IChartSelectedSeries.IsEmpty

Fore Syntax

IsEmpty: Boolean;

Fore.NET Syntax

IsEmpty: System.Boolean;

Description

The IsEmpty property returns whether the elements are present in the collection.

Fore Example

Executing the example requires a form, the Button1 button located on this form, the ChartBox component and UiChart component used as a data source.

Sub Button1OnClick(Sender: Object; Args: IMouseEventArgs);
Var
    SelectedSeries: IChartSelectedSeries;
Begin
    SelectedSeries:= UiChart1.Chart.SelectedSeries;
    Debug.WriteLine(SelectedSeries.IsEmpty);
End Sub Button1OnClick;

After executing the example. the console displays the result that shows whether elements are present or absent in the collection.

Fore.NET Example

Executing the example requires a form, the Button1 button located on this form, the ChartBoxNet component and UiChartNet component used as a data source.

Imports Prognoz.Platform.Forms.Net;
Imports Prognoz.Platform.Interop.Metabase;
Imports Prognoz.Platform.Interop.Chart;

...

Private Sub button1_Click( sender : System.Object; e : System.EventArgs );
Var
   SelectedSeries: IChartSelectedSeries;
Begin
    SelectedSeries:= UiChartNet1.ChartUi.Chart.SelectedSeries;
    System.Diagnostics.Debug.WriteLine(SelectedSeries.IsEmpty);
End Sub button1_Click;

After executing the example. the console displays the result that shows whether elements are present or absent in the collection.