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<?xml version="1.0" encoding="utf-8"?>
<Type Name="AppSettingsExpressionBuilder" FullName="System.Web.Compilation.AppSettingsExpressionBuilder">
<TypeSignature Language="C#" Value="public class AppSettingsExpressionBuilder : System.Web.Compilation.ExpressionBuilder" />
<AssemblyInfo>
<AssemblyName>System.Web</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Base>
<BaseTypeName>System.Web.Compilation.ExpressionBuilder</BaseTypeName>
</Base>
<Interfaces />
<Attributes>
<Attribute>
<AttributeName>System.Web.Compilation.ExpressionPrefix("AppSettings")</AttributeName>
</Attribute>
<Attribute>
<AttributeName>System.Web.Compilation.ExpressionEditor("System.Web.UI.Design.AppSettingsExpressionEditor, System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")</AttributeName>
</Attribute>
</Attributes>
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="T:System.Web.Compilation.AppSettingsExpressionBuilder" /> class provides access to values in the <appSettings> section of the Web.config file. The <appSettings> section of the Web.config file contains application-specific values in key/value pairs. </para>
<para>An application value is retrieved by assigning an expression of the form</para>
<para><%$ AppSettings: appSettingsKey %></para>
<para>to a property in a control declaration. The part of the expression before the colon (:) designates the type of expression to be retrieved, and the part after the colon signifies the key. The preceding expression would retrieve the following value from the Web.config file.</para>
<para><appSettings></para>
<para> <add key="appSettingsKey" value="appSettingsValue"/></para>
<para></appSettings></para>
<para>When the page parser encounters an expression with the AppSettings prefix, it creates an instance of the <see cref="T:System.Web.Compilation.AppSettingsExpressionBuilder" /> class to handle the expression. </para>
<para>If the expression is encountered in a page that will be compiled, the <see cref="T:System.Web.Compilation.AppSettingsExpressionBuilder" /> object generates code to retrieve the specified value from the Web.config file. This code is executed during the execution of the generated page class. If the expression is encountered in a page that will not be compiled, the <see cref="T:System.Web.Compilation.AppSettingsExpressionBuilder" /> object returns the value from the Web.config file when the page is parsed and executed.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Retrieves values, as specified in a declarative expression, from the <appSettings> section of the Web.config file.</para>
</summary>
</Docs>
<Members>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public AppSettingsExpressionBuilder ();" />
<MemberType>Constructor</MemberType>
<Parameters />
<Docs>
<remarks>To be added.</remarks>
<since version=".NET 2.0" />
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Initializes a new instance of the <see cref="T:System.Web.Compilation.AppSettingsExpressionBuilder" /> class. </para>
</summary>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="EvaluateExpression">
<MemberSignature Language="C#" Value="public override object EvaluateExpression (object target, System.Web.UI.BoundPropertyEntry entry, object parsedData, System.Web.Compilation.ExpressionBuilderContext context);" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Object</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="target" Type="System.Object" />
<Parameter Name="entry" Type="System.Web.UI.BoundPropertyEntry" />
<Parameter Name="parsedData" Type="System.Object" />
<Parameter Name="context" Type="System.Web.Compilation.ExpressionBuilderContext" />
</Parameters>
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>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 <see cref="M:System.Web.Compilation.ExpressionBuilder.EvaluateExpression(System.Object,System.Web.UI.BoundPropertyEntry,System.Object,System.Web.Compilation.ExpressionBuilderContext)" /> by calling the <see cref="M:System.Web.Compilation.AppSettingsExpressionBuilder.GetAppSetting(System.String,System.Type,System.String)" /> method with the <see cref="P:System.Web.UI.BoundPropertyEntry.Expression" /> property as the <paramref name="key" /> parameter, the <see cref="P:System.Web.UI.PropertyEntry.Name" /> property on the <see cref="P:System.Web.UI.PropertyEntry.PropertyInfo" /> property as the <paramref name="propertyName" /> parameter, and the <see cref="T:System.Type" /> of the <paramref name="target" /> parameter as the <paramref name="targetType" /> parameter.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Returns a value from the <appSettings> section of the Web.config file.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="T:System.Object" /> associated with a key in the <appSettings> section of the Web.config file.</para>
</returns>
<param name="target">
<attribution license="cc4" from="Microsoft" modified="false" />The object that contains the property entry.</param>
<param name="entry">
<attribution license="cc4" from="Microsoft" modified="false" />The property to which the expression is bound..</param>
<param name="parsedData">
<attribution license="cc4" from="Microsoft" modified="false" />The object that represents parsed data as returned by <see cref="M:System.Web.Compilation.ExpressionBuilder.ParseExpression(System.String,System.Type,System.Web.Compilation.ExpressionBuilderContext)" />.</param>
<param name="context">
<attribution license="cc4" from="Microsoft" modified="false" />Properties for the control or page.</param>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="GetAppSetting">
<MemberSignature Language="C#" Value="public static object GetAppSetting (string key);" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Object</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="key" Type="System.String" />
</Parameters>
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>This method retrieves the appropriate value from the key/value pairs in the <appSettings> section of the Web.config file. It retrieves the value by getting the <see cref="P:System.Configuration.ConfigurationManager.AppSettings" /> property with the key as the index. The <see cref="T:System.Object" /> returned is of the type <see cref="T:System.String" />. </para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Returns a value from the <appSettings> section of the Web.config file.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="T:System.Object" /> associated with the key in the <appSettings> section of the Web.config file.</para>
</returns>
<param name="key">
<attribution license="cc4" from="Microsoft" modified="false" />The key for the value to be retrieved from the configuration file. </param>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="GetAppSetting">
<MemberSignature Language="C#" Value="public static object GetAppSetting (string key, Type targetType, string propertyName);" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.Object</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="key" Type="System.String" />
<Parameter Name="targetType" Type="System.Type" />
<Parameter Name="propertyName" Type="System.String" />
</Parameters>
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>This method retrieves the appropriate value from the key/value pairs in the <appSettings> section of the Web.config file. The value is retrieved by getting the <see cref="P:System.Configuration.ConfigurationManager.AppSettings" /> property with the key as the index. The resulting string value is converted to a new type based on the <paramref name="targetType" /> and <paramref name="propertyName" /> parameters.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Returns a value from the <appSettings> section of the Web.config file with the value converted to a target type.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="T:System.Object" /> associated with the key in the <appSettings> section of the Web.config file.</para>
</returns>
<param name="key">
<attribution license="cc4" from="Microsoft" modified="false" />The key for a value to be retrieved from the configuration file.</param>
<param name="targetType">
<attribution license="cc4" from="Microsoft" modified="false" />The type of the object that contains the property entry.</param>
<param name="propertyName">
<attribution license="cc4" from="Microsoft" modified="false" />The name of the property to which the expression is bound.</param>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="GetCodeExpression">
<MemberSignature Language="C#" Value="public override System.CodeDom.CodeExpression GetCodeExpression (System.Web.UI.BoundPropertyEntry entry, object parsedData, System.Web.Compilation.ExpressionBuilderContext context);" />
<MemberType>Method</MemberType>
<ReturnValue>
<ReturnType>System.CodeDom.CodeExpression</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="entry" Type="System.Web.UI.BoundPropertyEntry" />
<Parameter Name="parsedData" Type="System.Object" />
<Parameter Name="context" Type="System.Web.Compilation.ExpressionBuilderContext" />
</Parameters>
<Docs>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>This method is called during the CodeDOM creation for a page or control. The returned <see cref="T:System.CodeDom.CodeExpression" /> object represents the code expression to add to the property assignment in the generated page class.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Returns a code expression that is used to perform the property assignment in the generated page class.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>A <see cref="T:System.CodeDom.CodeExpression" /> that is used in the property assignment.</para>
</returns>
<param name="entry">
<attribution license="cc4" from="Microsoft" modified="false" />The property to which the expression is bound.</param>
<param name="parsedData">
<attribution license="cc4" from="Microsoft" modified="false" />The object that represents parsed data as returned by <see cref="M:System.Web.Compilation.ExpressionBuilder.ParseExpression(System.String,System.Type,System.Web.Compilation.ExpressionBuilderContext)" />.</param>
<param name="context">
<attribution license="cc4" from="Microsoft" modified="false" />Properties for the control or page.</param>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
<Member MemberName="SupportsEvaluate">
<MemberSignature Language="C#" Value="public override bool SupportsEvaluate { get; }" />
<MemberType>Property</MemberType>
<ReturnValue>
<ReturnType>System.Boolean</ReturnType>
</ReturnValue>
<Docs>
<value>To be added.</value>
<since version=".NET 2.0" />
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="P:System.Web.Compilation.AppSettingsExpressionBuilder.SupportsEvaluate" /> property indicates whether the <see cref="M:System.Web.Compilation.AppSettingsExpressionBuilder.EvaluateExpression(System.Object,System.Web.UI.BoundPropertyEntry,System.Object,System.Web.Compilation.ExpressionBuilderContext)" /> method has been implemented in the class and can return a value for the expression. <see cref="M:System.Web.Compilation.AppSettingsExpressionBuilder.EvaluateExpression(System.Object,System.Web.UI.BoundPropertyEntry,System.Object,System.Web.Compilation.ExpressionBuilderContext)" /> must be implemented within an expression builder for an expression to be evaluated in a page that is not compiled. The <see cref="T:System.Web.Compilation.AppSettingsExpressionBuilder" /> class supports evaluation of an application setting in a page that is not compiled, so it always returns true.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Returns a value indicating whether an expression can be evaluated in a page that is not compiled.</para>
</summary>
</Docs>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
</Member>
</Members>
</Type>
|
