PropertyPathConverter.cs source code in C# .NET

                        
Code:
                         / Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / Framework / System / Windows / PropertyPathConverter.cs / 1 / PropertyPathConverter.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// Copyright (C) Microsoft Corporation.  All rights reserved.
//
// File: PropertyPathConverter.cs 
//
// Description: Contains converter for creating PropertyPath from string 
//              and saving PropertyPath to string 
//
// History: 
//  05/15/2004  - peterost - Initial implementation
//
//---------------------------------------------------------------------------
 
using System;
using System.ComponentModel; 
using System.Collections.ObjectModel; 
using System.Text;
using System.ComponentModel.Design.Serialization; 
using System.Diagnostics;
using System.Globalization;
using System.Reflection;
using System.Windows; 
using System.Windows.Markup;
using MS.Internal; 
using MS.Utility; 

#pragma warning disable 1634, 1691  // suppressing PreSharp warnings 

namespace System.Windows
{
    /// 
 
    /// PropertyPathConverter - Converter class for converting instances of other types
    /// to and from PropertyPath instances. 
    /// 
 
    public sealed class PropertyPathConverter: TypeConverter
    { 
        //-------------------------------------------------------------------
        //
        //  Public Methods
        // 
        //-------------------------------------------------------------------
 
#region Public Methods 

        /// 
 
        /// CanConvertFrom - Returns whether or not this class can convert from a given type.
        /// 
        /// 
        /// bool - True if this converter can convert from the provided type, false if not. 
        /// 
        ///  The ITypeDescriptorContext for this call.  
        ///  The Type being queried for support.  
        public override bool CanConvertFrom(ITypeDescriptorContext typeDescriptorContext, Type sourceType)
        { 
            // We can only handle strings
            if (sourceType == typeof(string))
            {
                return true; 
            }
            else 
            { 
                return false;
            } 
        }

        /// 

        /// CanConvertTo - Returns whether or not this class can convert to a given type. 
        /// 
        ///  
        /// bool - True if this converter can convert to the provided type, false if not. 
        /// 
        ///  The ITypeDescriptorContext for this call.  
        ///  The Type being queried for support. 
        public override bool CanConvertTo(ITypeDescriptorContext typeDescriptorContext, Type destinationType)
        {
            // We can convert to a string. 
            if (destinationType == typeof(string))
            { 
                return true; 
            }
            else 
            {
                return false;
            }
        } 

        /// 
 
        /// ConvertFrom - Attempt to convert to a PropertyPath from the given object 
        /// 
        ///  
        /// The PropertyPath which was constructed.
        /// 
        /// 
        /// An ArgumentNullException is thrown if the example object is null. 
        /// 
        ///  
        /// An ArgumentException is thrown if the example object is not null and is not a valid type 
        /// which can be converted to a PropertyPath.
        ///  
        ///  The ITypeDescriptorContext for this call. 
        ///  The CultureInfo which is respected when converting. 
        ///  The object to convert to a PropertyPath. 
        public override object ConvertFrom(ITypeDescriptorContext typeDescriptorContext, 
                                           CultureInfo cultureInfo,
                                           object source) 
        { 
            if (source == null)
            { 
                throw new ArgumentNullException("source");
            }

            if (source is string) 
            {
                return new PropertyPath((string)source, typeDescriptorContext); 
            } 

            #pragma warning suppress 6506 // source is obviously not null 
            throw new ArgumentException(SR.Get(SRID.CannotConvertType, source.GetType().FullName, typeof(PropertyPath)));
        }

        /// 
 
        /// ConvertTo - Attempt to convert a PropertyPath to the given type
        /// 
 
        ///  
        /// The object which was constructed.
        ///  
        /// 
        /// An ArgumentNullException is thrown if the example object is null.
        /// 
        ///  
        /// An ArgumentException is thrown if the example object is not null and is not a Brush,
        /// or if the destinationType isn't one of the valid destination types. 
        ///  
        ///  The ITypeDescriptorContext for this call.
        ///  If this is null, then no namespace prefixes will be included. 
        ///  The CultureInfo which is respected when converting. 
        ///  The PropertyPath to convert. 
        /// The type to which to convert the PropertyPath instance. 
        public override object ConvertTo(ITypeDescriptorContext typeDescriptorContext, 
                                         CultureInfo cultureInfo,
                                         object value, 
                                         Type destinationType) 
        {
            if (null == value) 
            {
                throw new ArgumentNullException("value");
            }
 
            if (null == destinationType)
            { 
                throw new ArgumentNullException("destinationType"); 
            }
 
            if (destinationType != typeof(String))
            {
                throw new ArgumentException(SR.Get(SRID.CannotConvertType, typeof(PropertyPath), destinationType.FullName));
            } 

            PropertyPath path = value as PropertyPath; 
            if (path == null) 
            {
                throw new ArgumentException(SR.Get(SRID.UnexpectedParameterType, value.GetType(), typeof(PropertyPath)), "value"); 
            }

            if (path.PathParameters.Count == 0)
            { 
                // if the path didn't use paramaters, just write it out as it is
                return path.Path; 
            } 
            else
            { 
                // if the path used parameters, convert them to (NamespacePrefix:OwnerType.DependencyPropertyName) syntax
                string originalPath = path.Path;
                Collection