怎样指定richTextBox中某些字的颜色？

Question

this.richTextBox1.Select(1,5);
this.richTextBox1.SelectionColor=Color.Red;将1到5个字符改为红色

Answer 1

private void ToggleBold()
{
   if (richTextBox1.SelectionFont != null)
   {
      System.Drawing.Font currentFont = richTextBox1.SelectionFont;
      System.Drawing.FontStyle newFontStyle;      if (richTextBox1.SelectionFont.Bold == true)
      {
         newFontStyle = FontStyle.Regular;
      }
      else
      {
         newFontStyle = FontStyle.Bold;
      }      richTextBox1.SelectionFont = new Font(
         currentFont.FontFamily, 
         currentFont.Size, 
         newFontStyle
      );
   }
}修改字体