Data not saving permanently to SQL table

Question

I am using C# for a WPF application in Visual Studio Express 2012. I followed the tutorial found here. I created a testDb.mdf local Service-based database. I

Answer 1

Well, i found the solution. I solved it by installing SSDT(SQL server data tools) for visual studio. Install it according to your visual studio version. Go to following link to download the SSDT for visual studio. https://msdn.microsoft.com/en-us/mt186501