TemplateBindingExtensionConverter.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / TemplateBindingExtensionConverter.cs / 1305600 / TemplateBindingExtensionConverter.cs
                        

                        
                            //------------------------------------------------------------------------ 
//
//  Microsoft Windows Client Platform
//  Copyright (C) Microsoft Corporation, 2005
// 
//  File:      ElementItem.cs
// 
//  Contents:  Implements a converter to an instance descriptor for 
//             TemplateBindingExtension
// 
//  Created:   04/28/2005 [....]
//
//-----------------------------------------------------------------------
 
using System;
using System.ComponentModel; 
using System.ComponentModel.Design.Serialization; 
using System.Globalization;
using System.Windows; 
using System.Security;

namespace System.Windows
{ 
    /// 
    /// Type converter to inform the serialization system how to construct a TemplateBindingExtension from 
    /// an instance. It reports that Property should be used as the first parameter to the constructor. 
    /// 
    public class TemplateBindingExtensionConverter : TypeConverter 
    {
        /// 
        /// Returns true if converting to an InstanceDescriptor
        ///  
        /// 
        ///  
        ///  
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
        { 
            if (destinationType == typeof(InstanceDescriptor))
            {
                return true;
            } 
            return base.CanConvertTo(context, destinationType);
        } 
 
        /// 
        /// Converts to an InstanceDescriptor 
        /// 
        ///
        ///     Critical: calls InstanceDescriptor ctor which LinkDemands
        ///     PublicOK: can only make an InstanceDescriptor for TemplateBindingExtension, not an arbitrary class 
        ///
        [SecurityCritical] 
        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
        {
            if (destinationType == typeof(InstanceDescriptor)) 
            {
                if(value == null)
                    throw new ArgumentNullException("value");
 
                TemplateBindingExtension templateBinding = value as TemplateBindingExtension;
 
                if(templateBinding == null) 
                    throw new ArgumentException(SR.Get(SRID.MustBeOfType, "value", "TemplateBindingExtension"), "value");
 
                return new InstanceDescriptor(typeof(TemplateBindingExtension).GetConstructor(new Type[] { typeof(DependencyProperty) }),
                    new object[] { templateBinding.Property });
            }
            return base.ConvertTo(context, culture, value, destinationType); 
        }
 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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