System.Configuration Namesp ...


.NET Framework Class Library
ConnectionStringSettingsCollection Class

Contains a collection of ConnectionStringSettings objects.

Namespace:  System.Configuration
Assembly:  System.Configuration (in System.Configuration.dll)
Syntax

Visual Basic (Declaration)
<ConfigurationCollectionAttribute(GetType(ConnectionStringSettings))> _
Public NotInheritable Class ConnectionStringSettingsCollection _
    Inherits ConfigurationElementCollection
Visual Basic (Usage)
Dim instance As ConnectionStringSettingsCollection
C#
[ConfigurationCollectionAttribute(typeof(ConnectionStringSettings))]
public sealed class ConnectionStringSettingsCollection : ConfigurationElementCollection
Visual C++
[ConfigurationCollectionAttribute(typeof(ConnectionStringSettings))]
public ref class ConnectionStringSettingsCollection sealed : public ConfigurationElementCollection
JScript
public final class ConnectionStringSettingsCollection extends ConfigurationElementCollection
Remarks

A ConnectionStringSettingsCollection object contains a collection of ConnectionStringSettings objects. Each ConnectionStringSettings object represents a single entry in the <connectionStrings> configuration-file section.

TopicLocation
How to: Access SQL Server Using Predetermined CredentialsBuilding ASP .NET Web Applications
How to: Access SQL Server Using Predetermined CredentialsBuilding ASP .NET Web Applications
How to: Access SQL Server Using Predetermined CredentialsBuilding ASP .NET Web Applications in Visual Studio
How to: Access SQL Server Using Predetermined CredentialsBuilding ASP .NET Web Applications in Visual Studio
How to: Read Connection Strings from the Web.config FileConfiguring ASP .NET Web Applications
How to: Read Connection Strings from the Web.config FileConfiguring ASP .NET Web Applications
How to: Read Connection Strings from the Web.config FileBuilding ASP .NET Web Applications in Visual Studio
How to: Read Connection Strings from the Web.config FileBuilding ASP .NET Web Applications in Visual Studio
Examples

The following example shows how to access the ConnectionStringSettingsCollection.

Visual Basic
Shared Sub ShowConnectionStrings() 

    ' Get the application configuration file.
    Dim config _
    As System.Configuration.Configuration = _
    ConfigurationManager.OpenExeConfiguration( _
    ConfigurationUserLevel.None)

    ' Get the conectionStrings section.
    Dim csSection _
    As ConnectionStringsSection = _
    config.ConnectionStrings

    Dim i As Integer
    For i = 0 To ConfigurationManager.ConnectionStrings.Count
        Dim cs As ConnectionStringSettings = _
        csSection.ConnectionStrings(i)

        Console.WriteLine( _
        "  Connection String: ""{0}""", cs.ConnectionString)
        Console.WriteLine("#{0}", i)
        Console.WriteLine("  Name: {0}", cs.Name)

        Console.WriteLine( _
        "  Provider Name: {0}", cs.ProviderName)

    Next i

End Sub 'ShowConnectionStrings

C#
static void ShowConnectionStrings()
{
     // Get the application configuration file.
    System.Configuration.Configuration config =
            ConfigurationManager.OpenExeConfiguration(
            ConfigurationUserLevel.None);

    // Get the conectionStrings section.
    ConnectionStringsSection csSection =
        config.ConnectionStrings;

    for (int i = 0; i < 
        ConfigurationManager.ConnectionStrings.Count; i++)
    {
        ConnectionStringSettings cs = 
            csSection.ConnectionStrings[i];

        Console.WriteLine("  Connection String: \"{0}\"",
            cs.ConnectionString);

        Console.WriteLine("#{0}", i);
        Console.WriteLine("  Name: {0}", cs.Name);


        Console.WriteLine("  Provider Name: {0}", 
            cs.ProviderName);

    }

}

The following example is an excerpt from the configuration file used by the previous example.

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <connectionStrings>
    <add name="ConnStr1" connectionString="LocalSqlServer: data source=127.0.0.1;Integrated Security=SSPI;Initial Catalog=aspnetdb"
      providerName="System.Data.SqlClient" />
  </connectionStrings>
</configuration>
Inheritance Hierarchy

System..::.Object
  System.Configuration..::.ConfigurationElement
    System.Configuration..::.ConfigurationElementCollection
      System.Configuration..::.ConnectionStringSettingsCollection
Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0
See Also

Reference

Other Resources

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