BeforeCalculatePending Event (UltraCalculatorDropDown)

Fires on before Immediate Calculation, allowing user to cancel default calculation and or change the values

Syntax

Visual Basic

'Declaration
 
Public Event BeforeCalculatePending As BeforeCalculatePendingEventHandler

C#

public event BeforeCalculatePendingEventHandler BeforeCalculatePending

Event Data

The event handler receives an argument of type OnCalculatePendingEventArgs containing data related to this event. The following OnCalculatePendingEventArgs properties provide information specific to this event.

Property	Description
Cancel (Inherited from System.ComponentModel.CancelEventArgs)
CurrentValue (Inherited from Infragistics.Win.UltraWinEditors.UltraWinCalc.OnCalculateImmediateEventArgs)	Gets/Sets CurrentValue
CurrentValueDecimal (Inherited from Infragistics.Win.UltraWinEditors.UltraWinCalc.OnCalculateImmediateEventArgs)	Get/Sets the current value as decimal.
Operation (Inherited from Infragistics.Win.UltraWinEditors.UltraWinCalc.OnCalculateImmediateEventArgs)	Operation string, this value may be changed by the user and handled by the user.
PreviousValue	Gets/Sets CurrentValue
PreviousValueDecimal	Get/Sets the current value as decimal.

Example

This event occurs before a pending calculation has taken place. User clicks the = button for example. The event itself is cancellable.

For an overview of how to handle events in Visual Basic or Visual C#, see Event Handlers in Visual Basic and Visual C#. For specific information and code examples illustrating how to consume events in your application, see Consuming Events in the .NET Framework Developer's Guide.

Visual Basic

Private Sub UltraCalculatorDropDown1_BeforeCalculatePending(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinEditors.UltraWinCalc.OnCalculatePendingEventArgs) Handles UltraCalculatorDropDown1.BeforeCalculatePending
    
    ' This event occurs before a pending calculation has taken place.
    ' User clicks the = button for example. The 
    ' event itself is cancellable.
    Debug.WriteLine("BeforeCalculatePending: Cancel = " + e.Cancel.ToString())
    Debug.WriteLine(String.Format("Params: Operation {0}, Current Value {1}, Previous Value {2}", e.Operation, e.CurrentValue, e.PreviousValue))

End Sub

C#

using System.Diagnostics;

	private void ultraCalculatorDropDown1_BeforeCalculatePending(object sender, Infragistics.Win.UltraWinEditors.UltraWinCalc.OnCalculatePendingEventArgs e)
	{
		
		// This event occurs before a pending calculation has taken place.
		// User clicks the = button for example. The 
		// event itself is cancellable.
		Debug.WriteLine("BeforeCalculatePending: Cancel = " + e.Cancel.ToString());
		Debug.WriteLine(string.Format("Params: Operation {0}, Current Value {1}, Previous Value {2}",e.Operation , e.CurrentValue, e.PreviousValue));

	}

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2