During modification got Index out of bound exception.

[swanandb2]

I did try to refer code from https://github.com/robinrodricks/ScintillaNET.Demo and display XML. It shows XML in text area, I saw following two problem.

1. When I try to change something in text area, it throws index out of bound exception.

Exception.log

2. XML folding is not working like notepad++, I have use XML lexer, rest of code is same like in sample application. Kindly let me know if any information is require.