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using System;
using System.Linq.Expressions;
using System.Web.Mvc;
namespace TypedMvcActionHelper
{
public static class TypedUrlGenerator
{
/// <summary>
/// Generate url like http://localhost/****/User/Search
/// </summary>
/// <typeparam name="TController"></typeparam>
/// <param name="urlHelper"></param>
/// <param name="expression"></param>
/// <returns></returns>
public static string Url<TController>(this UrlHelper urlHelper,Expression<Func<TController, ActionResult>> expression)
where TController : ControllerBase
{
var rootUrl = GetRootUrl(urlHelper);
var url = rootUrl+urlHelper.GetRightUrlPart<TController>(expression);
return url;
}
/// <summary>
/// Generate url like User/Search
/// </summary>
/// <typeparam name="TController"></typeparam>
/// <param name="urlHelper"></param>
/// <param name="expression"></param>
/// <returns></returns>
public static string Action<TController>(this UrlHelper urlHelper, Expression<Func<TController, ActionResult>> expression)
where TController : ControllerBase
{
var url = urlHelper.GetRightUrlPart(expression);
return url;
}
private static string GetRightUrlPart<TController>(this UrlHelper urlHelper,Expression<Func<TController, ActionResult>> expression)
where TController:ControllerBase
{
var expressionExtractor=MvcActionExpressionExtractor.For<TController>();
var controllerName = expressionExtractor.GetControllerName();
var actionName = expressionExtractor.GetActionName(expression);
var routeValueDictionary = expressionExtractor.GetRouteValueDictionary(expression);
var url = urlHelper.Action(actionName, controllerName, routeValueDictionary);
return url;
}
private static string GetRootUrl(UrlHelper url)
{
var requestUrl = @url.RequestContext.HttpContext.Request.Url;
var rootUrl = requestUrl.Scheme + "://" + requestUrl.Authority;
return rootUrl;
}
}
}
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