This topic has not yet been rated Rate this topic

TemplateControl.Eval Method (String, String)

.NET Framework 4

Other Versions

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)

Syntax

C++

Copy

protected internal string Eval(
	string expression,
	string format
)

Parameters

expression: Type: System.String
The navigation path from the container to the public property value to place in the bound control property.

format: Type: System.String
A .NET Framework format string to apply to the result.

Return Value

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

Exceptions

Exception	Condition
InvalidOperationException	The data-binding method can only be used for controls contained on a Page.
ArgumentNullException	expression is Nothing. - or - expression is an empty string ("").

Exception

Condition

InvalidOperationException

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

ArgumentNullException

expression is Nothing.

- or -

expression is an empty string ("").

Remarks

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.

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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