Application.ProjectBeforeAssignmentChange event (Project)

Occurs before the user changes the value of an assignment field.

Syntax

expression. ProjectBeforeAssignmentChange( _asg_, _Field_, _NewVal_, _Cancel_ )

expression A variable that represents an Application object.

Parameters

Name	Required/Optional	Data type	Description
asg	Required	Assignment	The assignment whose field is being changed.
Field	Required	PjAssignmentField	The field being changed. If more than one field is changed by the user, the event is triggered for each field changed. Can be one of the following PjAssignmentField constants.
NewVal	Required	Variant	The new value for the field specified with Field.
Cancel	Required	Boolean	False when the event occurs. If the event procedure sets this argument to True, the value for the field specified with Field is not changed.

Remarks

Project events don't occur when the project is embedded in another document or application.

The ProjectBeforeAssignmentChange event doesn't occur when timescaled data changes, when an entire resource or task row is pasted, when an assignment is changed as the result of a drag-and-drop operation in the Resource Usage view, during resource pool operations, when inserting or removing a subproject, or when changes have been made using a custom form. For more information and sample code for creating and testing an event handler, see Using Events with Application and Project Objects.

Example

The following example examines new resource assignments and cancels them if they are for the specified resource. This example requires a new class module and additional code for it to have an effect.

Private Sub App_ProjectBeforeAssignmentChange(ByVal asg As Assignment, ByVal Field As PjAssignmentField, _ 
    ByVal NewVal As Variant, Cancel As Boolean) 
 
    If Field = pjAssignmentResourceName And NewVal = "Lisa Jones" Then 
        MsgBox "Lisa is no longer available for assignment!" 
        Cancel = True 
    End If 
End Sub

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