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ResourceExpressionBuilder Class

  • Reference

Definition

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

Provides code to the page parser for assigning property values on a control.

public ref class ResourceExpressionBuilder : System::Web::Compilation::ExpressionBuilder
public class ResourceExpressionBuilder : System.Web.Compilation.ExpressionBuilder
type ResourceExpressionBuilder = class
    inherit ExpressionBuilder
Public Class ResourceExpressionBuilder
Inherits ExpressionBuilder
Inheritance
Object
ExpressionBuilder
ResourceExpressionBuilder

Examples

The following code example retrieves the default currency from a resource file.

<%@ Page Language="C#" UICulture="auto" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Sales Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        All prices listed in 
        <asp:Literal ID="Literal1" runat="server" 
        Text="<%$ Resources: Financial, Currency %>" />.
    </div>
    </form>
</body>
</html>

<%@ Page Language="VB" UICulture="auto" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Sales Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        All prices listed in 
        <asp:Literal ID="Literal1" runat="server" 
        Text="<%$ Resources: Financial, Currency %>" />.
    </div>
    </form>
</body>
</html>

This code reads the following value from a resource file named Financial.resx in the App_GlobalResources directory.

<data name="Currency"><value xml:space="preserve">US dollars</value></data>

Remarks

The ResourceExpressionBuilder class creates code to retrieve resource values when the page is executed. A resource file typically contains information localized for a particular language or culture.

A resource expression takes the form <%$ Resources: ClassKey, ResourceKey %> within the page. The part of the expression before the colon (:) designates the type of expression builder to use, and the part after the colon signifies the class name and resource key. The preceding expression would retrieve the following value from a file named ClassKey.resx:

<data name="ResourceKey"><value xml:space="preserve">Hello!</value></data>

When the page parser encounters an expression with the Resources prefix, it creates an instance of the ResourceExpressionBuilder class. The ResourceExpressionBuilder class either evaluates the expression or generates code to return a value for the expression when the page is executed.

If the expression is encountered in a page that will be compiled, the ResourceExpressionBuilder object generates code that retrieves the specified value from the resource file. If the expression is encountered in a page that will not be compiled, the ResourceExpressionBuilder object returns the value from the resource file when the page is parsed.

Constructors

ResourceExpressionBuilder()

Initializes a new instance of the ResourceExpressionBuilder class.

Properties

SupportsEvaluate

Returns a value indicating whether an expression can be evaluated in a page that uses the no-compile feature.

Methods

Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
EvaluateExpression(Object, BoundPropertyEntry, Object, ExpressionBuilderContext)

Returns a value from a resource file.
GetCodeExpression(BoundPropertyEntry, Object, ExpressionBuilderContext)

Returns a code expression to evaluate during page execution.
GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ParseExpression(String, Type, ExpressionBuilderContext)

Returns an object that represents the parsed expression.
ParseExpression(String)

Returns an object that represents the parsed expression.
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also