DataContractResolver Class
Provides a mechanism for dynamically mapping types to and from xsi:type representations during serialization and deserialization.
System.Runtime.Serialization.DataContractResolver
System.Data.Objects.ProxyDataContractResolver
Namespace: System.Runtime.Serialization
Assembly: System.Runtime.Serialization (in System.Runtime.Serialization.dll)
The DataContractResolver type exposes the following members.
| Name | Description | |
|---|---|---|
  | DataContractResolver | Initializes a new instance of the DataContractResolver class. |
| Name | Description | |
|---|---|---|
| Equals(Object) | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ResolveName | Override this method to map the specified xsi:type name and namespace to a data contract type during deserialization. |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| TryResolveType | Override this method to map a data contract type to an xsi:type name and namespace during serialization. |
Developers should be careful about what data is being sent over the wire. You can use transport or message security to secure that data. For more information, see see Security.
| Caution |
|---|
Only use DataContractResolver if you are completely sure of what information is being serialized. Malicious types can cause unexpected behavior. |
The following example shows how to derive a class from DataContractResolver. For a working sample, see DataContractResolver.
class MyDataContractResolver : DataContractResolver { private Dictionary<string, XmlDictionaryString> dictionary = new Dictionary<string, XmlDictionaryString>(); Assembly assembly; // Definition of the DataContractResolver public MyDataContractResolver(Assembly assembly) { this.assembly = assembly; } // Used at deserialization // Allows users to map xsi:type name to any Type public override Type ResolveName(string typeName, string typeNamespace, Type declaredType, DataContractResolver knownTypeResolver) { XmlDictionaryString tName; XmlDictionaryString tNamespace; if (dictionary.TryGetValue(typeName, out tName) && dictionary.TryGetValue(typeNamespace, out tNamespace)) { return this.assembly.GetType(tNamespace.Value + "." + tName.Value); } else { return null; } } // Used at serialization // Maps any Type to a new xsi:type representation public override bool TryResolveType(Type type, Type declaredType, DataContractResolver knownTypeResolver, out XmlDictionaryString typeName, out XmlDictionaryString typeNamespace) { string name = type.Name; string namesp = type.Namespace; typeName = new XmlDictionaryString(XmlDictionary.Empty, name, 0); typeNamespace = new XmlDictionaryString(XmlDictionary.Empty, namesp, 0); if (!dictionary.ContainsKey(type.Name)) { dictionary.Add(name, typeName); } if (!dictionary.ContainsKey(type.Namespace)) { dictionary.Add(namesp, typeNamespace); } return true; } }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
