mcs/class/System.Web.Mvc3/Mvc/BindAttribute.cs

   1 namespace System.Web.Mvc {
   2     using System;
   3     using System.Linq;
   4
   5     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Parameter, AllowMultiple = false, Inherited = true)]
   6     public sealed class BindAttribute : Attribute {
   7
   8         private string _exclude;
   9         private string[] _excludeSplit = new string[0];
  10         private string _include;
  11         private string[] _includeSplit = new string[0];
  12
  13         public string Exclude {
  14             get {
  15                 return _exclude ?? String.Empty;
  16             }
  17             set {
  18                 _exclude = value;
  19                 _excludeSplit = AuthorizeAttribute.SplitString(value);
  20             }
  21         }
  22
  23         public string Include {
  24             get {
  25                 return _include ?? String.Empty;
  26             }
  27             set {
  28                 _include = value;
  29                 _includeSplit = AuthorizeAttribute.SplitString(value);
  30             }
  31         }
  32
  33         public string Prefix {
  34             get;
  35             set;
  36         }
  37
  38         internal static bool IsPropertyAllowed(string propertyName, string[] includeProperties, string[] excludeProperties) {
  39             // We allow a property to be bound if its both in the include list AND not in the exclude list.
  40             // An empty include list implies all properties are allowed.
  41             // An empty exclude list implies no properties are disallowed.
  42             bool includeProperty = (includeProperties == null) || (includeProperties.Length == 0) || includeProperties.Contains(propertyName, StringComparer.OrdinalIgnoreCase);
  43             bool excludeProperty = (excludeProperties != null) && excludeProperties.Contains(propertyName, StringComparer.OrdinalIgnoreCase);
  44             return includeProperty && !excludeProperty;
  45         }
  46
  47         public bool IsPropertyAllowed(string propertyName) {
  48             return IsPropertyAllowed(propertyName, _includeSplit, _excludeSplit);
  49         }
  50     }
  51 }