ASPxClientReportDesigner.PreviewEditingFieldChanged Event

Occurs each time an editing field’s value changes in Print Preview.

Namespace: DevExpress.XtraReports.Web.Scripts

Assembly: DevExpress.XtraReports.v18.2.Web.Scripts.dll

Declaration

C#

public event ASPxClientWebDocumentViewerEditingFieldChangedEventHandler PreviewEditingFieldChanged

VB.NET

Public Event PreviewEditingFieldChanged As ASPxClientWebDocumentViewerEditingFieldChangedEventHandler

Event Data

The PreviewEditingFieldChanged event's data class is ASPxClientWebDocumentViewerEditingFieldChangedEventArgs. The following properties provide information specific to this event:

Property	Description
Field	Gets an editing field whose value has been changed.
NewValue	Provides access to a new value of an editing field.
OldValue	Provides access to a previous value of an editing field.

Remarks

Each time the current field value changes, the PreviewEditingFieldChanged event occurs, allowing you to respond to this action (for instance, validate input data or format the edited value).

The example below demonstrates how to change an editing field’s value to the previous value if the new value does not meet the required conditions.

ASPX

<script type="text/javascript" id="script">
    function previewEditingFieldChanged(s, e) {
        if ((e.Field.id() === "UnitsInStock") && (e.NewValue > 100))
            e.NewValue = e.OldValue;
    }
</script>

<dx:ASPxReportDesigner ID="ASPxReportDesigner1" runat="server">      
    <ClientSideEvents PreviewEditingFieldChanged="previewEditingFieldChanged"/>  
</dx:ASPxReportDesigner>