I have a RichTextBox in a WInForms program that is wrapping any line that is longer than 3,510 characters. I have WordWrap set to false, so all lines under that length extend normally without wrapping. What I used to do to get around this was to set RightMargin to a high number such as 100,000, which still works, but now that I am on Windows 7 and not XP, I get a scroll bar that scrolls as though the text box had lines of that large length, when it doesn't.
To replicate, just create a winforms program with a RichTextBox and Button. In the button's click event, put the following:
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 3511; i++)
sb.Append('A');
richTextBox1.Text = sb.ToString();
After you see the wrapping, change the RightMargin of the text box to 100000, and notice the scrollbar that appears even before running the program (only on 7 and probably Vista). The line no longer wraps, but I want the scrollbar to only act on the text in the box, and not some pre-determined length.
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