Object reference not set to an instance of an object changing connection string in app.config from code
289
What is a NullReferenceException, and how do I fix it?
44561
How to reference non-static variable name from static context?
117611
Android Context.bindService always returns false and ServiceConnection object is never triggered
81069
How to get ObjectContext to compile?
66307
A field initializer cannot reference the nonstatic field, method, or property
100863
How to create custom config section in app.config?
48235
Setting Objects to Null/Nothing after use in .NET
78680
How to securely store a connection string in a WinForms application?
87728
ArgumentNullException or NullReferenceException from extension method?
102124
Change default app.config at runtime
50046
java : non-static variable cannot be referenced from a static context Error
1605
What is the reason behind "non-static method cannot be referenced from a static context"?
121140
How to retrieve the databaseName and the serverName from the connectionstring in the webconfig?
79586
System.NullPointerException: Attempt to de-reference a null object
87042
Update/Create object properties dynamically
95347
User scope vs Application scope in app.config
138787
Change a web.config programmatically with C# (.NET)