TemplateControl.Eval Method (String, String)

Evaluates a data-binding expression using the specified format string to display the result.

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

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

Parameters

expression

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

format

A .NET Framework format string to apply to the result.

Return Value

A string that results from the evaluation of the data-binding expression and conversion to a string type.

Exception typeCondition

InvalidOperationException

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

ArgumentNullException

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 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

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