Sdílet prostřednictvím

ApplicationData.LocalSettings Property

  • Reference

Definition

Namespace:
Windows.Storage
Edit

Gets the application settings container in the local app data store.

public:
 property ApplicationDataContainer ^ LocalSettings { ApplicationDataContainer ^ get(); };
ApplicationDataContainer LocalSettings();
public ApplicationDataContainer LocalSettings { get; }
var applicationDataContainer = applicationData.localSettings;
Public ReadOnly Property LocalSettings As ApplicationDataContainer

Property Value

ApplicationDataContainer

The application settings container.

Examples

Use the LocalSettings property to get the settings in an ApplicationDataContainer object. Use the ApplicationDataContainer.Values property to access the settings in the localSettings container. This example creates and reads a setting named exampleSetting.

Call the ApplicationDataContainerSettings.Remove method to delete the exampleSetting setting when you have finished with it.

Note that to access the RoamingSettings, use the same process outlined in the example, except change the occurrences of localSettings to roamingSettings

var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;

// Create a simple setting.
localSettings.Values["exampleSetting"] = "Hello Windows";

// Read data from a simple setting.
Object value = localSettings.Values["exampleSetting"];

if (value == null)
{
    // No data.
}
else
{
    // Access data in value.
}

// Delete a simple setting.
localSettings.Values.Remove("exampleSetting");

Windows::Storage::ApplicationDataContainer localSettings{
    Windows::Storage::ApplicationData::Current().LocalSettings() };

// Create a simple setting.
auto values{ localSettings.Values() };
values.Insert(L"exampleSetting", Windows::Foundation::PropertyValue::CreateString(L"Hello Windows"));

// Read data from a simple setting.
winrt::hstring value{ winrt::unbox_value<winrt::hstring>(values.Lookup(L"exampleSetting")) };

// Access data in value.

// Delete a simple setting.
values.Remove(L"exampleSetting");

ApplicationDataContainer^ localSettings = ApplicationData::Current->LocalSettings;

// Create a simple setting.
auto values = localSettings->Values;
values->Insert("exampleSetting", dynamic_cast<PropertyValue^>(PropertyValue::CreateString("Hello Windows")));

// Read data from a simple setting.
String^ value = safe_cast<String^>(values->Lookup("exampleSetting"));

if (!value)
{
    // No data.
}
else
{
    // Access data in value.
}

// Delete a simple setting.
values->Remove("exampleSetting");

Dim localSettings As Windows.Storage.ApplicationDataContainer = Windows.Storage.ApplicationData.Current.LocalSettings

' Create a simple setting

localSettings.Values("exampleSetting") = "Hello Windows";

' Read data from a simple setting

Dim value As Object = localSettings.Values("exampleSetting")

If value Is Nothing Then
   ' No data
Else
   ' Access data in value
End If

' Delete a simple setting

localSettings.Values.Remove("exampleSetting")

Remarks

For both LocalSettings and RoamingSettings, the name of each setting can be 255 characters in length at most. Each setting can be up to 8K bytes in size and each composite setting can be up to 64K bytes in size.

The Windows Runtime data types are supported for app settings.

Applies to

See also