- [CanBeNull] public object Test() { return null; }
- public void UseTest() {
- var p = Test();
- var s = p.ToString(); // Warning: Possible 'System.NullReferenceException'
- }
-
- [NotNull] public object Foo() {
- return null; // Warning: Possible 'null' assignment
- }
-
- [StringFormatMethod("message")]
- public void ShowError(string message, params object[] args) { /* do something */ }
- public void Foo() {
- ShowError("Failed: {0}"); // Warning: Non-existing argument in format string
- }
-
- public void Foo(string param) {
- if (param == null)
- throw new ArgumentNullException("par"); // Warning: Cannot resolve symbol
- }
-
- public class Foo : INotifyPropertyChanged {
- public event PropertyChangedEventHandler PropertyChanged;
- [NotifyPropertyChangedInvocator]
- protected virtual void NotifyChanged(string propertyName) { ... }
-
- private string _name;
- public string Name {
- get { return _name; }
- set { _name = value; NotifyChanged("LastName"); /* Warning */ }
- }
- }
-
- Examples of generated notifications:
- Function Definition Table syntax:
-
- [ContractAnnotation("=> halt")]
- public void TerminationMethod()
-
- [ContractAnnotation("halt <= condition: false")]
- public void Assert(bool condition, string text) // regular assertion method
-
- [ContractAnnotation("s:null => true")]
- public bool IsNullOrEmpty(string s) // string.IsNullOrEmpty()
-
- // A method that returns null if the parameter is null, and not null if the parameter is not null
- [ContractAnnotation("null => null; notnull => notnull")]
- public object Transform(object data)
-
- [ContractAnnotation("s:null=>false; =>true,result:notnull; =>false, result:null")]
- public bool TryParse(string s, out Person result)
-
- [LocalizationRequiredAttribute(true)]
- public class Foo {
- private string str = "my string"; // Warning: Localizable string
- }
-
- [CannotApplyEqualityOperator]
- class NoEquality { }
- class UsesNoEquality {
- public void Test() {
- var ca1 = new NoEquality();
- var ca2 = new NoEquality();
- if (ca1 != null) { // OK
- bool condition = ca1 == ca2; // Warning
- }
- }
- }
-
- [BaseTypeRequired(typeof(IComponent)] // Specify requirement
- public class ComponentAttribute : Attribute { }
- [Component] // ComponentAttribute requires implementing IComponent interface
- public class MyComponent : IComponent { }
-
- [Pure] private int Multiply(int x, int y) { return x * y; }
- public void Foo() {
- const int a = 2, b = 2;
- Multiply(a, b); // Waring: Return value of pure method is not used
- }
-
- [ActionName("Foo")]
- public ActionResult Login(string returnUrl) {
- ViewBag.ReturnUrl = Url.Action("Foo"); // OK
- return RedirectToAction("Bar"); // Error: Cannot resolve action
- }
- GeometryEffect="Sketch".
+ Creates a clone of the instance of the geometry effect so it can be used as a resource.
+