Simple databinding with XML - A GUI for configuration files

using System;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Windows.Forms;
using System.Reflection;

namespace XmlBindingManager
{
	public class TagSettingTypeConverter : ExpandableObjectConverter
	{
		public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
		{
			if(sourceType == typeof(string)) return true;
			return base.CanConvertFrom (context, sourceType);
		}

		public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
		{
			if(value is string) 
			{
				try 
				{
					string propertyList = (string) value;
					string[] properties = propertyList.Split(';');
					TagSetting setting = new TagSetting();
					setting.XmlTag = properties[0].Trim();
					setting.KeyAttribute = properties[1].Trim();
					return setting;
				}
				catch {}
				throw new ArgumentException("arguments not valid");
			}

			return base.ConvertFrom (context, culture, value);
		}

		public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
		{
			if(destinationType == typeof(InstanceDescriptor)) return true;
			return base.CanConvertTo (context, destinationType);
		}

		public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
		{
			if(value is TagSetting) 
			{
				TagSetting setting = value as TagSetting;
				if(destinationType == typeof(string)) 
				{
					return string.Format("{0}; {1}", setting.XmlTag, setting.KeyAttribute);
				}
				if(destinationType == typeof(InstanceDescriptor)) 
				{
					object[] properties = new object[2] {setting.XmlTag, setting.KeyAttribute};
					Type[] types = new Type[2] {typeof(string), typeof(string)};

					ConstructorInfo ci = typeof(TagSetting).GetConstructor(types);
					return new InstanceDescriptor(ci, properties);
				}
			}

			return base.ConvertTo (context, culture, value, destinationType);
		}

		public override bool GetCreateInstanceSupported(ITypeDescriptorContext context)
		{
			return true;
		}

		public override object CreateInstance(ITypeDescriptorContext context, System.Collections.IDictionary propertyValues)
		{
			TagSetting setting = new TagSetting();
			setting.XmlTag = (string) propertyValues["XmlTag"];
			setting.KeyAttribute = (string) propertyValues["KeyAttribute"];
			return setting;
		}
	}
}