G-Man G-Man - 1 year ago 117
C# Question

Convert Hashtable to xml string and back to HashTable without using .NET Serializer

Does anyone know how to convert a Hashtable to an XML String then back to a HashTable without using the .NET based XMLSerializer. The XMLSerializer poses some security concerns when code runs inside of IE and the browser's protected mode is turned on -

So basically I am looking for an easy way to convert that Hashtable to string and back to a Hashtable.

Any sample code would be greatly appreciated.


Answer Source

You could use the DataContractSerializer class:

using System;
using System.Collections;
using System.IO;
using System.Runtime.Serialization;
using System.Text;
using System.Xml;

public class MyClass
    public string Foo { get; set; }
    public string Bar { get; set; }

class Program
    static void Main()
        var table = new Hashtable
            { "obj1", new MyClass { Foo = "foo", Bar = "bar" } },
            { "obj2", new MyClass { Foo = "baz" } },

        var sb = new StringBuilder();
        var serializer = new DataContractSerializer(typeof(Hashtable), new[] { typeof(MyClass) });
        using (var writer = new StringWriter(sb))
        using (var xmlWriter = XmlWriter.Create(writer))
            serializer.WriteObject(xmlWriter, table);


        using (var reader = new StringReader(sb.ToString()))
        using (var xmlReader = XmlReader.Create(reader))
            table = (Hashtable)serializer.ReadObject(xmlReader);
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