c# - RichTextBox 颜色选中的行

Question

我是 Windows 窗体的新手。我正在使用 VS 2008，C# 编写一个 RichTextBox。 我希望能够在写入 RichTextBox 时用不同的颜色为每一行着色。有人可以指点我 sample 吗？ 谢谢

foreach (string file in myfiles)
{
  // As I process my files
  // richTextBox1.Text += "My processing results";
  if(file == "somefileName")
  {
    // Color above entered line or enter new colored line
  }

}

Answer 1

在追加之前设置SelectionColor，类似于:

    int line = 0;
    foreach (string file in myfiles)
    {
        // Whatever method you want to choose a color, here
        // I'm just alternating between red and blue
        richTextBox1.SelectionColor = 
            line % 2 == 0 ? Color.Red : Color.Blue;

        // AppendText is better than rtb.Text += ...
        richTextBox1.AppendText(file + "\r\n");
        line++;
    }