I am adding a WebForm from which I would like to resolve routes to URLs. For example, in MVC I would just use
return RedirectToAction("Action", "Controller");
So, if you have a way of getting to that same URL from a WebForm in the same application, it would be appreciated.
Try something like this in your Webform:
<% var requestContext = new System.Web.Routing.RequestContext(
new HttpContextWrapper(HttpContext.Current),
new System.Web.Routing.RouteData());
var urlHelper = new System.Web.Mvc.UrlHelper(requestContext); %>
<%= urlHelper.RouteUrl(new { controller = "Controller", action = "Action" }) %>
Revised version of the code above for PageCommon ... as it currently is it breaks.
public static class MvcPages{
public static UrlHelper GetUrlHelper(this System.Web.UI.Control c)
{
var helper = new System.Web.Mvc.UrlHelper(c.Page.Request.RequestContext);
return helper;
}
public static HtmlHelper GetHtmlHelper(this System.Web.UI.Control c)
{
var httpContext = new HttpContextWrapper(HttpContext.Current);
var controllerContext = new ControllerContext(httpContext, new RouteData(), new DummyController());
var viewContext = new ViewContext(controllerContext, new WebFormView(controllerContext, "View"), new ViewDataDictionary(), new TempDataDictionary(), TextWriter.Null);
var helper = new HtmlHelper(viewContext, new ViewDataBag());
return helper;
}
private class ViewDataBag : IViewDataContainer
{
ViewDataDictionary vdd = new ViewDataDictionary();
public ViewDataDictionary ViewData
{
get
{
return vdd;
}
set
{
vdd = value;
}
}
}
private class DummyController : Controller
{
}
}
<%= this.GetHtmlHelper().Partial("Error") %> and received an InvalidOperationException.If you want to stay away from any MVC dependencies then this is the solution I came up with. It's very close to the accepted answer. I have a class my webform pages inherit and this UrlHelper is available in the ASPX pages.
using System.Net.Http;
using System.Web;
using System.Web.Http.Routing;
public class ClassOtherPagesInherit {
public UrlHelper Url = new UrlHelper(new HttpRequestMessage(new HttpMethod(HttpContext.Current.Request.HttpMethod), HttpContext.Current.Request.Url));
}
Then you can call this UrlHelper object like this
<%Url.Route("string", new {}) %>
For those looking for an actual HtmlHelper or a cleaner way to use the urlHelper in a page:
public static class PageCommon
{
public static System.Web.Mvc.UrlHelper GetUrlHelper(this System.Web.UI.Control c)
{
var helper = new System.Web.Mvc.UrlHelper(c.Page.Request.RequestContext);
return helper;
}
class ViewDataBag : IViewDataContainer
{
ViewDataDictionary vdd = new ViewDataDictionary();
public ViewDataDictionary ViewData
{
get
{
return vdd;
}
set
{
vdd = value;
}
}
}
public static System.Web.Mvc.HtmlHelper GetHtmlHelper(this System.Web.UI.Control c)
{
var v = new System.Web.Mvc.ViewContext();
var helper = new System.Web.Mvc.HtmlHelper(v, new ViewDataBag());
return helper;
}
}
<%= this.GetHtmlHelper().Partial("Error") %> and received an ArgumentNullException.