VisualBasicSettingsConverter.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 / Microsoft / VisualBasic / Activities / XamlIntegration / VisualBasicSettingsConverter.cs / 1407647 / VisualBasicSettingsConverter.cs
                        

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

namespace Microsoft.VisualBasic.Activities.XamlIntegration 
{
    using System; 
    using System.ComponentModel; 
    using System.Runtime;
    using System.Globalization; 
    using System.Activities;

    // this class is necessary in order for our value serializer to get called by XAML,
    // even though the functionality is a no-op 
    public sealed class VisualBasicSettingsConverter : TypeConverter
    { 
        public VisualBasicSettingsConverter() 
            : base()
        { 
        }

        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
        { 
            if (sourceType == TypeHelper.StringType)
            { 
                return true; 
            }
 
            return base.CanConvertFrom(context, sourceType);
        }

        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) 
        {
            if (destinationType == TypeHelper.StringType) 
            { 
                return false;
            } 
            return base.CanConvertTo(context, destinationType);
        }

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) 
        {
            string sourceString = value as string; 
            if (sourceString != null) 
            {
                if (sourceString.Equals(VisualBasicSettingsValueSerializer.ImplementationVisualBasicSettingsValue)) 
                {
                    // this is the VBSettings for the internal implementation
                    // suppress its Xaml serialization
                    VisualBasicSettings settings = CollectXmlNamespacesAndAssemblies(context); 
                    if (settings != null)
                    { 
                        settings.SuppressXamlSerialization = true; 
                    }
                    return settings; 
                }

                if (!(sourceString.Equals(String.Empty) || sourceString.Equals(VisualBasicSettingsValueSerializer.VisualBasicSettingsValue)))
                { 
                    throw FxTrace.Exception.AsError(new InvalidOperationException(SR.InvalidVisualBasicSettingsValue));
                } 
 
                return CollectXmlNamespacesAndAssemblies(context);
            } 
            return base.ConvertFrom(context, culture, value);
        }

        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType) 
        {
            return base.ConvertTo(context, culture, value, destinationType); 
        } 

        VisualBasicSettings CollectXmlNamespacesAndAssemblies(ITypeDescriptorContext context) 
        {
            return VisualBasicExpressionConverter.CollectXmlNamespacesAndAssemblies(context);
        }
 
    }
} 

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

Link Menu

Network programming in C#, Network Programming in VB.NET, Network Programming in .NET
This book is available now!
Buy at Amazon US or
Buy at Amazon UK