AppSettingsSection.File 屬性

定義

命名空間:

System.Configuration

組件:

System.Configuration.ConfigurationManager.dll

套件:

System.Configuration.ConfigurationManager v8.0.0

來源:

AppSettingsSection.cs

取得或設定組態檔，這個組態檔提供額外設定或覆寫 appSettings 元素中所指定的設定。

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

屬性值

String

組態檔，提供額外設定或覆寫 appSettings 項目中所指定的設定。

屬性

ConfigurationPropertyAttribute

範例

下列範例會將其他 appSettings 值儲存在外部組態檔中，並將這個檔案的名稱儲存在屬性中 File 。

// 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

另請參閱

• ConfigSource