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SqlConnectionStringBuilder.IntegratedSecurity Property

Gets or sets a Boolean value that indicates whether User ID and Password are specified in the connection (when false) or whether the current Windows account credentials are used for authentication (when true).

Namespace:  System.Data.SqlClient
Assembly:  System.Data (in System.Data.dll)

public bool IntegratedSecurity { get; set; }

Property Value

Type: System.Boolean
The value of the IntegratedSecurity property, or false if none has been supplied.

This property corresponds to the "Integrated Security" and "trusted_connection" keys within the connection string.

The following example converts an existing connection string from using SQL Server Authentication to using integrated security. The example does its work by removing the user name and password from the connection string and then setting the IntegratedSecurity property of the SqlConnectionStringBuilder object.


This example includes a password to demonstrate how SqlConnectionStringBuilder works with connection strings. In your applications, we recommend that you use Windows Authentication. If you must use a password, do not include a hard-coded password in your application.

using System.Data.SqlClient;

class Program
    static void Main()
            string connectString =
                "Data Source=(local);User ID=ab;Password=MyPassword;" +
                "Initial Catalog=AdventureWorks";

            SqlConnectionStringBuilder builder = 
                new SqlConnectionStringBuilder(connectString);
            Console.WriteLine("Original: " + builder.ConnectionString);

            // Use the Remove method 
            // in order to reset the user ID and password back to their 
            // default (empty string) values. Simply setting the  
            // associated property values to an empty string won't 
            // remove them from the connection string; you must 
            // call the Remove method.
            builder.Remove("User ID");

            // Turn on integrated security:
            builder.IntegratedSecurity = true;

            Console.WriteLine("Modified: " + builder.ConnectionString);

            using (SqlConnection connection = 
                       new SqlConnection(builder.ConnectionString))
                // Now use the open connection.
                Console.WriteLine("Database = " + connection.Database);

        catch (Exception ex)

        Console.WriteLine("Press any key to finish.");

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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