Teníamos una aplicación ya desarrollada donde teníamos que tener 2 copias de todos los archivos de recursos, uno para servicios y uno para el proyecto asp.net, también el proyecto dependía de la sintaxis <%$ Resources:NameOfResx,MyButtonText %>
, por lo que cambiar la sintaxis no era una opción .
Después de algún tiempo encontré la ExpressionBuilder y se acercó con la siguiente solución:
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Web.Compilation;
using System.Resources;
using System.CodeDom;
using System.Reflection;
/// <summary>
/// This class allows asp.net Resource lookups to different assembly
/// </summary>
[ExpressionPrefix("Resources")]
public class ResourceExpressionBuilder : ExpressionBuilder
{
static readonly Dictionary<string, ResourceManager> mResourceManagers = new Dictionary<string, ResourceManager>(StringComparer.OrdinalIgnoreCase);
static ResourceExpressionBuilder()
{
Assembly resourceAssembly = Assembly.GetAssembly(typeof(OneTypeInResourceAssembly));
const string suffix = ".resources";
string assemblyName = resourceAssembly.GetName().Name;
foreach (string resource in resourceAssembly.GetManifestResourceNames()) {
if ((resource.EndsWith(suffix, StringComparison.OrdinalIgnoreCase))) {
string resourceName = resource.Substring(0, resource.Length - suffix.Length);
string resourceFriendlyName = resourceName.Substring(assemblyName.Length + 1, resourceName.Length - (assemblyName.Length + 1));
mResourceManagers.Add(resourceFriendlyName, new ResourceManager(resourceName, resourceAssembly));
}
}
}
/// <summary>
/// When overridden in a derived class, returns a value indicating whether the current <see cref="T:System.Web.Compilation.ExpressionBuilder" /> object supports no-compile pages.
/// </summary>
/// <returns>true if the <see cref="T:System.Web.Compilation.ExpressionBuilder" /> supports expression evaluation; otherwise, false.</returns>
public override bool SupportsEvaluate {
get { return true; }
}
/// <summary>
/// When overridden in a derived class, returns an object that represents an evaluated expression.
/// </summary>
/// <param name="target">The object containing the expression.</param>
/// <param name="entry">The object that represents information about the property bound to by the expression.</param>
/// <param name="parsedData">The object containing 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">Contextual information for the evaluation of the expression.</param>
/// <returns>
/// An object that represents the evaluated expression; otherwise, null if the inheritor does not implement <see cref="M:System.Web.Compilation.ExpressionBuilder.EvaluateExpression(System.Object,System.Web.UI.BoundPropertyEntry,System.Object,System.Web.Compilation.ExpressionBuilderContext)" />.
/// </returns>
public override object EvaluateExpression(object target, System.Web.UI.BoundPropertyEntry entry, object parsedData, System.Web.Compilation.ExpressionBuilderContext context)
{
if ((parsedData != null && object.ReferenceEquals(parsedData.GetType(), typeof(string)))) {
return GetRequestedValue(Convert.ToString(parsedData));
}
return base.EvaluateExpression(target, entry, parsedData, context);
}
/// <summary>
/// When overridden in a derived class, returns code that is used during page execution to obtain the evaluated expression.
/// </summary>
/// <param name="entry">The object that represents information about the property bound to by the expression.</param>
/// <param name="parsedData">The object containing 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">Contextual information for the evaluation of the expression.</param>
/// <returns>
/// A <see cref="T:System.CodeDom.CodeExpression" /> that is used for property assignment.
/// </returns>
public override System.CodeDom.CodeExpression GetCodeExpression(System.Web.UI.BoundPropertyEntry entry, object parsedData, System.Web.Compilation.ExpressionBuilderContext context)
{
CodeExpression[] inputParams = new CodeExpression[] { new CodePrimitiveExpression(entry.Expression.Trim()) };
return new CodeMethodInvokeExpression(new CodeTypeReferenceExpression(this.GetType()), "GetRequestedValue", inputParams);
}
/// <summary>
/// Gets the requested value.
/// </summary>
/// <param name="expression">The expression.</param>
/// <returns></returns>
public static object GetRequestedValue(string expression)
{
string[] parts = expression.Split(new char[] { ',' }, 2, StringSplitOptions.None);
if ((parts.Length != 2)) {
throw new ArgumentException("Expression must contain ,");
}
string resourceFile = parts[0].Trim();
string resourceName = parts[1].Trim();
return mResourceManagers[resourceFile].GetString(resourceName);
}
}
Reemplazar OneTypeInResourceAssembly
con un tipo en el montaje que contiene los recursos.
Después de que usted puede simplemente añadir lo siguiente a web.config y que sólo debería funcionar ..
<system.web>
<compilation>
<expressionBuilders>
<remove expressionPrefix="Resources" />
<add expressionPrefix="Resources" type="Assembly.ResourceExpressionBuilder" />
</expressionBuilders>
</compilation>
</system.web>
Es bueno saber que no voy a ser capaz de acceder a los recursos archivos aspx (su definitivamente ser utilizado como esa) Sería bueno ver este ExpressionBuilder personalizado si puedes compartirlo. –
@ dev.e.loper: He actualizado mi respuesta. – Heinzi
@Heinzi: Esa solución no hace el ensamblaje por separado para resolver los recursos por cultura. Obtendrá todas las cadenas para la cultura predeterminada, incluso si hay una resx adicional definida para la cultura actual. – Sergio