Skip to main content

Recent updates to C# 6.0 syntax with new version of Visual Studio 2015 CTP

This blog post is part of C# 6.0 Features Series.
Recently, Microsoft has announced new version of Visual Studio 2015 and I have downloaded it. At the same time I was checking what’s new in Visual Studio 2015 CTP newer version and and I have found that suddenly my c# 6.0 new features solutions  stopped working.

The first problem it got is with static class using features. Following was my code.
using System.Console;

namespace StaticClassUsing
{
    class Program
    {
        static void Main(string[] args)
        {
            WriteLine("With using statement");
        }
    }
}

Now when you run this it was giving error like following.

Error

So created a stack overflow question at following

http://stackoverflow.com/questions/28123349/using-statement-with-static-class-is-not-working-in-visual-studio-2015-ctp

Thanks to answer from user HighCore I have found that there is a issue with latest change in syntax and IDE support as following Commit.

https://github.com/dotnet/roslyn/commit/b49f841bdeeb0b620240d2435f5a0665012f6fce

And now my syntax looks like following.
using static System.Console;

namespace StaticClassUsing
{
     class Program
     {
         static void Main(string[] args)
         {
            WriteLine("With using statement");
         }
     }
}

If you see the code, You can see now they have static keyword in using statement.

Same way, There is another change in String Interpolation. Earlier the syntax was looking like following.
using System;
namespace StringInterpolation
{
      class Program
      {
           static void Main(string[] args)
           {
              string name = "Jalpesh Vadgama";

              //Old way of string concentaionation 
              Console.WriteLine("My name is" + name);
              Console.WriteLine("My name is {0}", name);

              //New way of doing this
              Console.WriteLine("My name is \{name}");
            }
       }
}


Now It’s look like following.
using System;
namespace StringInterpolation
{
     class Program
     {
          static void Main(string[] args)
          {
              string name = "Jalpesh Vadgama";

              //Old way of string concentaionation 
              Console.WriteLine("My name is" + name);
              Console.WriteLine("My name is {0}", name);

              //New way of doing this
              Console.WriteLine("My name is {name}");
          }
      }
}
If you see both code carefully now they have removed “\” as it was confusing with escape sequence. I have also updated my blog post and my repository at github at following location.

https://github.com/dotnetjalps/Csharp6NewFeatures

Hope you like it. Stay tuned for more!

Comments

Popular posts from this blog

How to create Rest API(Web API) with ASP.NET Core 1.0

Recently Microsoft has released ASP.NET Core 1.0 RC2, I am getting lots of request from readers that about creating Web API. So I thought it will be a good idea to write a blog post about how to create Rest API(Web API) with ASP.NET Core 1.0.

So let’s get started via creating an ASP.NET Core 1.0 Web Application like following.



Once you click on ASP.NET Web Application, It will ask whether you need to create Web Application or Web API application. We are going to Web API so I am going to select Web API Application like following. Please note that in ASP.NET Core 1.0 there is no separate libraries or DLLs required for creating web APIs. This is just a project template.



Now once you click on OK It will create a Web API application with default values controller and program.cs.  As you know Program.cs is now starting point for the ASP.NET Core 1.0 application so It contains all the required configuration and startup items. Following is a code for that.
using System.IO; using Microsoft.Asp…

How to use migration with Entity Framework Core

Entity framework core is  the lightweight, extensible and cross-platform version of Entity Framework. Before some time, Microsoft has Released a new version of Entity Framework RC2. I have written a couple of blog post about Entity framework code first migration earlier for Entity framework 6.0. So there was a couple of request coming for writing a blog post about Entity Framework Core RC2 migration. So I thought it will be a good idea to give an overview how database migration works in Entity Framework Core RC2. This post will cover a basic scenario where we are going to create the database with existing ASP.NET Identity migration and then we are going to create a new model and have that migration applied in the database.

How to use Entity Framework Migrations: Let’s get started, To demonstrate entity framework core migrations, I am going to create a sample asp.net core web application like following.



Once we select asp.net core application it will appear the following dialog.



Now w…

Solution: gulp is not recognized as internal or external command- Visual Studio

Recently, After Upgrading to the newer version of Gulp, I was getting this error.  After doing lots of  finding online and in my system I was able to figure out that Modules like Gulp does not installed to the path. So when you try to run it from the command line it was showing below error.
gulp is not recognized as internal or external command How to solve : gulp is not recognized as internal or external command To solve this error we just need to create a new environment variable and set the NPM modules path there.

To create an environment variable,  Right click My Computer/ This Pc and click on properties.  It will open following windows.



Go to Advance System Settings and it will open system properties windows like below.



Click on Environment Variables it will open an environment and system variables windows like below.



Click on new System variable and put NODE_PATH in system variable name and %AppData%\npm\node_modules into the variable value like below.



Click on Ok. That’s it. N…