Preferences.ContainsKey Method

Definition

Namespace:

Microsoft.Maui.Storage

Assembly:

Microsoft.Maui.Essentials.dll

Overloads

ContainsKey(String)	Checks the existence of a given key.
ContainsKey(String, String)	Checks the existence of a given key.

ContainsKey(String)

Source:

Preferences.shared.cs

Checks the existence of a given key.

public:
 static bool ContainsKey(System::String ^ key);

public static bool ContainsKey (string key);

static member ContainsKey : string -> bool

Public Shared Function ContainsKey (key As String) As Boolean

Parameters

key

String

The key to check.

Returns

Boolean

true if the key exists in the preferences, otherwise false.

ContainsKey(String, String)

Source:

Preferences.shared.cs

Checks the existence of a given key.

public:
 static bool ContainsKey(System::String ^ key, System::String ^ sharedName);

public static bool ContainsKey (string key, string? sharedName);

static member ContainsKey : string * string -> bool

Public Shared Function ContainsKey (key As String, sharedName As String) As Boolean

Parameters

key

String

Preference key.

sharedName

String

Shared container name.

Returns

Boolean

Returns true if the key exists.