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AppSettingsExpressionBuilder.EvaluateExpression Method

  • Reference

Definition

Namespace:
System.Web.Compilation
Assembly:
System.Web.dll

Returns a value from the <appSettings> section of the Web.config file.

public:
 override System::Object ^ EvaluateExpression(System::Object ^ target, System::Web::UI::BoundPropertyEntry ^ entry, System::Object ^ parsedData, System::Web::Compilation::ExpressionBuilderContext ^ context);
public override object EvaluateExpression (object target, System.Web.UI.BoundPropertyEntry entry, object parsedData, System.Web.Compilation.ExpressionBuilderContext context);
override this.EvaluateExpression : obj * System.Web.UI.BoundPropertyEntry * obj * System.Web.Compilation.ExpressionBuilderContext -> obj
Public Overrides Function EvaluateExpression (target As Object, entry As BoundPropertyEntry, parsedData As Object, context As ExpressionBuilderContext) As Object

Parameters

target
Object

The object that contains the property entry.

entry
BoundPropertyEntry

The property to which the expression is bound.

parsedData
Object

The object that represents parsed data as returned by ParseExpression(String, Type, ExpressionBuilderContext).

context
ExpressionBuilderContext

Properties for the control or page.

Returns

Object

The Object associated with a key in the <appSettings> section of the Web.config file.

Remarks

This method is called when an expression of the form <%$ AppSettings: someApplicationSetting %> is encountered in a no-compile page. It retrieves the appropriate value from the key/value pairs in the <appSettings> section of the Web.config file. This method overrides EvaluateExpression by calling the GetAppSetting method with the Expression property as the key parameter, the Name property on the PropertyEntry.PropertyInfo property as the propertyName parameter, and the Type of the target parameter as the targetType parameter.

Applies to

See also