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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
)

Parameters

expression
Type: System.String

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

Return Value

Type: System.Object
An object that results from the evaluation of the data-binding expression.

ExceptionCondition
InvalidOperationException

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

ArgumentNullException

expression is null.

- 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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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