If the app have a simple UI, you could consider the possibility of doing it cross-platform through Xamarin.Forms, since you have C# skills. solved Windows CE apps update to Windows Mobile or switch to another platform?
You forgot to open the connection. string connString = “Data Source=\”\\My Documents\\HHSDB003.sdf\””; string query = “SELECT * FROM MyTable”; SqlCeConnection conn = new SqlCeConnection(connString); SqlCeCommand cmd = new SqlCeCommand(query, conn); conn.Open(); // <— THIS SqlCeDataReader rdr = cmd.ExecuteReader(); try { // Iterate through the results while (rdr.Read()) { } } finally { // Always call … Read more