ConfigurationManager.ConnectionStrings Property

public:
 static property System::Configuration::ConnectionStringSettingsCollection ^ ConnectionStrings { System::Configuration::ConnectionStringSettingsCollection ^ get(); };

public static System.Configuration.ConnectionStringSettingsCollection ConnectionStrings { get; }

static member ConnectionStrings : System.Configuration.ConnectionStringSettingsCollection

Public Shared ReadOnly Property ConnectionStrings As ConnectionStringSettingsCollection

Property Value

The contents of the ConnectionStringsSection object for the current application's default configuration.

Exceptions

Examples

The following example shows how to use a connection string to read data from a database.

using System;
using System.Configuration;
using System.Data.SqlClient;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            ReadProducts();
        }

        static void ReadProducts()
        {
            var connectionString = ConfigurationManager.ConnectionStrings["WingtipToys"].ConnectionString;
            string queryString = "SELECT Id, ProductName FROM dbo.Products;";
            using (var connection = new SqlConnection(connectionString))
            {
                var command = new SqlCommand(queryString, connection);
                connection.Open();
                using (var reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        Console.WriteLine(String.Format("{0}, {1}", reader[0], reader[1]));
                    }
                }
            }
        }
    }
}

Imports System.Configuration
Imports System.Data.SqlClient
Module Module1

    Sub Main()
        ReadProducts()
    End Sub

    Sub ReadProducts()
        Dim connectionString = ConfigurationManager.ConnectionStrings("WingtipToys").ConnectionString
        Dim queryString = "SELECT Id, ProductName FROM dbo.Products;"
        Using connection As New SqlConnection(connectionString)
            Dim command = New SqlCommand(queryString, connection)
            connection.Open()

            Using reader As SqlDataReader = command.ExecuteReader()
                While reader.Read()
                    Console.WriteLine(String.Format("{0}, {1}", reader(0), reader(1)))
                End While
            End Using
        End Using
    End Sub

End Module

Remarks

A ConnectionStringsSection object contains the contents of the configuration file's connectionStrings section.

See also

• ConnectionStringsSection
• ConnectionStringSettingsCollection