Express > Express Assembly Classes > LanerBox > LanerBox.OnRemoveAttribute

LanerBox.OnRemoveAttribute

Syntax

OnRemoveAttribute(Sender: Object; Args: ILanerBoxAttributeEventArgs);

Parameters

Sender. The component that generated the event.

Args. Event parameters.

Description

The OnRemoveAttribute event occurs when a column containing values of indicator attributes is removed from the workbook.

Comments

Parameters of this event cannot be changed. Args.Index returns index of the removed attribute.

Example

Executing the example requires a form, the LanerBox component named LanerBox1 on the form and the UiErAnalyzer component that is a data source for LanerBox. A workbook of time series database should be loaded to UiErAnalyzer. The form also contains the Memo component with the Memo1 identifier.

This procedure must be assigned as a handler of the OnRemoveAttribute event for LanerBox.

Sub LanerBox1OnRemoveAttribute(Sender: Object; Args: ILanerBoxAttributeEventArgs);
Var
    Col: Integer;
Begin
    Col := Args.Index + 2;
    Memo1.Lines.Clear;
    Memo1.Lines.Add("Column No. was deleted " + ColCount.ToString);
End Sub LanerBox1OnRemoveAttribute;

After removing a column containing values of indicator attributes, the Memo1 component shows the number of the removed column.