由网友(拜你所赐)分享简介：如何删除文本的特定行一个RichTextBox？How can I delete a specific line of text in a RichTextBox ?推荐答案另一种解决方案：private void DeleteLine(int a_line){int start_index = richTe...

如何删除文本的特定行一个RichTextBox？

How can I delete a specific line of text in a RichTextBox ?

推荐答案

另一种解决方案：

private void DeleteLine(int a_line)
{
    int start_index = richTextBox.GetFirstCharIndexFromLine(a_line);
    int count = richTextBox.Lines[a_line].Length;

    // Eat new line chars
    if (a_line < richTextBox.Lines.Length - 1)
    {
        count += richTextBox.GetFirstCharIndexFromLine(a_line + 1) -
            ((start_index + count - 1) + 1);
    }

    richTextBox.Text = richTextBox.Text.Remove(start_index, count);
}