AppSettingsReader.GetValue(String, Type) AppSettingsReader.GetValue(String, Type) AppSettingsReader.GetValue(String, Type) Method

Definition

Gets the value for a specified key from the AppSettings property and returns an object of the specified type containing the value from the configuration.

public:
 System::Object ^ GetValue(System::String ^ key, Type ^ type);
public object GetValue (string key, Type type);
member this.GetValue : string * Type -> obj
Parameters
key
String String String

The key for which to get the value.

type
Type Type Type

The type of the object to return.

Returns

The value of the specified key.

Exceptions

key does not exist in the <appSettings> configuration section.

- or -

The value in the <appSettings> configuration section for key is not of type type.

Examples

The following example shows how to use the GetValue method to retrieve the value for each key in the <appSettings> section of the configuration file.

static void DisplayAppSettings()
{

    try
    {

        AppSettingsReader reader = new AppSettingsReader();


        NameValueCollection appSettings = ConfigurationManager.AppSettings;

        for (int i = 0; i < appSettings.Count; i++)
        {
            Console.WriteLine("Key : {0} Value: {1}",
              appSettings.GetKey(i), appSettings[i]);
        }

    }
    catch (ConfigurationErrorsException e)
    {
        Console.WriteLine("[DisplayAppSettings: {0}]", e.ToString());
    }

}
Private Shared Sub DisplayAppSettings()

    Try

        Dim reader As New System.Configuration.AppSettingsReader()


        Dim appSettings As NameValueCollection = ConfigurationManager.AppSettings

        For i As Integer = 0 To appSettings.Count - 1
            Console.WriteLine("Key : {0} Value: {1}", appSettings.GetKey(i), appSettings(i))
        Next i

    Catch e As ConfigurationErrorsException
        Console.WriteLine("[DisplayAppSettings: {0}]", e.ToString())
    End Try

End Sub

Applies to

See Also