AppSettingsSection.File Propriedade

Definição

Namespace:

System.Configuration

Assembly:

System.Configuration.ConfigurationManager.dll

Pacote:

System.Configuration.ConfigurationManager v8.0.0

Origem:

AppSettingsSection.cs

Obtém ou define um arquivo de configuração que fornece configurações adicionais ou substitui as configurações especificadas no elemento appSettings.

public:
 property System::String ^ File { System::String ^ get(); void set(System::String ^ value); };

[System.Configuration.ConfigurationProperty("file", DefaultValue="")]
public string File { get; set; }

[<System.Configuration.ConfigurationProperty("file", DefaultValue="")>]
member this.File : string with get, set

Public Property File As String

Valor da propriedade

String

Um arquivo de configuração que fornece configurações adicionais ou substitui as configurações especificadas no elemento appSettings.

Atributos

ConfigurationPropertyAttribute

Exemplos

O exemplo a File seguir armazena valores adicionais appSettings em um arquivo de configuração externo e salva o nome desse arquivo na propriedade .

// This function shows how to use the File property of the
// appSettings section.
// The File property is used to specify an auxiliary 
// configuration file.
// Usually you create an auxiliary file off-line to store 
// additional settings that you can modify as needed without
// causing an application restart,as in the case of a Web 
// application.
// These settings are then added to the ones defined in the
// application configuration file.
static void  IntializeConfigurationFile()
{
    // Create a set of unique key/value pairs to store in
    // the appSettings section of an auxiliary configuration
    // file.
    string time1 = String.Concat(DateTime.Now.ToLongDateString(),
                           " ", DateTime.Now.ToLongTimeString());

    string time2 = String.Concat(DateTime.Now.ToLongDateString(),
                           " ", new DateTime(2009, 06, 30).ToLongTimeString());
   
    string[] buffer = {"<appSettings>",
    "<add key='AuxAppStg0' value='" + time1 + "'/>", 
    "<add key='AuxAppStg1' value='" + time2 + "'/>",
    "</appSettings>"};

    // Create an auxiliary configuration file and store the
    // appSettings defined before.
    // Note creating a file at run-time is just for demo 
    // purposes to run this example.
    File.WriteAllLines("auxiliaryFile.config", buffer);
    
    // Get the current configuration associated
    // with the application.
    System.Configuration.Configuration config =
       ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);

    // Associate the auxiliary with the default
    // configuration file. 
    System.Configuration.AppSettingsSection appSettings = config.AppSettings;
    appSettings.File = "auxiliaryFile.config";
    
    // Save the configuration file.
    config.Save(ConfigurationSaveMode.Modified);

    // Force a reload in memory of the 
    // changed section.
    ConfigurationManager.RefreshSection("appSettings");
}

' This function shows how to use the File property of the
' appSettings section.
' The File property is used to specify an auxiliary 
' configuration file.
' Usually you create an auxiliary file off-line to store 
' additional settings that you can modify as needed without
' causing an application restart,as in the case of a Web 
' application.
' These settings are then added to the ones defined in the
' application configuration file.
Private Shared Sub IntializeConfigurationFile()
    ' Create a set of unique key/value pairs to store in
    ' the appSettings section of an auxiliary configuration
    ' file.
    Dim time1 As String = String.Concat(Date.Now.ToLongDateString(), " ", Date.Now.ToLongTimeString())

    Dim time2 As String = String.Concat(Date.Now.ToLongDateString(), " ", New Date(2009, 6, 30).ToLongTimeString())

    Dim buffer() As String = {"<appSettings>", "<add key='AuxAppStg0' value='" & time1 & "'/>", "<add key='AuxAppStg1' value='" & time2 & "'/>", "</appSettings>"}

    ' Create an auxiliary configuration file and store the
    ' appSettings defined before.
    ' Note creating a file at run-time is just for demo 
    ' purposes to run this example.
    File.WriteAllLines("auxiliaryFile.config", buffer)

    ' Get the current configuration associated
    ' with the application.
    Dim config As System.Configuration.Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None)

    ' Associate the auxiliary with the default
    ' configuration file. 
    Dim appSettings As System.Configuration.AppSettingsSection = config.AppSettings
    appSettings.File = "auxiliaryFile.config"

    ' Save the configuration file.
    config.Save(ConfigurationSaveMode.Modified)

    ' Force a reload in memory of the 
    ' changed section.
    ConfigurationManager.RefreshSection("appSettings")

End Sub

' This function shows how to use the File property of the
' appSettings section.
' The File property is used to specify an auxiliary 
' configuration file.
' Usually you create an auxiliary file off-line to store 
' additional settings that you can modify as needed without
' causing an application restart,as in the case of a Web 
' application.
' These settings are then added to the ones defined in the
' application configuration file.
Private Shared Sub IntializeConfigurationFile()
    ' Create a set of unique key/value pairs to store in
    ' the appSettings section of an auxiliary configuration
    ' file.
    Dim time1 As String = String.Concat(Date.Now.ToLongDateString(), " ", Date.Now.ToLongTimeString())

    Dim time2 As String = String.Concat(Date.Now.ToLongDateString(), " ", New Date(2009, 6, 30).ToLongTimeString())

    Dim buffer() As String = {"<appSettings>", "<add key='AuxAppStg0' value='" & time1 & "'/>", "<add key='AuxAppStg1' value='" & time2 & "'/>", "</appSettings>"}

    ' Create an auxiliary configuration file and store the
    ' appSettings defined before.
    ' Note creating a file at run-time is just for demo 
    ' purposes to run this example.
    File.WriteAllLines("auxiliaryFile.config", buffer)

    ' Get the current configuration associated
    ' with the application.
    Dim config As System.Configuration.Configuration = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None)

    ' Associate the auxiliary with the default
    ' configuration file. 
    Dim appSettings As System.Configuration.AppSettingsSection = config.AppSettings
    appSettings.File = "auxiliaryFile.config"

    ' Save the configuration file.
    config.Save(ConfigurationSaveMode.Modified)

    ' Force a reload in memory of the 
    ' changed section.
    ConfigurationManager.RefreshSection("appSettings")

End Sub

Confira também

• ConfigSource