How can I scroll to a specified line in a WinForms TextBox using C#?

Question

How can I scroll to a specified line in a WinForms TextBox using C#?

Thanks

Answer 1

Here's how you scroll to the selection:

textBox.ScrollToCaret();

To scroll to a specified line, you could loop through the TextBox.Lines property, total their lengths to find the start of the specified line and then set TextBox.SelectionStart to position the caret.

Something along the lines of this (untested code):

int position = 0;

for (int i = 0; i < lineToGoto; i++)
{
    position += textBox.Lines[i].Length;
}

textBox.SelectionStart = position;

textBox.ScrollToCaret();