C＃如何将光标放在richtextbox中的位置

Question

我在WinForms中有一个richtextbox，并创建了复制和粘贴功能，并且可以在光标处复制和粘贴。 但是，一旦粘贴，我的光标就会移动到richtextbox的开头。 如何使其保持在原位置或移至粘贴部分的末尾？

我努力了

Point p = new Point(Cursor.Position.X, Cursor.Position.Y);
rtbNotePad.PointToClient(p); //but does not work.

private void copyToolStripMenuItem_Click(object sender, EventArgs e)
{
    rtbNotePad.Copy();
}

private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
{
    string pasteText = Clipboard.GetText(TextDataFormat.Text).ToString();
    Point p = new Point(Cursor.Position.X, Cursor.Position.Y);

    if (Clipboard.ContainsText())
    {
        rtbNotePad.Text = rtbNotePad.Text.Insert(rtbNotePad.SelectionStart, Clipboard.GetText(TextDataFormat.Text).ToString());
        rtbNotePad.PointToClient(p);
    }
}

Answer 1

您应该使用SelectionStart属性来控制ReachtextBox的光标位置。

    private void pasteToolStripMenuItem_Click(object sender, EventArgs e)
    {
        string pasteText = Clipboard.GetText(TextDataFormat.Text).ToString();

        if (Clipboard.ContainsText())
        {
            var start = rtbNotePad.SelectionStart; // use this if you want to keep cursor where it was
            //start += pasteText.Length;    // use this if want to move cursor to the end of pasted text
            rtbNotePad.Text = rtbNotePad.Text.Insert(rtbNotePad.SelectionStart, Clipboard.GetText(TextDataFormat.Text).ToString());

            rtbNotePad.SelectionStart = start;
           // rtbNotePad.Focus();
        }
    }