query: object reference not set to an instance of object
positive_passages.docid: 289
positive_passages.text: What is a NullReferenceException, and how do I fix it?
negative_passages.docid: 134010
negative_passages.text: Can Visual Studio tell me which reference threw a NullReferenceException?
negative_passages.docid: 132062
negative_passages.text: Reference undefined
negative_passages.docid: 37832
negative_passages.text: The method clone() from object is not visible?
negative_passages.docid: 103911
negative_passages.text: Cross Reference problem
negative_passages.docid: 154262
negative_passages.text: List has no rows for assignment to SObject
negative_passages.docid: 84144
negative_passages.text: 'Operation is not valid due to the current state of the object' error during postback
negative_passages.docid: 125400
negative_passages.text: copy object as a reference
negative_passages.docid: 27377
negative_passages.text: property not working with getter AND setter
negative_passages.docid: 35590
negative_passages.text: How to fix NullPointerException in Java?
negative_passages.docid: 3868
negative_passages.text: Why use the 'ref' keyword when passing an object?
negative_passages.docid: 7935
negative_passages.text: CS0120: An object reference is required for the nonstatic field, method, or property 'foo'
negative_passages.docid: 127363
negative_passages.text: WPF, 'Object reference not set to an instance of an object' in Designer
negative_passages.docid: 3138
negative_passages.text: Set object property using reflection
negative_passages.docid: 11458
negative_passages.text: NullReferenceException in Unity
negative_passages.docid: 34819
negative_passages.text: What is the difference between an Instance and an Object?
negative_passages.docid: 1087
negative_passages.text: The calling thread cannot access this object because a different thread owns it