C#

public class YourComparer : IComparer
{
    int IComparer.Compare( object x, object y )
    {
        Request  request_x= x as Request ;
        Request  request_y= y as Request ;
        if((request_x!=null)&&(request_y!=null))
        {
            return( (new CaseInsensitiveComparer()).Compare( request_x.Name, request_y.Name ) );
        }
        else
        {
            return 0;
        }
    }
}

//For searching of property Attributes
using System.Reflection;
 
Type t = yourObject.GetType();
foreach (PropertyInfo pi in  t.GetProperties())
{
   if(pi.PropertyType.Attributes & TypeAttributes.Serializable) //For excample a comparison to the Serializable Attribute.
   {

   }
}
 
//For Searching of CustomAttributes of your object.
using System.Reflection;
 
Type t = yourObject.GetType();
object[] AllAttributes = t.GetCustomAttributes(true); //For excample

XmlDocument oXML = new XmlDocument();
oXML.LoadXml("<root><name id='1' value='ggg' value2='ttt'/><name id='2' value='erer'/></root>");
            
XmlNodeList nl = oXML.SelectNodes("//name");

foreach (XmlNode n in nl)
{
if (n.Attributes["value2"] != null)
{
     //Do Something
}
}