ActivityXamlServices.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / NetFx40 / System.Activities / System / Activities / XamlIntegration / ActivityXamlServices.cs / 1305376 / ActivityXamlServices.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.Activities.XamlIntegration 
{
    using System; 
    using System.Collections.Generic; 
    using System.ComponentModel;
    using System.IO; 
    using System.Reflection;
    using System.Xaml;
    using System.Xml;
 
    public static class ActivityXamlServices
    { 
        static readonly XamlSchemaContext dynamicActivityReaderSchemaContext = new DynamicActivityReaderSchemaContext(); 

        public static Activity Load(Stream stream) 
        {
            if (stream == null)
            {
                throw FxTrace.Exception.ArgumentNull("stream"); 
            }
            using (XmlReader xmlReader = XmlReader.Create(stream)) 
            { 
                return Load(xmlReader);
            } 
        }

        public static Activity Load(string fileName)
        { 
            if (fileName == null)
            { 
                throw FxTrace.Exception.ArgumentNull("fileName"); 
            }
            using (XmlReader xmlReader = XmlReader.Create(fileName)) 
            {
                return Load(xmlReader);
            }
        } 

        public static Activity Load(TextReader textReader) 
        { 
            if (textReader == null)
            { 
                throw FxTrace.Exception.ArgumentNull("textReader");
            }

            using (XmlReader xmlReader = XmlReader.Create(textReader)) 
            {
                return Load(xmlReader); 
            } 
        }
 
        public static Activity Load(XmlReader xmlReader)
        {
            if (xmlReader == null)
            { 
                throw FxTrace.Exception.ArgumentNull("xmlReader");
            } 
 
            using (XamlXmlReader xamlReader = new XamlXmlReader(xmlReader, dynamicActivityReaderSchemaContext))
            { 
                return Load(xamlReader);
            }
        }
 
        public static Activity Load(XamlReader xamlReader)
        { 
            if (xamlReader == null) 
            {
                throw FxTrace.Exception.ArgumentNull("xamlReader"); 
            }

            DynamicActivityXamlReader dynamicActivityReader = new DynamicActivityXamlReader(xamlReader);
            object xamlObject = XamlServices.Load(dynamicActivityReader); 
            Activity result = xamlObject as Activity;
            if (result == null) 
            { 
                throw FxTrace.Exception.Argument("reader", SR.ActivityXamlServicesRequiresActivity(
                    xamlObject != null ? xamlObject.GetType().FullName : string.Empty)); 
            }

            return result;
        } 

        public static XamlReader CreateReader(Stream stream) 
        { 
            if (stream == null)
            { 
                throw FxTrace.Exception.ArgumentNull("stream");
            }

            return CreateReader(new XamlXmlReader(XmlReader.Create(stream), dynamicActivityReaderSchemaContext), dynamicActivityReaderSchemaContext); 
        }
 
        public static XamlReader CreateReader(XamlReader innerReader) 
        {
            if (innerReader == null) 
            {
                throw FxTrace.Exception.ArgumentNull("innerReader");
            }
 
            return new DynamicActivityXamlReader(innerReader);
        } 
 
        public static XamlReader CreateReader(XamlReader innerReader, XamlSchemaContext schemaContext)
        { 
            if (innerReader == null)
            {
                throw FxTrace.Exception.ArgumentNull("innerReader");
            } 

            if (schemaContext == null) 
            { 
                throw FxTrace.Exception.ArgumentNull("schemaContext");
            } 

            return new DynamicActivityXamlReader(innerReader, schemaContext);
        }
 
        public static XamlReader CreateBuilderReader(XamlReader innerReader)
        { 
            if (innerReader == null) 
            {
                throw FxTrace.Exception.ArgumentNull("innerReader"); 
            }

            return new DynamicActivityXamlReader(true, innerReader, null);
        } 

        public static XamlReader CreateBuilderReader(XamlReader innerReader, XamlSchemaContext schemaContext) 
        { 
            if (innerReader == null)
            { 
                throw FxTrace.Exception.ArgumentNull("innerReader");
            }

            if (schemaContext == null) 
            {
                throw FxTrace.Exception.ArgumentNull("schemaContext"); 
            } 

            return new DynamicActivityXamlReader(true, innerReader, schemaContext); 
        }

        public static XamlWriter CreateBuilderWriter(XamlWriter innerWriter)
        { 
            if (innerWriter == null)
            { 
                throw FxTrace.Exception.ArgumentNull("innerWriter"); 
            }
 
            return new ActivityBuilderXamlWriter(innerWriter);
        }

        class DynamicActivityReaderSchemaContext : XamlSchemaContext 
        {
            static bool serviceModelLoaded; 
 
            const string serviceModelDll = "System.ServiceModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
            const string serviceModelActivitiesDll = "System.ServiceModel.Activities, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"; 

            const string serviceModelNamespace = "http://schemas.microsoft.com/netfx/2009/xaml/servicemodel";

            // Eventually this will be unnecessary since XAML team has changed the default behavior 
            public DynamicActivityReaderSchemaContext()
                : base(new XamlSchemaContextSettings()) 
            { 
            }
 
            protected override XamlType GetXamlType(string xamlNamespace, string name, params XamlType[] typeArguments)
            {
                XamlType xamlType = base.GetXamlType(xamlNamespace, name, typeArguments);
 
                if (xamlType == null)
                { 
                    if (xamlNamespace == serviceModelNamespace && !serviceModelLoaded) 
                    {
                        Assembly.Load(serviceModelDll); 
                        Assembly.Load(serviceModelActivitiesDll);
                        serviceModelLoaded = true;
                        xamlType = base.GetXamlType(xamlNamespace, name, typeArguments);
                    } 
                }
                return xamlType; 
            } 
        }
    } 
}

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

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