C# RichTextBox跳转到指定行（文本行跳转和显示行跳转）

1 /// <summary>跳到指定行</summary>
2 private void JumpToLine(int lineIndex)
3 {
4     rtxContext.SelectionStart = rtxContext.GetFirstCharIndexFromLine(lineIndex);
5     rtxContext.SelectionLength = 0;
6     rtxContext.Focus();
7     rtxContext.ScrollToCaret();
8 }

 1 /// <summary>跳到指定行</summary>
 2 private void JumpToLine(int lineIndex)
 3 {
 4     var charindex= rtxContext.GetFirstCharIndexFromLine(lineIndex);//不需要也可以，那么对应的Find()参数为0，我处理的是比较大的文章，so...
 5     var strline = rtxContext.Lines[lineIndex];
 6     var viewindex = rtxContext.Find(strline, charindex, RichTextBoxFinds.None);
 7     rtxContext.SelectionStart = viewindex;
 8     rtxContext.SelectionLength = 0;
 9     rtxContext.Focus();
10     rtxContext.ScrollToCaret();
11 }