A set of technologies in .NET for building web applications and web services. Miscellaneous topics that do not fit into specific categories.
Probably there is no such feature. But you can let Visual Studio to automatically wrap the lines: go to menu, TOOLS, Options, Text Editor, ASP.NET Web Forms, General, and uncheck “Enable virtual space” and check “Word wrap”. (This can be done for HTML, XAML and XML too). Then the long attribute values will be displayed by Visual Studio on multiple lines.