ExpressionBinding.EventName Property

Specifies the name of the event to evaluate the expression binding within.

Namespace: DevExpress.XtraReports.UI

Assembly: DevExpress.XtraReports.v20.2.dll

NuGet Packages: DevExpress.Reporting.Core, DevExpress.WindowsDesktop.Reporting.Core

Declaration

C#

[DefaultValue("")]
public string EventName { get; set; }

VB.NET

<DefaultValue("")>
Public Property EventName As String

Property Value

Type	Default	Description
String	String.Empty	The event name.

Remarks

You can create a binding expression to specify a control or parameter property. Create a ExpressionBinding object and set its properties:

• EventName - the event handler that evaluates the expression. Set this property to BeforePrint or PrintOnPage. If you omit this property, the expression is evaluated in the BeforePrint event.
• PropertyName - the property that the expression applies to.
• Expression - the expression.

See Data Binding Modes for more information.

The following code example illustrates how to specify an expression to a control’s property:

C#

// Create a label control.
XRLabel label = new XRLabel();
// Specify an expression that sets the label's Text to the current date. The expression is rendered within the BeforePrint event.
XRLabel.ExpressionBindings.Add (new ExpressionBinding("Text", "TODAY()"));
// Specify an expression that is rendered within the PrintOnPage event.
XRLabel.ExpressionBindings.Add (new ExpressionBinding("PrintOnPage","Font.Bold","true"));

VB.NET

' Create a label control.
Dim label As New XRLabel()
' Specify an expression that sets the label's Text to the current date. The expression is rendered within the BeforePrint event.
XRLabel.ExpressionBindings.Add(New ExpressionBinding("Text", "TODAY()"))
' Specify an expression that is rendered within the PrintOnPage event.
XRLabel.ExpressionBindings.Add(New ExpressionBinding("PrintOnPage","Font.Bold","true"))