Skip to main content

Where I can find SQL generated by Linq-To-SQL

Yesterday I have written a blog post about Where I can find SQL Generated by Entity Framework? and same day I got request from one of the our reader Ramesh that how I can find SQL generated by Linq-To-SQL?. I thought its a good idea to write a blog post to share amongst all who need this instead of reply in comments.  In this post I am going to explain how we can get SQL generated by Linq-To-SQL.

For this post I am going to use same table like following. A customer table with two columns CustomerId and CustomerName.

How to get SQL staement generated by Linq-To-SQL


Now we have already have table to its time to create a Linq-To-SQL dbml file.

How to find SQL Statement from linq-to-sql

Now once our dbml file is ready it’s time to import Customer Table from Server Explorer.

Linq-To-SQLClassGeneration

Now we are ready with Linq-To-SQL dbml file and its time to write some code. I am going write same query I have written for previous post where I can find all the customer name. Here I have used datacontext GetCommand method to get command from the dbml class and then used CommandText property to find SQL statement generated by our Linq-To-SQL query. Following is the code for that.

using System;
using System.Linq;
using System.Data;

namespace LinqToSQL
{
    class Program
    {
        static void Main(string[] args)
        {
            using (CustomerDataContext customerContext = new CustomerDataContext())
            {
                var customerNames = from c in customerContext.Customers
                                    select c.CustomerName;
                string sql = customerContext.GetCommand(customerNames).CommandText;

                Console.WriteLine(sql);
            }
        }
    }
}

Now let’s run this console application to see SQL generated by Linq-To-SQL query and following is the output as expected.

OutPutSQL

That’s it. Hope you like it. Stay tuned for more.

Shout it

kick it on DotNetKicks.com

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…