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Procedimiento para mostrar comandos de LINQ to SQL

Utilice GetCommand para mostrar comandos SQL y otra información.

Ejemplo

En el ejemplo siguiente, la ventana de la consola muestra el resultado de la consulta, seguido de los comandos SQL que se generan, el tipo de los comandos y el tipo de la conexión.

// using System.Data.Common;
Northwnd db = new Northwnd(@"c:\northwnd.mdf");

var q =
    from cust in db.Customers
    where cust.City == "London"
    select cust;

Console.WriteLine("Customers from London:");
foreach (var z in q)
{
    Console.WriteLine("\t {0}",z.ContactName);
}

DbCommand dc = db.GetCommand(q);
Console.WriteLine("\nCommand Text: \n{0}",dc.CommandText);
Console.WriteLine("\nCommand Type: {0}",dc.CommandType);
Console.WriteLine("\nConnection: {0}",dc.Connection);

Console.ReadLine();
' Imports System.Data.Common

Dim db As New Northwnd("c:\northwnd.mdf")

Dim q = _
From cust In db.Customers _
Where cust.City = "London" _
Select cust

Console.WriteLine("Customers from London:")
For Each z As Customer In q
    Console.WriteLine(vbTab & z.ContactName)
Next

Dim dc As DbCommand = db.GetCommand(q)
Console.WriteLine(vbNewLine & "Command Text: " & vbNewLine & dc.CommandText)
Console.WriteLine(vbNewLine & "Command Type: {0}", dc.CommandType)
Console.WriteLine(vbNewLine & "Connection: {0}", dc.Connection)

Console.ReadLine()

El resultado se muestra de la manera siguiente:

Customers from London:  
    Thomas Hardy  
    Victoria Ashworth  
    Elizabeth Brown  
    Ann Devon  
    Simon Crowther  
    Marie Bertrand  
    Hari Kumar  
    Dominique Perrier  
Command Text:  
SELECT [t0].[CustomerID], [t0].[CompanyName], [t0].[ContactName], [t0].[ContactT  
itle], [t0].[Address], [t0].[City], [t0].[Region], [t0].[PostalCode], [t0].[Coun  
try], [t0].[Phone], [t0].[Fax]  
FROM [dbo].[Customers] AS [t0]  
WHERE [t0].[City] = @p0  
  
Command Type: Text  
  
Connection: System.Data.SqlClient.SqlConnection  

Consulte también