C# RichTextBox 颜色选择行

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时间:2020-08-04 09:03:32  来源:igfitidea点击:

RichTextBox color selected lines

c#.netwinformsrichtextbox

提问by Picflight

I am new to windows Forms. I am using VS 2008, C# to write a RichTextBox. I want to be able to color each line with a different color as I write to the RichTextBox. Can someone point me to samples. Thanks

我是 Windows 窗体的新手。我正在使用 VS 2008、C# 编写 RichTextBox。当我写入 RichTextBox 时,我希望能够用不同的颜色为每一行着色。有人可以指点我样品。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
  }

}

采纳答案by Daniel LeCheminant

Set SelectionColorbefore you append, something like:

SelectionColor在追加之前设置,例如:

    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++;
    }