Most surgeons recommend not eating or drinking most fluids for eight to 12 hours prior to surgery. You can usually drink clear liquids like water, apple juice, or chicken broth, but should stop drinking anything four hours beforehand.
An object reference is required for the nonstatic field, method, or property 'member'. In order to use a non-static field, method, or property, you must first create an object instance. For more information about static methods, see Static Classes and Static Class Members (C# Programming Guide) . For more information about creating instances of classes, see Instance Constructors (C# Programming Guide) .
In case of a static method call, the 'this' reference is not passed as static methods belong to a class and hence do not have the 'this' reference. A static method belongs to the class and a non-static method belongs to an object of a class. That is, a non-static method can only be called on an object of a class that it belongs to. A static method can however be called both on the class as well as an object of the class. A static method can access only static members.