TrackingQueryElement.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.ServiceModel.Activities / System / ServiceModel / Activities / Tracking / Configuration / TrackingQueryElement.cs / 1305376 / TrackingQueryElement.cs
                        

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

namespace System.ServiceModel.Activities.Tracking.Configuration 
{
    using System.Configuration; 
    using System.Activities.Tracking; 
    using System.Collections.Generic;
    using System.Runtime; 
    using System.Diagnostics.CodeAnalysis;

    // Base class for all the workflow tracking query configuration elements
    [Fx.Tag.XamlVisible(false)] 
    public abstract class TrackingQueryElement : TrackingConfigurationElement
    { 
        ConfigurationPropertyCollection properties; 
        Guid? elementKey;
 
        protected override ConfigurationPropertyCollection Properties
        {
            get
            { 
                if (this.properties == null)
                { 
                    ConfigurationPropertyCollection properties = new ConfigurationPropertyCollection(); 
                    properties.Add(new ConfigurationProperty(TrackingConfigurationStrings.Annotations, typeof(System.ServiceModel.Activities.Tracking.Configuration.AnnotationElementCollection), null, null, null, System.Configuration.ConfigurationPropertyOptions.None));
                    this.properties = properties; 
                }
                return this.properties;
            }
        } 

        [ConfigurationProperty(TrackingConfigurationStrings.Annotations)] 
        public AnnotationElementCollection Annotations 
        {
            get 
            {
                return (AnnotationElementCollection)base[TrackingConfigurationStrings.Annotations];
            }
        } 

        [SuppressMessage(FxCop.Category.Configuration, FxCop.Rule.ConfigurationPropertyAttributeRule, 
            Justification = "This property is defined by the base class to compute unique key.")] 
        public override object ElementKey
        { 
            get
            {
                if (this.elementKey == null)
                { 
                    this.elementKey = Guid.NewGuid();
                } 
                return this.elementKey; 
            }
        } 


        internal TrackingQuery CreateTrackingQuery()
        { 
            TrackingQuery query = NewTrackingQuery();
            UpdateTrackingQuery(query); 
            return query; 
        }
 
        // Override this method to create a query instance and set properties not inherited by derived classes
        protected abstract TrackingQuery NewTrackingQuery();

        // Override this method to set the properties that a derived class may inherit calling the base method 
        protected virtual void UpdateTrackingQuery(TrackingQuery trackingQuery)
        { 
            foreach (AnnotationElement annotation in this.Annotations) 
            {
                trackingQuery.QueryAnnotations.Add(new KeyValuePair(annotation.Name, annotation.Value)); 
            }
        }
    }
} 

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

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