Substract Flag From FontStyle (Toggling FontStyles) [C#]

Question

I have a little problem. I have one 1 RichTextBox and 2 Buttons.

I have that 2 buttons for \"toggle Bold FStyle\" and \"toggle Italic FStyle\".

I want to tog

Answer 1

The easiest way is to use bitwise XOR (^), which just toggles the value:

private void button1_Click(object sender, EventArgs e)
{
    richTextBox1.SelectionFont = new Font(richTextBox1.Font,
        richTextBox1.SelectionFont.Style ^ FontStyle.Bold);
}

private void button2_Click(object sender, EventArgs e)
{
    richTextBox1.SelectionFont = new Font(richTextBox1.Font,
        richTextBox1.SelectionFont.Style ^ FontStyle.Italic);
}