Entity Framework Basics

ASP.Net Core/EntityFrameworkBasics/Data/ApplicationDbContext.cs

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+using Microsoft.EntityFrameworkCore;
+using System;
+
+namespace EntityFrameworkBasics
+{
+    /// <summary>
+    /// The database representational model for our application
+    /// </summary>
+    public class ApplicationDbContext : DbContext
+    {
+        #region Public Properties
+
+        /// <summary>
+        /// The settings for the application
+        /// </summary>
+        public DbSet<SettingsDataModel> Settings { get; set; }
+
+        #endregion
+
+        #region Constructor
+
+        /// <summary>
+        /// Default constructor, expecting database options passed in
+        /// </summary>
+        /// <param name="options">The database context options</param>
+        public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options) : base(options)
+        {
+
+        }
+
+        #endregion
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            base.OnModelCreating(modelBuilder);
+
+            // Fluent API
+
+            modelBuilder.Entity<SettingsDataModel>().HasIndex(a => a.Name);
+        }
+    }
+}

ASP.Net Core/EntityFrameworkBasics/Data/SettingsDataModel.cs

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+using System.ComponentModel.DataAnnotations;
+
+namespace EntityFrameworkBasics
+{
+    /// <summary>
+    /// Our Settings database table representational model
+    /// </summary>
+    public class SettingsDataModel
+    {
+        /// <summary>
+        /// The unique Id for this entry
+        /// </summary>
+        [Key]
+        public string Id { get; set; }
+
+        /// <summary>
+        /// The settings name
+        /// </summary>
+        /// <remarks>This column is indexed</remarks>
+        [Required]
+        [MaxLength(256)]
+        public string Name { get; set; }
+
+        /// <summary>
+        /// The settings value
+        /// </summary>
+        [Required]
+        [MaxLength(2048)]
+        public string Value { get; set; }
+    }
+}