DiscoveryMessageSequence.cs source code in C# .NET

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

namespace System.ServiceModel.Discovery 
{
    using System; 
    using System.Diagnostics.CodeAnalysis; 
    using System.Globalization;
    using System.Runtime; 
    using System.Xml;
    using SR2 = System.ServiceModel.Discovery.SR;

    [Fx.Tag.XamlVisible(false)] 
    [SuppressMessage("Microsoft.Design", "CA1036:OverrideMethodsOnComparableTypes")]
    public class DiscoveryMessageSequence : 
        IComparable, 
        IEquatable
    { 
        internal DiscoveryMessageSequence()
        {
        }
 
        internal DiscoveryMessageSequence(long instanceId, Uri sequenceId, long messageNumber)
        { 
            Fx.Assert((instanceId >= 0) && (instanceId <= UInt32.MaxValue), "The instanceId must be within UInt32 range"); 
            Fx.Assert((messageNumber >= 0) && (messageNumber <= UInt32.MaxValue), "The messageNumber must be within UInt32 range");
 
            this.InstanceId = instanceId;
            this.SequenceId = sequenceId;
            this.MessageNumber = messageNumber;
        } 

        public long InstanceId 
        { 
            get;
            private set; 
        }

        public Uri SequenceId
        { 
            get;
            private set; 
        } 

        public long MessageNumber 
        {
            get;
            private set;
        } 

        public static bool operator ==(DiscoveryMessageSequence messageSequence1, DiscoveryMessageSequence messageSequence2) 
        { 
            if (object.ReferenceEquals(messageSequence1, null) && object.ReferenceEquals(messageSequence2, null))
            { 
                return true;
            }
            if (object.ReferenceEquals(messageSequence1, null) || object.ReferenceEquals(messageSequence2, null))
            { 
                return false;
            } 
            return messageSequence1.Equals(messageSequence2); 
        }
 
        public static bool operator !=(DiscoveryMessageSequence messageSequence1, DiscoveryMessageSequence messageSequence2)
        {
            return !(messageSequence1 == messageSequence2);
        } 

        public override bool Equals(object obj) 
        { 
            DiscoveryMessageSequence other = obj as DiscoveryMessageSequence;
            return this.Equals(other); 
        }

        public bool Equals(DiscoveryMessageSequence other)
        { 
            if (object.ReferenceEquals(other, null))
            { 
                return false; 
            }
            if (object.ReferenceEquals(this, other)) 
            {
                return true;
            }
 
            return (long.Equals(this.InstanceId, other.InstanceId) &&
                Uri.Equals(this.SequenceId, other.SequenceId) && 
                long.Equals(this.MessageNumber, other.MessageNumber)); 
        }
 
        public override string ToString()
        {
            return SR.DiscoveryMessageSequenceToString(this.InstanceId, this.SequenceId, this.MessageNumber);
        } 

        public bool CanCompareTo(DiscoveryMessageSequence other) 
        { 
            if (object.ReferenceEquals(other, null))
            { 
                return false;
            }
            else
            { 
                return ((this.InstanceId != other.InstanceId) ||
                    (Uri.Equals(this.SequenceId, other.SequenceId))); 
            } 
        }
 
        public override int GetHashCode()
        {
            return string.Format(
                CultureInfo.InvariantCulture, "{0}:{1}:{2}", 
                this.InstanceId,
                this.SequenceId, 
                this.MessageNumber).GetHashCode(); 
        }
 
        public int CompareTo(DiscoveryMessageSequence other)
        {
            if (object.ReferenceEquals(other, null))
            { 
                throw FxTrace.Exception.ArgumentNull("other");
            } 
 
            int result = this.InstanceId.CompareTo(other.InstanceId);
            if (result == 0) 
            {
                if (!Uri.Equals(this.SequenceId, other.SequenceId))
                {
                    throw FxTrace.Exception.Argument("other", SR2.DiscoveryIncompatibleMessageSequence); 
                }
 
                result = this.MessageNumber.CompareTo(other.MessageNumber); 
            }
 
            return result;
        }

        [Fx.Tag.Throws(typeof(XmlException), "throws on incorrect xml data")] 
        internal void ReadFrom(XmlReader reader)
        { 
            if (reader == null) 
            {
                throw FxTrace.Exception.ArgumentNull("reader"); 
            }

            string instanceIdString = reader.GetAttribute(ProtocolStrings.SchemaNames.AppSequenceInstanceId);
 
            this.InstanceId = SerializationUtility.ReadUInt(
                instanceIdString, 
                SR2.DiscoveryXmlMissingAppSequenceInstanceId, 
                SR2.DiscoveryXmlInvalidAppSequenceInstanceId);
 
            string sequenceIdString = reader.GetAttribute(ProtocolStrings.SchemaNames.AppSequenceSequenceId);

            if (sequenceIdString != null)
            { 
                try
                { 
                    this.SequenceId = new Uri(sequenceIdString, UriKind.RelativeOrAbsolute); 
                }
                catch (FormatException fe) 
                {
                    throw FxTrace.Exception.AsError(new XmlException(SR2.DiscoveryXmlUriFormatError(sequenceIdString), fe));
                }
            } 

            string messageNumberString = reader.GetAttribute(ProtocolStrings.SchemaNames.AppSequenceMessageNumber); 
 
            this.MessageNumber = SerializationUtility.ReadUInt(
                messageNumberString, 
                SR2.DiscoveryXmlMissingAppSequenceMessageNumber,
                SR2.DiscoveryXmlInvalidAppSequenceMessageNumber);
        }
 
        internal void WriteTo(XmlWriter writer)
        { 
            if (writer == null) 
            {
                throw FxTrace.Exception.ArgumentNull("writer"); 
            }

            writer.WriteAttributeString(
                ProtocolStrings.SchemaNames.AppSequenceInstanceId, 
                this.InstanceId.ToString(CultureInfo.InvariantCulture));
 
            if (this.SequenceId != null) 
            {
                writer.WriteAttributeString( 
                    ProtocolStrings.SchemaNames.AppSequenceSequenceId,
                    this.SequenceId.GetComponents(UriComponents.SerializationInfoString, UriFormat.UriEscaped));
            }
 
            writer.WriteAttributeString(
                ProtocolStrings.SchemaNames.AppSequenceMessageNumber, 
                this.MessageNumber.ToString(CultureInfo.InvariantCulture)); 
        }
    } 
}

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

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