Today I tried to start a sample program which contains a connection string like this:
const string connectionString = @”Data Source=.\SQLEXPRESS; AttachDbFilename=|DataDirectory|\SampleInstanceStore.mdf; Integrated Security=True;Asynchronous Processing=True”;
I got the following error message:
System.Data.SqlClient.SqlException: An attempt to attach an auto-named database for file C:\Users\Martin\Some more subfolders\SampleInstanceStore.mdf failed. A database with the […]
