Entity Framework Connection string

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Data.Entity;namespacecodefirstnewdatabasesample{ Public classBlog { Public intBlogId {Get;Set; }  Public stringName {Get;Set; }  Public VirtualList<post> Posts {Get;Set; } }     Public classPost { Public intPostID {Get;Set; }  Public stringTitle {Get;Set; }  Public stringContent {Get;Set; }  Public intBlogId {Get;Set; }  Public VirtualBlog Blog {Get;Set; } }     Public classBloggingcontext:dbcontext { PublicBloggingcontext ():Base("Name=blogcontext") { }          PublicDbset<blog> Blogs {Get;Set; }  PublicDbset<post> Posts {Get;Set; } }  classProgram {Static voidMain (string[] args) {            using(vardb =NewBloggingcontext ()) {                //Create and save a new BlogConsole.Write ("Enter a name for a new Blog:"); varName =Console.ReadLine (); varBlog =NewBlog {Name =name}; Db.                Blogs.add (blog); Db.                SaveChanges (); //Display all Blogs from the database                varquery = fromBinchdb. Blogs byB.nameSelectb; Console.WriteLine ("All blogs in the database:"); foreach(varIteminchquery) {Console.WriteLine (item.                Name); } Console.WriteLine ("Press any key to exit ...");            Console.readkey (); }     } }}

Add a service-based database

 Public bloggingcontext ()             Base ("name=blogcontext") {}  //strings Attached

Or

 Public bloggingcontext ()             Base ("blogcontext") {}  //  strings attached

or wait.

App. Config Add content

  <connectionStrings>    <add name="blogcontext" connectionstring= " Data source= (LocalDB) \v11.0; Attachdbfilename=d:\schoolwork\ software \ Database Connection \codefirstnewdatabasesample\codefirstnewdatabasesample\blogdatamdf.mdf ; Integrated security=true"      providerName="System.Data.SqlClient " />  </connectionStrings>

String source

Entity Framework Connection string