c#如何将光标放在richtextbox中的位置

Question

我在 WinForms 中有一个丰富的文本框，并创建了一个复制和粘贴功能，我可以在光标处复制和粘贴。但是，一旦粘贴了我的光标就会移动到富文本框的开头。如何让它保持在该位置或移动到粘贴部分的末尾？

我试过了

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 中的光标位置。

    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();
        }
    }