ConfigurationManager.ConnectionStrings Vlastnost

Definice

Obor názvů:

System.Configuration

Sestavení:

System.Configuration.ConfigurationManager.dll

Zdroj:

ConfigurationManager.cs

Získá ConnectionStringsSection data pro výchozí konfiguraci aktuální aplikace.

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

Hodnota vlastnosti

ConnectionStringSettingsCollection

Obsah objektu ConnectionStringsSection pro výchozí konfiguraci aktuální aplikace.

Výjimky

ConfigurationErrorsException

Nelze načíst objekt ConnectionStringSettingsCollection.

Příklady

Následující příklad ukazuje, jak pomocí připojovacího řetězce číst data z databáze.

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

Poznámky

Objekt ConnectionStringsSection obsahuje obsah oddílu connectionStrings konfiguračního souboru.

Viz také

• ConnectionStringsSection
• ConnectionStringSettingsCollection