the user select text interactively. Then apply a formatting by setting one of the Selection... properties:

richTextBox1.Text = "This is a text box";
richTextBox1.SelectionStart = 5;
richTextBox1.SelectionLength = 2;
richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont, FontStyle.Bold);

Upvotes: 0

PhillipH
PhillipH

Reputation: 6202

You cannot do it in a standard TextBox control, you need to use a RichTextBox control with appropriate formatting.

Upvotes: 0

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