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JavaScriptSerializer Constructor (JavaScriptTypeResolver)

Initializes a new instance of the JavaScriptSerializer class that has a custom type resolver.

Namespace:  System.Web.Script.Serialization
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

new : 
        resolver:JavaScriptTypeResolver -> JavaScriptSerializer

Parameters

resolver
Type: System.Web.Script.Serialization.JavaScriptTypeResolver

The custom type-resolver object.

When it is serializing an object, the JavaScriptSerializer class uses the resolver parameter to determine the appropriate value to include in the serialized JSON string for the type metadata property ("__type"). Similarly, when the JavaScriptSerializer class is deserializing a JSON string, it resolves the type metadata property value to the appropriate managed type by using the resolver instance.

You can set the resolver parameter to a null reference (Nothing in Visual Basic), which is equivalent to calling the JavaScriptSerializer constructor.

The instance of JavaScriptSerializer that is used by the asynchronous communication layer for invoking Web services from client script uses a special type resolver. This type resolver restricts the types that can be deserialized to those defined in the Web service’s method signature, or the ones that have the GenerateScriptTypeAttribute applied. You cannot modify this built-in type resolver programmatically.

Security noteSecurity Note

Using an instance of this object initialized with a custom type-resolver can present a security risk. Use this object only with trusted data. For more information, see Untrusted Data Security Risks.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5 SP1
Obsolete (compiler warning) in 3.5
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