Gets or sets a value that indicates whether all return types are serialized as XML, which includes string types.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
When this property is set to false, all return types are serialized as XML, except string, which is interpreted as XML markup. If the value is false, and if the return type is a string, and if the string does not contain XML markup that corresponds to a well-formed XML document, the succeeded callback function will be invoked but the resulting serialized string will be null.
The value of is ignored when the ResponseFormat property is set to Json.
The following example shows how to apply ScriptMethodAttribute to a Web method with the property set to true. This code example is part of a larger example provided for the ScriptMethodAttribute class.