Created Issue: Full reparse when typing C# code before markup [316]

When typing a new C# statement inside a Razor block immediately before embedded markup, the parser immediately considers all text from the start of the new statement to the nearest ";" as code. This means embedded markup in this range will be reclassified as code, causing incorrect colorization

This also means a full reparse occurs, which can slow down typing performance.

Identified by WebMatrix Editor team. Created from WebMatrix Bug# 37123