JSON Parameter in VS .NET

Generator GS1 - 13 in VS .NET JSON Parameter
Listing 922 JSON Parameter
Create EAN13 In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create EAN-13 image in ASP.NET applications.
{"customer":{"__type":"CustomerEntity:#ServiceDataComplex", "FirstName":"Joe","LastName":"Dirt","Address":"1525 Faraday Suite 250","City":"Carlsbad","State":"CA","Zip":"92009"}}
Barcode Creator In VS .NET
Using Barcode printer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
Listing 923 SaveCustomer Contract
EAN13 Creator In .NET Framework
Using Barcode maker for .NET framework Control to generate, create UPC - 13 image in .NET framework applications.
[ServiceContract] public interface IComplexWCFService { [OperationContract] [CommunicationSupportJsonMessageClass( typeof(CustomerEntitySaveCustomer))] CustomerEntity SaveCustomer(CustomerEntity customer); }
Printing GS1 - 12 In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create UPC Symbol image in ASP.NET applications.
Listing 924 CustomerEntitySaveCustomer Type
Print EAN13 In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create EAN-13 image in ASP.NET applications.
[DataContract] public class CustomerEntitySaveCustomer { [DataMember] public CustomerEntity customer { get; set; } }
Painting USS Code 39 In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create Code 39 Full ASCII image in ASP.NET applications.
Custom Application Ser vice s
Paint Code 128 Code Set C In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create Code128 image in ASP.NET applications.
Listing 925 Parameter Assignment
Printing UCC.EAN - 128 In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create GTIN - 128 image in ASP.NET applications.
public static object[] AssignParameters(HttpContext context, Type messageBodyClassType, Dictionary<string, ParameterInfo> methodParms, Collection<Type> knownTypes) { DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(messageBodyClassType, knownTypes); object jsonMessageBodyClass = jsonSerializerReadObject( contextRequestInputStream); object[] assignedParms = new object[methodParmsCount]; int i= 0; ParameterInfo parmInfo; PropertyInfo propertyInfo; foreach (KeyValuePair<string, ParameterInfo> parmInfoDictionary in methodParms) { parmInfo = parmInfoDictionaryValue; propertyInfo = jsonMessageBodyClassGetType() GetProperty(parmInfoName); assignedParms[i] = propertyInfoGetValue(jsonMessageBodyClass, null); i++; } return assignedParms; }
Drawing Barcode In .NET
Using Barcode maker for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Processing Method Result
Drawing USPS OneCode Solution Barcode In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create USPS Intelligent Mail image in ASP.NET applications.
The challenges presented when serializing the data returned from the service method call are similar to the ones during deserialization The JSON format needed by the SysSerializationJavaScriptSerializer can t be created by the DataContractJsonSerializer (see Listing 926) The JSON emitted by the DataContractJsonSerializer does not contain any type information and is not in the correct format (see Listing 927) To create the correct JSON format, we need to construct the JSON using the combined functionality provided by the WriteJsonToResponseStream method and the DataContractSerializer The WriteJsonToResponseStream method, shown in Listing 928, builds up the JSON data by rst serializing the returned data from the service method call using the DataContractJson Serializer and then formatting the response into the JSON representation
ECC200 Creation In .NET Framework
Using Barcode drawer for .NET framework Control to generate, create ECC200 image in .NET applications.
9: Application Ser vice s
Drawing Barcode In VB.NET
Using Barcode generation for .NET framework Control to generate, create bar code image in .NET applications.
shown in Listing 926 When the JSON is in the correct format, we can send it back to the client, where the JavaScriptSerializer will convert it back to the Customer type
ECC200 Creation In VB.NET
Using Barcode encoder for VS .NET Control to generate, create Data Matrix ECC200 image in .NET framework applications.
Listing 926 JSON Format Expected by the SysSerializationJavaScriptSerializer
Recognizing Bar Code In .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET applications.
{"d":{"__type":"Customer:#ServiceDataSimple", "Address":"1525 Faraday Suite 250","City":"Carlsbad", "CustomerId":1901817923,"FirstName":"Joe","LastName":"Dirt", "State":"CA","Zip":"92009"}}
Create USS Code 128 In Visual Basic .NET
Using Barcode printer for .NET framework Control to generate, create Code 128 image in VS .NET applications.
Listing 927 DataContractJsonSerializer JSON String
Reading GTIN - 13 In Visual Studio .NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in VS .NET applications.
{"Address":"1525 Faraday Suite 250","City":"Carlsbad", "CustomerId":570278328,"FirstName":"Joe","LastName":"Dirt", "State":"CA","Zip":"92009"}
Data Matrix Drawer In Java
Using Barcode printer for Java Control to generate, create Data Matrix 2d barcode image in Java applications.
Listing 928 WriteJsonToResponseStream Method
Bar Code Creator In Java
Using Barcode maker for Java Control to generate, create barcode image in Java applications.
public static void WriteJsonToResponseStream(HttpContext context, object data, Type dataType, Collection<Type> knownTypes) { StringBuilder ajaxAdditions = new StringBuilder(); ajaxAdditionsAppend("{"); ajaxAdditionsAppend("\""); ajaxAdditionsAppend("d"); ajaxAdditionsAppend("\""); //check data for null string json = ConvertObjectToAjaxStyleString(data, dataType, knownTypes); if (json == "null") { ajaxAdditionsAppend(":"); ajaxAdditionsAppend(json); } else { ajaxAdditionsAppend(":{"); ajaxAdditionsAppend("\""); ajaxAdditionsAppend("__type"); ajaxAdditionsAppend("\""); ajaxAdditionsAppend(":"); ajaxAdditionsAppend("\""); ajaxAdditionsAppend(dataTypeName); ajaxAdditionsAppend(":");
EAN 13 Maker In Java
Using Barcode generation for Java Control to generate, create GS1 - 13 image in Java applications.
Custom Application Ser vice s
Barcode Encoder In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
ajaxAdditionsAppend("#"); ajaxAdditionsAppend(dataTypeNamespace); ajaxAdditionsAppend("\""); ajaxAdditionsAppend(","); ajaxAdditionsAppend(json); } ajaxAdditionsAppend("}"); contextResponseAddHeader("Content-Type", "application/json"); contextResponseOutputWrite(ajaxAdditionsToString()); }
Service Proxy The generation of the proxy class for each web service we create has until now been done by registering the WCF web service with the Script Manager This registration instructed the ScriptManager to add a reference to a dynamically created proxy class that we could use on the client to call our web service In the case of our custom application services, this proxy class will not be created for us automatically and will require us to create our own proxy class
Creating and Using the WebServiceProxy Base Class
The SimpleWCFService proxy class shown in Listing 929 represents the SimpleWCFService that was created in our example The class contains many of the same sections we have seen before with the namespace registration, the class constructor, and the class prototype In previous discussion of the proxy class, the namespace was generated by the ScriptManager and was pulled from the ServiceContract namespace setting In the case of our custom application service, this namespace name must be created manually, and any name will do as long as it s unique within the application Another automatic setting that we must address is the path of the service The path of the service must match the URL pattern that our Service HandlerFactory handler is expecting In the case of a proxy, the path points to the SimpleWCFService, which tells the handler that we want to use that application service The remaining portion of the URL creation actually happens by the WebServiceProxy class, which appends the name of the method called to the end of our path to complete the URL This complete
9: Application Ser vice s
buildup is performed during our call to the _invoke method of the Web ServiceProxy base class for each of our service operations, which are created in the class prototype An entry for each service operation supported by the proxy must be created In our case, we have a method for the Save Customer and LookupCustomer service operations, which are the two operations supported by our service The format of these method signatures is the same as in the previous proxies because all of them inherit from the same base class The last thing we discuss concerning the proxy class is the registration of the supporting types that will be passed back and forth between the client and the server Again referring back to the automatic proxy generation, the types used by the web service operations were automatically added to the proxy class In this case, however, the entries again need to be added by hand This requires a multistep process that consists of creating a reference to the WebServiceProxy type generator, adding a namespace entry for the type, and registering the type The use of the custom type name in the format Type:#Namespace is required by the DataContract JsonSerializer on the backend to properly deserialize the type