Silverlight Serializable
One of the most useful features of Silverlight 3 is the IsolatedStorage mechanism, which gives the developer access to the filesystem on the client to store data. Now that Silverlight has matured sufficiently to be used in line – of – business and Enterprise – level applications, having a pre-built facility to serialize, compress, store and load multiple objects in IsolatedStorage can be helpful. Silverlight 2.0 doesn't have an equivalent to the BinaryFormatter or NetDataContractSerializer. This makes some things quite challenging - in my case building CSLA Light. CSLA.NET requires high-fidelity serialization both for implementation of the Clone operation and within the data portal. DataContractSerializer is a standard way of serializing business objects by a Silverlight client. But it serializes to XML which is known as a wasteful way of storing data. A better choice would be a binary serialization. But there is a problem - there is no BinaryFormatter in Silverlight at all.
Old forum URL: forums.lhotka.net/forums/t/9891.aspx
Mudbugz posted on Monday, December 20, 2010
The Silverlight FAQ page (http://www.lhotka.net/cslanet/faq/SilverlightFaq.ashx) has a link to a Silverlight serialization page (http://www.lhotka.net/weblog/SilverlightSerializer.aspx) that has an example of how to use MobileObject for criteria classes in Silverlight 2.0.
In Csla 4.0.1, MobileObject doesn't have a GetValue() or SetValue() method to override. Getting and setting each individual property in OnGetState() and OnSetState() is no fun. So, I've create a base class that inherits from MobileObject that does the work for me.
Example criteria class:
[Serializable()]
public class Person: DataPortalCriteria
{
public string FirstName { get; set; }
public string LastName {get; set;}
public Guid Id { get; set; }
public string LoginName { get; set; }
}
Serialize properties using reflection:
[Serializable()]
public class DataPortalCriteria : MobileObject
{
private static List<PropertyInfo> lstProperties;
protected List<PropertyInfo> GetProperties()
{
if (lstProperties null)
{
lstProperties = new List<PropertyInfo>();
Silverlight Serializable Software
PropertyInfo[] pis = this.GetType().GetProperties();
foreach (System.Reflection.PropertyInfo pi in pis)
lstProperties.Add(pi);
}
return lstProperties;
}
protected override void OnGetState(Csla.Serialization.Mobile.SerializationInfo info, StateMode mode)
{
foreach (PropertyInfo pi in GetProperties())
info.AddValue(pi.Name, pi.GetValue(this, null));
}
protected override void OnSetState(Csla.Serialization.Mobile.SerializationInfo info, StateMode mode)
{
foreach (PropertyInfo pi in GetProperties())
pi.SetValue(this, info.GetValue<object>(pi.Name), null);
}
}
RockfordLhotka replied on Monday, December 20, 2010
That is a good idea for your purpose. However, this only works because your properties are public. Silverlight will block non-public reflection.
Our base classes are designed to support normal CSLA business types - where you can't just access the properties because that'd trigger business and authorization rules. So normally you have to access the fields, not the properties. And fields are almost always non-public, so reflection won't work.
You could create a MobileDto base class though, because what you are doing is creating a DTO that you want to be serializable through the data portal. As long as the DTO only has public read-write properties with no business logic this would work pretty well.
Copyright (c) Marimer LLC
How do I DeSerialize my XML (Text) into a Scene (Object) in SL 5.
And where the xml_content would be
Silverlight Serializable In Java
var xml_content = '<Scene>...xml stuff here .. </Scene>';
Scene scene = Scene.Xml_to_Object(xml_content);
2 Answers
The DataContractSerializer can be found in System.Runtime.Serialization. Use it like this:
First of all, your class should be have the properties required to be serialized for xml and specify element name on each property of class.e.g.
Now, you can serialize this as
M.S.M.S.