Different font size when item from combo box is selected in C#

Question

在我的组合框中，我有8,9,10和11项，因此当我选择8 9 10或11时我想设置不同的字体大小，有人可以指导我如何从组合框中选择项时设置不同的字体大小吗？

Answer 1

You can register a SelectedIndexChanged handler at your ComboBox:

private void cmbSize_SelectedIndexChanged(object sender, EventArgs e)
{
    float size = Convert.ToSingle(((ComboBox)sender).Text);

    richTextBox1.Font = new Font(richTextBox1.Font.FontFamily, size);
}

This will set the font size of the RichtTextBox (assuming its name is richTextBox1 )