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ExpressionBuilder::EvaluateExpression Method

When overridden in a derived class, returns an object that represents an evaluated expression.

Namespace:  System.Web.Compilation
Assembly:  System.Web (in System.Web.dll)

public:
virtual Object^ EvaluateExpression(
	Object^ target, 
	BoundPropertyEntry^ entry, 
	Object^ parsedData, 
	ExpressionBuilderContext^ context
)

Parameters

target
Type: System::Object

The object containing the expression.

entry
Type: System.Web.UI::BoundPropertyEntry

The object that represents information about the property bound to by the expression.

parsedData
Type: System::Object

The object containing parsed data as returned by ParseExpression.

context
Type: System.Web.Compilation::ExpressionBuilderContext

Contextual information for the evaluation of the expression.

Return Value

Type: System::Object
An object that represents the evaluated expression; otherwise, nullptr if the inheritor does not implement EvaluateExpression.

If you want your ExpressionBuilder object to be active on a page that supports the no-compile feature, you can override the EvaluateExpression method and the SupportsEvaluate property. The EvaluateExpression method should return the evaluation of the current expression.

Notes to Inheritors:

If you override the EvaluateExpression method, you must also override the SupportsEvaluate property.

The following code example demonstrates how to use the overridden EvaluateExpression method to return an evaluated expression.

No code example is currently available or this language may not be supported.

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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