ddd

ADO.NETEntityFramework/ADO.NETAndLINQ/0720/0720.csproj

@@ -0,0 +1,182 @@
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ADO.NETEntityFramework/ADO.NETAndLINQ/0720/App.config

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <configSections>
+    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
+    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
+  </configSections>
+  <startup>
+    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
+  </startup>
+  <entityFramework>
+    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />
+    <providers>
+      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />
+    </providers>
+  </entityFramework>
+</configuration>

ADO.NETEntityFramework/ADO.NETAndLINQ/0720/Program.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.EntityFrameworkCore;
+namespace _0720
+{
+    class Program
+    {
+
+        static void Main(string[] args)
+        {
+            using(var db = new MyDbContext())
+            {
+
+                //db.Claims.Add(new Claim() {  Name = "123"});
+                ////db.Inspections.Add(new Inspection() { InspectionID = 2, Name = "456" });
+                ////db.Inspections.Add(new Inspection() { InspectionID = 3, Name = "789" });
+                //db.SaveChanges();
+
+                var entity = db.Inspections.AsNoTracking().First();
+
+                Console.WriteLine(entity.InspectionID + ":" + entity.Name);
+
+                Type typeParameterType = typeof(Inspection);
+                db.Set<Inspection>().Attach(entity);
+
+                db.Entry(Convert.ChangeType(entity, typeParameterType)).Collection("Claim").Load();
+            }
+
+            Console.ReadKey();
+        }
+    }
+    public class MyDbContext : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            optionsBuilder.UseSqlServer(@"Server=(localdb)\mssqllocaldb;user=sa;pwd=wjp1842022$;Database=FirstDatabase;Trusted_Connection=True;");
+        }
+        public DbSet<Claim> Claims { set; get; }
+        public DbSet<Location> Locations { set; get; }
+        public DbSet<Inspection> Inspections { set; get; }
+    }
+    public class Claim
+    {
+        public int ClaimID { set; get; }
+        public string Name { set; get; }
+
+
+        public virtual ICollection<Inspection> Inspections { get; set; }
+        public virtual ICollection<Location> Locations { set; get; }
+    }
+    public class Location
+    {
+        public int LocationID { set; get; }
+
+        public int ClaimID { set; get; }
+        public virtual Claim Claim { get; set; }
+
+        public virtual ICollection<Inspection> Inspections { get; set; }
+    }
+    public class Inspection
+    {
+        public int InspectionID { set; get; }
+        public string Name { get; set; }
+
+        public int ClaimID { set; get; }
+        public int LocationID { set; get; }
+
+        public virtual Claim Claim { get; set; }
+        public virtual Location Location { set; get; }
+    }
+}

ADO.NETEntityFramework/ADO.NETAndLINQ/0720/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("0720")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("0720")]
+[assembly: AssemblyCopyright("Copyright ©  2017")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("55546425-10dc-45af-9877-a836fb9c1149")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]