query: Controller Error "An object Reference is required for the non-static field" is being thrown when trying to call interface Service
positive_passages.docid: 7935
positive_passages.text: CS0120: An object reference is required for the nonstatic field, method, or property 'foo'
negative_passages.docid: 2748
negative_passages.text: Lightning Locker Service and object fields at different levels
negative_passages.docid: 127599
negative_passages.text: Odd situation for "cannot reference this before supertype constructor has been called"
negative_passages.docid: 5082
negative_passages.text: How do I use reflection to call a generic method?
negative_passages.docid: 28797
negative_passages.text: "Unknown class  in Interface Builder file" error at runtime
negative_passages.docid: 85201
negative_passages.text: "Cannot create an instance of the abstract class or interface" C# error message
negative_passages.docid: 136629
negative_passages.text: "A namespace cannot directly contain members such as fields or methods"
negative_passages.docid: 53942
negative_passages.text: Why Doesn't C# Allow Static Methods to Implement an Interface?
negative_passages.docid: 3519
negative_passages.text: Ioc/DI - Why do I have to reference all layers/assemblies in application's entry point?
negative_passages.docid: 122276
negative_passages.text: Error: Unable to generate a temporary class (result=1) ... When Invoking Methods on a Web Service
negative_passages.docid: 127363
negative_passages.text: WPF, 'Object reference not set to an instance of an object' in Designer
negative_passages.docid: 109291
negative_passages.text: Expression of type 'System.Web.Mvc.MvcWebRazorHostFactory' cannot be used for return type 'System.Web.WebPages.Razor.WebRazorHostFactory'
negative_passages.docid: 61861
negative_passages.text: Extension methods must be defined in a non-generic static class
negative_passages.docid: 82090
negative_passages.text: Reference sObject Fields dynamically from a string value
negative_passages.docid: 118378
negative_passages.text: WCF Service Returning "Method Not Allowed"
negative_passages.docid: 22059
negative_passages.text: JSF Controller, Service and DAO
negative_passages.docid: 48022
negative_passages.text: Record passed from force:recordData to Apex controller method is null