Check LINQ query against SQL Server database

Question

Is there any way to in .NET to see what LINQ query against database we are firing? For eg. I am wring a query in LINQ and I want to see that what SQL query is firing to communicate with database.

Is there any Visual Studio window or any other way?

Answer 1

Are you looking for something like this

var context = new MyContext();
context.Database.Log = s => Debug.WriteLine(s);

Then whenever a query is executed, you'll see an output like :

var customers = context.Customers.ToList();

Opened connection at 30-3-2015 13:48:03 +02:00

SELECT [Extent1].[Guid] AS [Guid],
[Extent1].[FirstName] AS [FirstName],
[Extent1].[LastName] AS [LastName],
[Extent1].[Email] AS [Email],
[Extent1].[Created] AS [Created]
FROM [dbo].[Customer] AS [Extent1]

-- Executing at 30-3-2015 13:48:03 +02:00

-- Completed in 0 ms with result: SqlDataReader

Closed connection at 30-3-2015 13:48:03 +02:00

Answer 2

You can use SQL Profiler to see how the LINQ expression is translated into SQL statement.