65 lines
2.1 KiB
C#
65 lines
2.1 KiB
C#
//-----------------------------------------------------------------------------
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//-----------------------------------------------------------------------------
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namespace System.Activities.XamlIntegration
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{
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using System;
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using System.ComponentModel;
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using System.Windows.Markup;
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using System.Xaml;
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public sealed class ActivityWithResultValueSerializer : ValueSerializer
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{
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static ActivityWithResultValueSerializer valueSerializer;
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public override bool CanConvertToString(object value, IValueSerializerContext context)
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{
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if (AttachablePropertyServices.GetAttachedPropertyCount(value) > 0)
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{
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return false;
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}
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else if (value != null &&
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value is IValueSerializableExpression &&
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((IValueSerializableExpression)value).CanConvertToString(context))
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{
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return true;
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}
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return false;
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}
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public override string ConvertToString(object value, IValueSerializerContext context)
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{
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IValueSerializableExpression ivsExpr;
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ivsExpr = value as IValueSerializableExpression;
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if (ivsExpr == null)
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{
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throw FxTrace.Exception.AsError(new InvalidOperationException(SR.CannotSerializeExpression(value.GetType())));
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}
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return ivsExpr.ConvertToString(context);
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}
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internal static bool CanConvertToStringWrapper(object value, IValueSerializerContext context)
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{
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if (valueSerializer == null)
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{
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valueSerializer = new ActivityWithResultValueSerializer();
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}
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return valueSerializer.CanConvertToString(value, context);
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}
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internal static string ConvertToStringWrapper(object value, IValueSerializerContext context)
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{
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if (valueSerializer == null)
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{
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valueSerializer = new ActivityWithResultValueSerializer();
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}
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return valueSerializer.ConvertToString(value, context);
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}
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}
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}
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