Is there a way to put the cursor at a specific location in a RichTextBox?

Question

Is there a way to put the cursor at a specific location in a RichTextBox?
The following code places the cursor at the start of a RichTextBox:
    RichTextBox RTbx
    RTbx.Focus();
    TextPointer tp = RTbx.CaretPosition;
    tp = tp.DocumentStart;
    RTbx.CaretPosition = tp;
Not sure how to place it at a specific location other than start and end.
The RichTextBox has contents.  At this point in the code, I do know the specific "word" in the contents, as well as the position (number of chars) where that word is located.  I just need to programmatically place the cursor at that location.
bhs67

Answer 1

Oh sorry, I see I missed something out my original reply.
I have markup:
<Grid>
<RichTextBox Name="rtb">
<FlowDocument>
<Paragraph >This is the first paragraph</Paragraph>
<Paragraph >TSecond paragraph is here</Paragraph>
</FlowDocument>
</RichTextBox>
</Grid>
Code - this is the window contentrendered event
private void Window_ContentRendered(object sender, EventArgs e)
rtb.Focus();
// TextPointer moveTo = rtb.CaretPosition.GetNextInsertionPosition(LogicalDirection.Forward);
TextPointer moveTo = rtb.CaretPosition.GetPositionAtOffset(9, LogicalDirection.Forward);
if (moveTo != null)
rtb.CaretPosition = moveTo;
I see the cursor between the t and he of the second "the".
Note that there are numerous other options such as the commented out line.
Hope that helps.
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