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Implementing Repository Pattern With Entity Framework

, 2 Nov 2012 CPOL
Implement Repository Pattern in data access layer with Entity Framework 4.0 and Below version( Working with ObjectContext and EntityObject )
RepositoryProjectSample
RepositoryProjectSample
DataModel.edmx
Helper
Implementations
Entity Framework
Interfaces
obj
x86
Debug
edmxResourcesToEmbed
DataModel.csdl
DataModel.msl
DataModel.ssdl
Properties
RepositoryProjectSample.suo
bin
Debug
Release
DataModel.edmx
DesignTimeResolveAssemblyReferencesInput.cache
DataModel.csdl
DataModel.msl
DataModel.ssdl
RepositoryProjectSample.csprojResolveAssemblyReference.cache
RepositoryProjectSample.exe
RepositoryProjectSample.pdb
TempPE
DataModel.Designer.cs.dll
RepositoryProjectSample.suo
//------------------------------------------------------------------------------
// <auto-generated>
//    This code was generated from a template.
//
//    Manual changes to this file may cause unexpected behavior in your application.
//    Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

using System;
using System.ComponentModel;
using System.Data.EntityClient;
using System.Data.Objects;
using System.Data.Objects.DataClasses;
using System.Linq;
using System.Runtime.Serialization;
using System.Xml.Serialization;

[assembly: EdmSchemaAttribute()]
#region EDM Relationship Metadata

[assembly: EdmRelationshipAttribute("ProjectCodeModel", "FK_dbo_BlogPosts_dbo_Categories_CategoryId", "Categories", System.Data.Metadata.Edm.RelationshipMultiplicity.One, typeof(RepositoryProjectSample.Category), "BlogPosts", System.Data.Metadata.Edm.RelationshipMultiplicity.Many, typeof(RepositoryProjectSample.BlogPost), true)]

#endregion

namespace RepositoryProjectSample
{
    #region Contexts
    
    /// <summary>
    /// No Metadata Documentation available.
    /// </summary>
    public partial class ProjectCodeEntities : ObjectContext
    {
        #region Constructors
    
        /// <summary>
        /// Initializes a new ProjectCodeEntities object using the connection string found in the 'ProjectCodeEntities' section of the application configuration file.
        /// </summary>
        public ProjectCodeEntities() : base("name=ProjectCodeEntities", "ProjectCodeEntities")
        {
            this.ContextOptions.LazyLoadingEnabled = true;
            OnContextCreated();
        }
    
        /// <summary>
        /// Initialize a new ProjectCodeEntities object.
        /// </summary>
        public ProjectCodeEntities(string connectionString) : base(connectionString, "ProjectCodeEntities")
        {
            this.ContextOptions.LazyLoadingEnabled = true;
            OnContextCreated();
        }
    
        /// <summary>
        /// Initialize a new ProjectCodeEntities object.
        /// </summary>
        public ProjectCodeEntities(EntityConnection connection) : base(connection, "ProjectCodeEntities")
        {
            this.ContextOptions.LazyLoadingEnabled = true;
            OnContextCreated();
        }
    
        #endregion
    
        #region Partial Methods
    
        partial void OnContextCreated();
    
        #endregion
    
        #region ObjectSet Properties
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        public ObjectSet<C__MigrationHistory> C__MigrationHistory
        {
            get
            {
                if ((_C__MigrationHistory == null))
                {
                    _C__MigrationHistory = base.CreateObjectSet<C__MigrationHistory>("C__MigrationHistory");
                }
                return _C__MigrationHistory;
            }
        }
        private ObjectSet<C__MigrationHistory> _C__MigrationHistory;
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        public ObjectSet<BlogPost> BlogPosts
        {
            get
            {
                if ((_BlogPosts == null))
                {
                    _BlogPosts = base.CreateObjectSet<BlogPost>("BlogPosts");
                }
                return _BlogPosts;
            }
        }
        private ObjectSet<BlogPost> _BlogPosts;
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        public ObjectSet<Category> Categories
        {
            get
            {
                if ((_Categories == null))
                {
                    _Categories = base.CreateObjectSet<Category>("Categories");
                }
                return _Categories;
            }
        }
        private ObjectSet<Category> _Categories;

        #endregion

        #region AddTo Methods
    
        /// <summary>
        /// Deprecated Method for adding a new object to the C__MigrationHistory EntitySet. Consider using the .Add method of the associated ObjectSet&lt;T&gt; property instead.
        /// </summary>
        public void AddToC__MigrationHistory(C__MigrationHistory c__MigrationHistory)
        {
            base.AddObject("C__MigrationHistory", c__MigrationHistory);
        }
    
        /// <summary>
        /// Deprecated Method for adding a new object to the BlogPosts EntitySet. Consider using the .Add method of the associated ObjectSet&lt;T&gt; property instead.
        /// </summary>
        public void AddToBlogPosts(BlogPost blogPost)
        {
            base.AddObject("BlogPosts", blogPost);
        }
    
        /// <summary>
        /// Deprecated Method for adding a new object to the Categories EntitySet. Consider using the .Add method of the associated ObjectSet&lt;T&gt; property instead.
        /// </summary>
        public void AddToCategories(Category category)
        {
            base.AddObject("Categories", category);
        }

        #endregion

    }

    #endregion

    #region Entities
    
    /// <summary>
    /// No Metadata Documentation available.
    /// </summary>
    [EdmEntityTypeAttribute(NamespaceName="ProjectCodeModel", Name="BlogPost")]
    [Serializable()]
    [DataContractAttribute(IsReference=true)]
    public partial class BlogPost : EntityObject
    {
        #region Factory Method
    
        /// <summary>
        /// Create a new BlogPost object.
        /// </summary>
        /// <param name="id">Initial value of the Id property.</param>
        /// <param name="publishDate">Initial value of the PublishDate property.</param>
        /// <param name="categoryId">Initial value of the CategoryId property.</param>
        public static BlogPost CreateBlogPost(global::System.Guid id, global::System.DateTime publishDate, global::System.Guid categoryId)
        {
            BlogPost blogPost = new BlogPost();
            blogPost.Id = id;
            blogPost.PublishDate = publishDate;
            blogPost.CategoryId = categoryId;
            return blogPost;
        }

        #endregion

        #region Primitive Properties
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=true, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.Guid Id
        {
            get
            {
                return _Id;
            }
            set
            {
                if (_Id != value)
                {
                    OnIdChanging(value);
                    ReportPropertyChanging("Id");
                    _Id = StructuralObject.SetValidValue(value);
                    ReportPropertyChanged("Id");
                    OnIdChanged();
                }
            }
        }
        private global::System.Guid _Id;
        partial void OnIdChanging(global::System.Guid value);
        partial void OnIdChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=true)]
        [DataMemberAttribute()]
        public global::System.String Title
        {
            get
            {
                return _Title;
            }
            set
            {
                OnTitleChanging(value);
                ReportPropertyChanging("Title");
                _Title = StructuralObject.SetValidValue(value, true);
                ReportPropertyChanged("Title");
                OnTitleChanged();
            }
        }
        private global::System.String _Title;
        partial void OnTitleChanging(global::System.String value);
        partial void OnTitleChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=true)]
        [DataMemberAttribute()]
        public global::System.String Content
        {
            get
            {
                return _Content;
            }
            set
            {
                OnContentChanging(value);
                ReportPropertyChanging("Content");
                _Content = StructuralObject.SetValidValue(value, true);
                ReportPropertyChanged("Content");
                OnContentChanged();
            }
        }
        private global::System.String _Content;
        partial void OnContentChanging(global::System.String value);
        partial void OnContentChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.DateTime PublishDate
        {
            get
            {
                return _PublishDate;
            }
            set
            {
                OnPublishDateChanging(value);
                ReportPropertyChanging("PublishDate");
                _PublishDate = StructuralObject.SetValidValue(value);
                ReportPropertyChanged("PublishDate");
                OnPublishDateChanged();
            }
        }
        private global::System.DateTime _PublishDate;
        partial void OnPublishDateChanging(global::System.DateTime value);
        partial void OnPublishDateChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.Guid CategoryId
        {
            get
            {
                return _CategoryId;
            }
            set
            {
                OnCategoryIdChanging(value);
                ReportPropertyChanging("CategoryId");
                _CategoryId = StructuralObject.SetValidValue(value);
                ReportPropertyChanged("CategoryId");
                OnCategoryIdChanged();
            }
        }
        private global::System.Guid _CategoryId;
        partial void OnCategoryIdChanging(global::System.Guid value);
        partial void OnCategoryIdChanged();

        #endregion

    
        #region Navigation Properties
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [XmlIgnoreAttribute()]
        [SoapIgnoreAttribute()]
        [DataMemberAttribute()]
        [EdmRelationshipNavigationPropertyAttribute("ProjectCodeModel", "FK_dbo_BlogPosts_dbo_Categories_CategoryId", "Categories")]
        public Category Category
        {
            get
            {
                return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<Category>("ProjectCodeModel.FK_dbo_BlogPosts_dbo_Categories_CategoryId", "Categories").Value;
            }
            set
            {
                ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<Category>("ProjectCodeModel.FK_dbo_BlogPosts_dbo_Categories_CategoryId", "Categories").Value = value;
            }
        }
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [BrowsableAttribute(false)]
        [DataMemberAttribute()]
        public EntityReference<Category> CategoryReference
        {
            get
            {
                return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedReference<Category>("ProjectCodeModel.FK_dbo_BlogPosts_dbo_Categories_CategoryId", "Categories");
            }
            set
            {
                if ((value != null))
                {
                    ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedReference<Category>("ProjectCodeModel.FK_dbo_BlogPosts_dbo_Categories_CategoryId", "Categories", value);
                }
            }
        }

        #endregion

    }
    
    /// <summary>
    /// No Metadata Documentation available.
    /// </summary>
    [EdmEntityTypeAttribute(NamespaceName="ProjectCodeModel", Name="C__MigrationHistory")]
    [Serializable()]
    [DataContractAttribute(IsReference=true)]
    public partial class C__MigrationHistory : EntityObject
    {
        #region Factory Method
    
        /// <summary>
        /// Create a new C__MigrationHistory object.
        /// </summary>
        /// <param name="migrationId">Initial value of the MigrationId property.</param>
        /// <param name="model">Initial value of the Model property.</param>
        /// <param name="productVersion">Initial value of the ProductVersion property.</param>
        public static C__MigrationHistory CreateC__MigrationHistory(global::System.String migrationId, global::System.Byte[] model, global::System.String productVersion)
        {
            C__MigrationHistory c__MigrationHistory = new C__MigrationHistory();
            c__MigrationHistory.MigrationId = migrationId;
            c__MigrationHistory.Model = model;
            c__MigrationHistory.ProductVersion = productVersion;
            return c__MigrationHistory;
        }

        #endregion

        #region Primitive Properties
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=true, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.String MigrationId
        {
            get
            {
                return _MigrationId;
            }
            set
            {
                if (_MigrationId != value)
                {
                    OnMigrationIdChanging(value);
                    ReportPropertyChanging("MigrationId");
                    _MigrationId = StructuralObject.SetValidValue(value, false);
                    ReportPropertyChanged("MigrationId");
                    OnMigrationIdChanged();
                }
            }
        }
        private global::System.String _MigrationId;
        partial void OnMigrationIdChanging(global::System.String value);
        partial void OnMigrationIdChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.Byte[] Model
        {
            get
            {
                return StructuralObject.GetValidValue(_Model);
            }
            set
            {
                OnModelChanging(value);
                ReportPropertyChanging("Model");
                _Model = StructuralObject.SetValidValue(value, false);
                ReportPropertyChanged("Model");
                OnModelChanged();
            }
        }
        private global::System.Byte[] _Model;
        partial void OnModelChanging(global::System.Byte[] value);
        partial void OnModelChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.String ProductVersion
        {
            get
            {
                return _ProductVersion;
            }
            set
            {
                OnProductVersionChanging(value);
                ReportPropertyChanging("ProductVersion");
                _ProductVersion = StructuralObject.SetValidValue(value, false);
                ReportPropertyChanged("ProductVersion");
                OnProductVersionChanged();
            }
        }
        private global::System.String _ProductVersion;
        partial void OnProductVersionChanging(global::System.String value);
        partial void OnProductVersionChanged();

        #endregion

    
    }
    
    /// <summary>
    /// No Metadata Documentation available.
    /// </summary>
    [EdmEntityTypeAttribute(NamespaceName="ProjectCodeModel", Name="Category")]
    [Serializable()]
    [DataContractAttribute(IsReference=true)]
    public partial class Category : EntityObject
    {
        #region Factory Method
    
        /// <summary>
        /// Create a new Category object.
        /// </summary>
        /// <param name="id">Initial value of the Id property.</param>
        public static Category CreateCategory(global::System.Guid id)
        {
            Category category = new Category();
            category.Id = id;
            return category;
        }

        #endregion

        #region Primitive Properties
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=true, IsNullable=false)]
        [DataMemberAttribute()]
        public global::System.Guid Id
        {
            get
            {
                return _Id;
            }
            set
            {
                if (_Id != value)
                {
                    OnIdChanging(value);
                    ReportPropertyChanging("Id");
                    _Id = StructuralObject.SetValidValue(value);
                    ReportPropertyChanged("Id");
                    OnIdChanged();
                }
            }
        }
        private global::System.Guid _Id;
        partial void OnIdChanging(global::System.Guid value);
        partial void OnIdChanged();
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [EdmScalarPropertyAttribute(EntityKeyProperty=false, IsNullable=true)]
        [DataMemberAttribute()]
        public global::System.String Name
        {
            get
            {
                return _Name;
            }
            set
            {
                OnNameChanging(value);
                ReportPropertyChanging("Name");
                _Name = StructuralObject.SetValidValue(value, true);
                ReportPropertyChanged("Name");
                OnNameChanged();
            }
        }
        private global::System.String _Name;
        partial void OnNameChanging(global::System.String value);
        partial void OnNameChanged();

        #endregion

    
        #region Navigation Properties
    
        /// <summary>
        /// No Metadata Documentation available.
        /// </summary>
        [XmlIgnoreAttribute()]
        [SoapIgnoreAttribute()]
        [DataMemberAttribute()]
        [EdmRelationshipNavigationPropertyAttribute("ProjectCodeModel", "FK_dbo_BlogPosts_dbo_Categories_CategoryId", "BlogPosts")]
        public EntityCollection<BlogPost> BlogPosts
        {
            get
            {
                return ((IEntityWithRelationships)this).RelationshipManager.GetRelatedCollection<BlogPost>("ProjectCodeModel.FK_dbo_BlogPosts_dbo_Categories_CategoryId", "BlogPosts");
            }
            set
            {
                if ((value != null))
                {
                    ((IEntityWithRelationships)this).RelationshipManager.InitializeRelatedCollection<BlogPost>("ProjectCodeModel.FK_dbo_BlogPosts_dbo_Categories_CategoryId", "BlogPosts", value);
                }
            }
        }

        #endregion

    }

    #endregion

    
}

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About the Author

Morshed Anwar
Team Leader PracticePRO Software Systems Inc
United States United States
"In my childhood, my uncle has shown me how to see the cloud in a close look and I understand that one can draw some elements of the Earth in the sky-canvas if he/she wants to. After that the cloud becomes closer to me and It teaches me one thing that, a deeper-look to something will give you some clues to draw your imagination. You can able to see that one which you have build-up in your mind.

Years past, I have started my career as a software engineer and has been looking for passion in my coding and development which I should be to enjoy my profession and has started asking myself- 'am I doing any engineering here?!' Is my code becoming that thing which I have designed in my mind? So to find that answer I have tried that old solution here... I have decided to come closer to my code and start analyzing them. And it is really working for me and at least it gives me the confidence that I can build something that I really want to. I can draw my thinking there through my code and can build-up my vision that I have designed in my mind. It also helps me to think out of the box, solve each problems by making blocks and make me careful on each steps." ----- says Morshed Anwar.

• Morshed's Technical Blog site: http://morshedanwar.wordpress.com/

• Morshed's Technical articles those are published in Codeproject site: http://www.codeproject.com/script/Articles/MemberArticles.aspx?amid=2992452

• Morshed's Linkedin profile: http://www.linkedin.com/in/morshedanwar

• Morshed's Facebook Profile : http://www.facebook.com/morshed.pulok

Beside all these Morshed like to do - photography and music. Here is Morshed's Flickr photos : http://www.flickr.com/photos/morshed_anwar/

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