How to convert objects in reflection (Linq to XML)
- by user829174
I have the following code which is working fine,
the code creates plugins in reflection via run time:
using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Xml.Linq;
using System.Reflection;
using System.Text;
namespace WindowsFormsApplication1
{
public abstract class Plugin
{
public string Type { get; set; }
public string Message { get; set; }
}
public class FilePlugin : Plugin
{
public string Path { get; set; }
}
public class RegsitryPlugin : Plugin
{
public string Key { get; set; }
public string Name { get; set; }
public string Value { get; set; }
}
static class MyProgram
{
[STAThread]
static void Main(string[] args)
{
string xmlstr =@"
<Client>
<Plugin Type=""FilePlugin"">
<Message>i am a file plugin</Message>
<Path>c:\</Path>
</Plugin>
<Plugin Type=""RegsitryPlugin"">
<Message>i am a registry plugin</Message>
<Key>HKLM\Software\Microsoft</Key>
<Name>Version</Name>
<Value>3.5</Value>
</Plugin>
</Client>
";
Assembly asm = Assembly.GetExecutingAssembly();
XDocument xDoc = XDocument.Load(new StringReader(xmlstr));
Plugin[] plugins = xDoc.Descendants("Plugin")
.Select(plugin =>
{
string typeName = plugin.Attribute("Type").Value;
var type = asm.GetTypes().Where(t => t.Name == typeName).First();
Plugin p = Activator.CreateInstance(type) as Plugin;
p.Type = typeName;
foreach (var prop in plugin.Descendants())
{
var pi = type.GetProperty(prop.Name.LocalName);
object newVal = Convert.ChangeType(prop.Value, pi.PropertyType);
pi.SetValue(p, newVal, null);
}
return p;
}).ToArray();
//
//"plugins" ready to use
//
}
}
}
I am trying to modify the code and adding new class named DetailedPlugin so it will be able to read the following xml:
string newXml = @"
<Client>
<Plugin Type=""FilePlugin"">
<Message>i am a file plugin</Message>
<Path>c:\</Path>
<DetailedPlugin Type=""DetailedFilePlugin"">
<Message>I am a detailed file plugin</Message>
</DetailedPlugin>
</Plugin>
<Plugin Type=""RegsitryPlugin"">
<Message>i am a registry plugin</Message>
<Key>HKLM\Software\Microsoft</Key>
<Name>Version</Name>
<Value>3.5</Value>
<DetailedPlugin Type=""DetailedRegsitryPlugin"">
<Message>I am a detailed registry plugin</Message>
</DetailedPlugin>
</Plugin>
</Client>
";
for this i modified my classes to the following:
public abstract class Plugin
{
public string Type { get; set; }
public string Message { get; set; }
public DetailedPlugin DetailedPlugin { get; set; } // new
}
public class FilePlugin : Plugin
{
public string Path { get; set; }
}
public class RegsitryPlugin : Plugin
{
public string Key { get; set; }
public string Name { get; set; }
public string Value { get; set; }
}
// new classes:
public abstract class DetailedPlugin
{
public string Type { get; set; }
public string Message { get; set; }
}
public class DetailedFilePlugin : Plugin
{
public string ExtraField1 { get; set; }
}
public class DetailedRegsitryPlugin : Plugin
{
public string ExtraField2{ get; set; }
}
from here i need some help to accomplish reading the xml and create the plugins with the nested DetailedPlugin
