ActivityWithResultValueSerializer.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 / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / XamlIntegration / ActivityWithResultValueSerializer.cs / 1305376 / ActivityWithResultValueSerializer.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.Activities.XamlIntegration 
{
    using System; 
    using System.ComponentModel; 
    using System.Windows.Markup;
    using System.Xaml; 

    public sealed class ActivityWithResultValueSerializer : ValueSerializer
    {
        static ActivityWithResultValueSerializer valueSerializer; 

        public override bool CanConvertToString(object value, IValueSerializerContext context) 
        { 
            if (AttachablePropertyServices.GetAttachedPropertyCount(value) > 0)
            { 
                return false;
            }
            else if (value != null &&
                value is IValueSerializableExpression && 
                ((IValueSerializableExpression)value).CanConvertToString(context))
            { 
                return true; 
            }
 
            return false;
        }

        public override string ConvertToString(object value, IValueSerializerContext context) 
        {
            IValueSerializableExpression ivsExpr; 
 
            ivsExpr = value as IValueSerializableExpression;
            if (ivsExpr == null) 
            {
                throw FxTrace.Exception.AsError(new InvalidOperationException(SR.CannotSerializeExpression(value.GetType())));
            }
            return ivsExpr.ConvertToString(context); 
        }
 
        internal static bool CanConvertToStringWrapper(object value, IValueSerializerContext context) 
        {
            if (valueSerializer == null) 
            {
                valueSerializer = new ActivityWithResultValueSerializer();
            }
 
            return valueSerializer.CanConvertToString(value, context);
        } 
 
        internal static string ConvertToStringWrapper(object value, IValueSerializerContext context)
        { 
            if (valueSerializer == null)
            {
                valueSerializer = new ActivityWithResultValueSerializer();
            } 

            return valueSerializer.ConvertToString(value, context); 
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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