TypeToTreeConverter.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / Tools / System.Activities.Core.Presentation / System / ServiceModel / Activities / Presentation / TypeToTreeConverter.cs / 1305376 / TypeToTreeConverter.cs
                        
                        
                            //---------------------------------------------------------------- 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//---------------------------------------------------------------
namespace System.ServiceModel.Activities.Presentation
{ 
    using System;
    using System.Globalization; 
    using System.Linq; 
    using System.Reflection;
    using System.Windows.Data; 
    using System.Activities.Presentation.Model;
    using System.Collections;
    using System.Activities.Core.Presentation;
    using System.Xml; 
    using System.Runtime.Serialization;
    using System.Xml.Serialization; 
 
    sealed class TypeToTreeConverter : IValueConverter
    { 
        object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            Type type = null;
            if (value is ModelItem) 
            {
                value = ((ModelItem)value).GetCurrentValue(); 
            } 
            if (value is Type)
            { 
                type = (Type)value;
            }
            else if (value is PropertyInfo)
            { 
                type = ((PropertyInfo)value).PropertyType;
            } 
            else if (value is FieldInfo) 
            {
                type = ((FieldInfo)value).FieldType; 
            }

            //1) Dead-ends (not expand any more)
 		    //  a. CLR built-in types 
		    //  b. Byte array, DateTime, TimeSpan, GUID, Uri, XmlQualifiedName, XmlElement and XmlNode array [This includes XElement and XNode array from .NET 3.5]
		    //  c. Enums 
            //  d. Arrays and Collection classes including List, Dictionary and Hashtable(Anything that implements IEnumerable or IDictionary or is an array is treated as a collection) 
            //  e. Types marked with [CollectionDataContract] attribute
	        //2) Show nothing (Xpath generator cannot generate XPath according to member info), but user should be able to manually input query string 
 		    //  a. Types that implement IXmlSerializable
		    //  b. Types that implement ISerializable.
 	        //3) Show all fields  without [NonSerializable] regardless of visibility
 		    //  a. Types marked with Serializable attribute 
	        //4) Show all [DataMembers]
 		    //  a. Types marked with DataContract attribute 
	        //5) Show all public fields and properties without [IgnoreDataMember] 
		    //  a. Types with none of the above attributes (POCO) but with a default constructor (can be non-public).
            // 
            //
            //Priority of those interfaces or attributes:
            //IXmlSerializable -> ISerializable -> DataContract -> Serializable
            //Type cannot be Iserializable/IXmlSerializable and have DataContractAttribute attribute. 
            IEnumerable result = null;
            if ((null != type) && (!ContentCorrelationTypeExpander.IsPrimitiveTypeInXPath(type))) 
            { 
                if (type.GetInterface("IXmlSerializable", false) != null)
                { 
                    result = null;
                }
                else if (type.GetInterface("ISerializable", false) != null)
                { 
                    result = null;
                } 
                else if (type.GetCustomAttributes(typeof(DataContractAttribute), false).Length > 0) 
                {
                    result = type 
                        .GetMembers(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)
                        .Where(member => member.GetCustomAttributes(typeof(DataMemberAttribute), false).Length > 0)
                        .OrderBy(member => member.Name);
                } 
                else if (type.GetCustomAttributes(typeof(SerializableAttribute), false).Length > 0)
                { 
                    result = type 
                        .GetMembers(BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public)
                        .Where(member => member.MemberType == MemberTypes.Field && member.GetCustomAttributes(typeof(NonSerializedAttribute), false).Length == 0) 
                        .OrderBy(member => member.Name);
                }
                else if (type.GetConstructor(new Type[0] { }) != null)
                { 
                    result = type
                        .GetMembers(BindingFlags.Instance | BindingFlags.Public) 
                        .Where(member => (member.MemberType == MemberTypes.Field || member.MemberType == MemberTypes.Property) && 
                        (member.GetCustomAttributes(typeof(IgnoreDataMemberAttribute), false).Length == 0))
                        .OrderBy(member => member.Name); 
                }
            }
            return result;
        } 

 
        object IValueConverter.ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) 
        {
            throw FxTrace.Exception.AsError(new NotSupportedException()); 
        }
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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TypeToTreeConverter.cs source code in C# .NET

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