NullReferenceException at SqlConnection conn = new
289
What is a NullReferenceException, and how do I fix it?
131183
should a db connection be a singleton?
144658
System.NullPointerException: Attempt to de-reference a null object ,sravn
20892
C# nullable string error
22992
How to specify null value in MS Access through the JDBC-ODBC bridge?
72009
How to Prevent the System.QueryException
120314
SQLException: No suitable driver found
140940
java.sql.SQLException: No data found
107423
After ExecuteScalar: Object reference not set etc
114816
Is null reference possible?
149666
Why can't a null-reference exception name the object that has a null reference?
131864
Member '' cannot be accessed with an instance reference
88920
Is using NULL references OK?
134010
Can Visual Studio tell me which reference threw a NullReferenceException?
96046
Static fields on a null reference in Java
109156
SqlException from Entity Framework - New transaction is not allowed because there are other threads running in the session
87728
ArgumentNullException or NullReferenceException from extension method?