{
rtb.HideSelection = false;
int searchStartPosition = rtb.SelectionStart;
if (rtb.SelectedText.Length > 0)
{
searchStartPosition = rtb.SelectionStart + rtb.SelectedText.Length;
}
int indexOfText = rtb.Find(text, searchStartPosition, RichTextBoxFinds.None);
if (indexOfText >= 0)
{
searchStartPosition = indexOfText + rtb.SelectionLength;
rtb.Select(indexOfText, rtb.SelectionLength);
}
else
{
MessageBox.Show(String.Format("找不到“{0}”...", text));
}
}
然後妳用壹個子窗體回調這個方法就行了