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C#

C# static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C# code

  • All rules 493
  • Vulnerability46
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  • Security Hotspot24
  • Code Smell335

  • Quick Fix 61
Filtered: 6 rules found
unpredictable
    Impact
      Clean code attribute
        1. "Thread.Resume" and "Thread.Suspend" should not be used

           Bug
        2. "Assembly.Load" should be used

           Code Smell
        3. "SafeHandle.DangerousGetHandle" should not be called

           Bug
        4. Mutable fields should not be "public static"

           Code Smell
        5. Culture should be specified for "string" operations

           Code Smell
        6. "GC.Collect" should not be called

           Code Smell

        Mutable fields should not be "public static"

        consistency - conventional
        maintainability
        Code Smell
        • cwe
        • unpredictable

        Why is this an issue?

        More Info

        public static mutable fields of classes which are accessed directly should be protected to the degree possible. This can be done by reducing the accessibility of the field or by changing the return type to an immutable type.

        This rule raises issues for public static fields with a type inheriting/implementing System.Array or System.Collections.Generic.ICollection<T>.

        Noncompliant code example

        public class A
        {
            public static string[] strings1 = {"first","second"};  // Noncompliant
            public static List<String> strings3 = new List<String>();  // Noncompliant
        }
        

        Compliant solution

        public class A
        {
            protected static string[] strings1 = {"first","second"};
            protected static List<String> strings3 = new List<String>();
        }
        

        Exceptions

        No issue is reported:

        • If the type of the field inherits/implements one (at least) of the following types:
          • System.Collections.ObjectModel.ReadOnlyCollection<T>
          • System.Collections.ObjectModel.ReadOnlyDictionary<TKey, TValue>
          • System.Collections.Frozen.FrozenDictionary<TKey, TValue>
          • System.Collections.Frozen.FrozenSet<T>
          • System.Collections.Immutable.ImmutableArray<T>
          • System.Collections.Immutable.IImmutableDictionary<TKey, TValue>
          • System.Collections.Immutable.IImmutableList<T>
          • System.Collections.Immutable.IImmutableSet<T>
          • System.Collections.Immutable.IImmutableStack<T>
          • System.Collections.Immutable.IImmutableQueue<T>
        • If the field is readonly and is initialized inline with an immutable type (i.e. inherits/implements one of the types in the previous list) or null.
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