AppSettingsSection.File Property
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Gets or sets a configuration file that provides additional settings or overrides the settings specified in the appSettings
element.
public:
property System::String ^ File { System::String ^ get(); void set(System::String ^ value); };
[System.Configuration.ConfigurationProperty("file", DefaultValue="")]
public string File { get; set; }
public string File { get; set; }
[<System.Configuration.ConfigurationProperty("file", DefaultValue="")>]
member this.File : string with get, set
member this.File : string with get, set
Public Property File As String
A configuration file that provides additional settings or overrides the settings specified in the appSettings
element.
- Attributes
The following example stores additional appSettings
values in an external configuration file and saves the name of this file in the File property.
// 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
Product | Versions |
---|---|
.NET | 8 (package-provided), 9 (package-provided) |
.NET Framework | 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7 (package-provided), 4.7, 4.7.1 (package-provided), 4.7.1, 4.7.2 (package-provided), 4.7.2, 4.8 (package-provided), 4.8, 4.8.1 |
.NET Standard | 2.0 (package-provided) |
Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9 |
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