TemplateControl.Eval Method (String)

Evaluates a data-binding expression.

Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)

protected internal Object Eval (
	string expression
protected Object Eval (
	String expression
protected internal function Eval (
	expression : String
) : Object
Not applicable.



The navigation path from the container to the public property value to place in the bound control property.

Return Value

An object that results from the evaluation of the data-binding expression.

Exception typeCondition


The data-binding method can be used only for controls contained on a Page.


expression is a null reference (Nothing in Visual Basic).

- or -

expression is an empty string ("").

The value of expression must evaluate to a public property.

The Eval method calls the DataBinder.Eval method using the GetDataItem method to resolve the object reference that the expression is evaluated against.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0