WPF Type initialization Exception in C#

Question

I have someone else\'s WPF-based .NET 3.5 app that I\'m attempting to update to .NET 4.5. The code ran fine under .NET 3.5, and I\'m running Visual Studio 2013 Express on Wi

Answer 1

Check the spellings of connectionStrings,connectionString="" if used! 'S' should be capital ..XML is case sensitive :)