I use a custom extension for my ActionLinks. I have added an attribute data_url which is meant to be translated to an attribute of data-url. This is, replacing the underscaore with a dash.
Here is link 1 using my custom extension:
#Ajax.ActionLink("Add", MyRoutes.GetAdd(), new AjaxOptions()
, new { data_url = Url.Action(...)})
Result: data_url
Here is link 2 using the framework ActionLink:
#Ajax.ActionLink("Add 2", "x", "x", null, new AjaxOptions()
, new { data_url = Url.Action(...) })
Result: data-url
Here is the extension, simple enough, except that the only way to pass the htmlAttributes through that I know of is by using the ToDictionaryR() extension. I suspect this is the problem, so I am wondering if I should be using something else. I have supplied that extension below too.
public static MvcHtmlString ActionLink(this AjaxHelper helper, string linkText
, RouteValueDictionary routeValues, AjaxOptions ajaxOptions
, object htmlAttributes = null)
{
return helper.ActionLink(linkText, routeValues["Action"].ToString()
, routeValues["Controller"].ToString(), routeValues, ajaxOptions
, (htmlAttributes == null ? null : htmlAttributes.ToDictionaryR()));
}
public static IDictionary<string, object> ToDictionaryR(this object obj)
{
return TurnObjectIntoDictionary(obj);
}
public static IDictionary<string, object> TurnObjectIntoDictionary(object data)
{
var attr = BindingFlags.Public | BindingFlags.Instance;
var dict = new Dictionary<string, object>();
foreach (var property in data.GetType().GetProperties(attr))
{
if (property.CanRead)
{
dict.Add(property.Name, property.GetValue(data, null));
}
}
return dict;
}
thank you
You could use the AnonymousObjectToHtmlAttributes method which does exactly what you want and you don't need any custom extension methods:
public static MvcHtmlString ActionLink(
this AjaxHelper helper,
string linkText,
RouteValueDictionary routeValues,
AjaxOptions ajaxOptions,
object htmlAttributes = null
)
{
return helper.ActionLink(
linkText,
routeValues["Action"].ToString(),
routeValues["Controller"].ToString(),
routeValues,
ajaxOptions,
htmlAttributes == null ? null : HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes)
);
}
I've got a HTML list of menu items generated by MVC 2.
<%= Html.MenuItem("Home", "Home", "Index")%>
<%= Html.MenuItem("Login", "Login", "Account")%>
Which generate in HTML:
<li>
Home
</li>
<li>
Login
</li>
How can I add a CSS class to the element in the list for each item in the list?
I am guessing this MenuItem is an extension method that you wrote or that you took from someone, I am also guessing that they are wrapping an ActionLink Method, As in:
public static string MenuItem(this HtmlHelper helper, string linkText, string actionName, string controllerName)
{
string currentControllerName = (string)helper.ViewContext.RouteData.Values["controller"];
string currentActionName = (string)helper.ViewContext.RouteData.Values["action"];
// Add selected class
if (currentControllerName.Equals(controllerName, StringComparison.CurrentCultureIgnoreCase) && currentActionName.Equals(actionName, StringComparison.CurrentCultureIgnoreCase))
return string.Concat("<li class=\"selected\">", helper.ActionLink(linkText, actionName, controllerName), "</li>");
// Add link
return string.Concat("<li>", helper.ActionLink(linkText, actionName, controllerName), "</li>");
}
if this is the case just make it take is a css class as a parameter and use the ActionLink that takes in htmlattributes, as in:
public static string MenuItem(this HtmlHelper helper, string linkText, string actionName, string controllerName, string cssClass = "menu-item")
{
string currentControllerName = (string)helper.ViewContext.RouteData.Values["controller"];
string currentActionName = (string)helper.ViewContext.RouteData.Values["action"];
// Add selected class
if (currentControllerName.Equals(controllerName, StringComparison.CurrentCultureIgnoreCase) && currentActionName.Equals(actionName, StringComparison.CurrentCultureIgnoreCase))
return string.Concat("<li class=\"selected\">", helper.ActionLink(linkText, actionName, controllerName), "</li>");
// Add link
return string.Concat("<li>", helper.ActionLink(linkText, actionName, controllerName, new {#class = cssClass} ), "</li>");
}
then you just call them like this:
<%= Html.MenuItem("Home", "Home", "Index", "index-tem")%>
I've written an extension method to HtmlHelper (derived from active menu item - asp.net mvc3 master page). This allows me to output the cssclass "active" for the current page.
However, I've now refactored to use Areas so the method no longer works because I have controllers called Home and actions called Index in several areas. So I've been trying to sort this out by checking the current area with the Area passed as part of the routevalues anonymous types.
So my extension method now looks like this:
public static MvcHtmlString NavigationLink<T>(this HtmlHelper<T> htmlHelper, string linkText, string actionName, string controllerName, dynamic routeValues)
{
string currentController = htmlHelper.ViewContext.RouteData.GetRequiredString("controller");
string currentArea = htmlHelper.ViewContext.RouteData.DataTokens["Area"] as string;
if (controllerName == currentController && IsInCurrentArea(routeValues,currentArea))
{
return htmlHelper.ActionLink(
linkText,
actionName,
controllerName,
(object)routeValues,
new
{
#class = "active"
});
}
return htmlHelper.ActionLink(linkText, actionName, controllerName, (object)routeValues, null);
}
private static bool IsInCurrentArea(dynamic routeValues, string currentArea)
{
string area = routeValues.Area; //This line throws a RuntimeBinderException
return string.IsNullOrEmpty(currentArea) && (routeValues == null || area == currentArea);
}
I changed the type of routeValues to dynamic so that I could compile the following line:
string area = routeValues.Area;
I can see the Area property on the routeValues object in the debugger but as soon as I access it I get a RuntimeBinderException.
Is there a better way to access the properties on an anonymous type?
I've figured out that I can use the constructor on the RouteValueDictionary which allows me to look up the Area property easily.
I also noticed I was complicating the issue by trying to use the controller value as well so my code now looks like the following:
public static MvcHtmlString NavigationLink<T>(this HtmlHelper<T> htmlHelper, string linkText, string actionName, string controllerName, object routeValues)
{
string currentArea = htmlHelper.ViewContext.RouteData.DataTokens["Area"] as string;
if (IsInCurrentArea(routeValues, currentArea))
{
return htmlHelper.ActionLink(
linkText,
actionName,
controllerName,
routeValues,
new
{
#class = "active"
});
}
return htmlHelper.ActionLink(linkText, actionName, controllerName, routeValues, null);
}
private static bool IsInCurrentArea(object routeValues, string currentArea)
{
if (routeValues == null)
return true;
var rvd = new RouteValueDictionary(routeValues);
string area = rvd["Area"] as string ?? rvd["area"] as string;
return area == currentArea;
}
is there anyway to have an image act as an ajax actionlink? I can only get it to work using text. Thanks for your help!
From Stephen Walthe, from his Contact manger project
public static class ImageActionLinkHelper
{
public static string ImageActionLink(this AjaxHelper helper, string imageUrl, string altText, string actionName, object routeValues, AjaxOptions ajaxOptions)
{
var builder = new TagBuilder("img");
builder.MergeAttribute("src", imageUrl);
builder.MergeAttribute("alt", altText);
var link = helper.ActionLink("[replaceme]", actionName, routeValues, ajaxOptions);
return link.Replace("[replaceme]", builder.ToString(TagRenderMode.SelfClosing));
}
}
You can now type in your aspx file :
<%= Ajax.ImageActionLink("../../Content/Delete.png", "Delete", "Delete", new { id = item.Id }, new AjaxOptions { Confirm = "Delete contact?", HttpMethod = "Delete", UpdateTargetId = "divContactList" })%>
Here's the easiest solution I've found:
<%= Ajax.ActionLink("[replacethis]", ...).Replace("[replacethis]", "<img src=\"/images/test.gif\" ... />" %>
The Replace() call is used to push the img tag into the action link. You just need to use the "[replaceme]" text (or any other safe text) as a temporary placeholder to create the link.
This is a Razor/MVC 3 (and later) update to Black Horus' answer:
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
public static class ImageActionLinkHelper
{
public static IHtmlString ImageActionLink(this AjaxHelper helper, string imageUrl, string altText, string actionName, object routeValues, AjaxOptions ajaxOptions, object htmlAttributes = null)
{
var builder = new TagBuilder("img");
builder.MergeAttribute("src", imageUrl);
builder.MergeAttribute("alt", altText);
builder.MergeAttributes(new RouteValueDictionary(htmlAttributes));
var link = helper.ActionLink("[replaceme]", actionName, routeValues, ajaxOptions).ToHtmlString();
return MvcHtmlString.Create(link.Replace("[replaceme]", builder.ToString(TagRenderMode.SelfClosing)));
}
}
You can now type in your .cshtml file :
#Ajax.ImageActionLink("../../Content/Delete.png", "Delete", "Delete", new { id = item.Id }, new AjaxOptions { Confirm = "Delete contact?", HttpMethod = "Delete", UpdateTargetId = "divContactList" })
Oct 31. 2013: Updated with an extra parameter to allow for setting additional HTML attributes to the image element. Usage:
#Ajax.ImageActionLink("../../Content/Delete.png", "Delete", "Delete", new { id = item.Id }, new AjaxOptions { Confirm = "Delete contact?", HttpMethod = "Delete", UpdateTargetId = "divContactList" }, new{ style="border: none;" })
Another solution is to create your own extension method:
ActionLink<TController>(this HtmlHelper helper, Expression<Action<TController>> action, string linkText, object htmlAttributes, LinkOptions options)
and as the last parameter is the enumeration LinkOptions
[Flags]
public enum LinkOptions
{
PlainContent = 0,
EncodeContent = 1,
}
and then you can use it as follows:
Html.ActionLink<Car>(
c => c.Delete(item.ID), "<span class=\"redC\">X</span>",
new { Class = "none left" },
LinkOptions.PlainContent)
I'll post whole description of this solution on my blog: http://fknet.wordpress.com/
The short answer is that is not possible. Your options are to write your own extension method to have an ImageActionLink, not too hard to do. Or add an attribute to the actionLink and replace the innerhtml with the image tag.
See version 7 the Contact Manager Tutorial on http://asp.net/mvc. Stephen Walther has an example of creating an Ajax.ActionLink that is an image.
MVC3, Html.ActionImageLink and Ajax.ActionImageLink
Thank you to all the other answers in helping me with these.
public static MvcHtmlString ActionImageLink(this HtmlHelper helper, string imageUrl, string altText, string actionName, string controller, object routeValues)
{
var builder = new TagBuilder("img");
builder.MergeAttribute("src", imageUrl);
builder.MergeAttribute("alt", altText);
var link = helper.ActionLink("[replaceme]", actionName, controller, routeValues);
return new MvcHtmlString(link.ToHtmlString().Replace("[replaceme]", builder.ToString(TagRenderMode.SelfClosing)));
}
public static MvcHtmlString ActionImageLink(this AjaxHelper helper, string imageUrl, string altText, string actionName, string controller, object routeValues, AjaxOptions ajaxOptions)
{
var builder = new TagBuilder("img");
builder.MergeAttribute("src", imageUrl);
builder.MergeAttribute("alt", altText);
var link = helper.ActionLink("[replaceme]", actionName, controller, routeValues, ajaxOptions);
return new MvcHtmlString(link.ToHtmlString().Replace("[replaceme]", builder.ToString(TagRenderMode.SelfClosing)));
}
General solution: include any Razor you want inside the action link
There's a much better solution using Razor template delegates, which allows to insert any Razor code inside the action link in a very natural way. So you can add an image, or any other code.
This is the extension method:
public static IHtmlString ActionLink<T>(this AjaxHelper ajaxHelper,
T item, Func<T,HelperResult> template, string action,
string controller, object routeValues, AjaxOptions options)
{
string rawContent = template(item).ToHtmlString();
MvcHtmlString a = ajaxHelper.ActionLink("$$$", action,
controller, routeValues, options);
return MvcHtmlString.Create(a.ToString().Replace("$$$", rawContent));
}
An this is how it can be used:
#Ajax.ActionLink(car,
#<div>
<h1>#car.Maker</h1>
<p>#car.Description</p>
<p>Price: #string.Format("{0:C}",car.Price)</p>
</div>, ...
This allows to write Razor with intellisense, and use any object you want for the template (the ViewModel, or any other object, like the car in my sample). And you can use any helper inside the template to nest images or whatver element you want.
Note for Resharper Users
If you are using R# in your project, you can add R# annotations to improve Intellisense:
public static IHtmlString ActionLink<T>(this AjaxHelper ajaxHelper, T item,
Func<T, HelperResult> template,
[AspMvcAction] string action, [AspMvcController] string controller,
object routeValues, AjaxOptions options)
Every answer is good but I found the easiest one:
#Html.ActionLink( " ", "Index", "Countries", null, new
{
style = "background: url('../../Content/Images/icon.png') no-repeat center right;display:block; height:24px; width:24px;margin-top:-2px;text-decoration:none;"
} )
Note that it is using a white space (" ") for the link text. It will not work with an empty text.
The first solution is to use a helper static method DecodeLinkContent like the following:
DecodeLinkContent(Html.ActionLink<Home>(c => c.Delete(item.ID), "<span class=\"redC\">X</span>",new { Class = "none left"}))
DecodeLinkContent has to find first '>' and last '<' and has to replace the content with HttpUtility.Decode(content).
This solution is little bit a hack but I think it's the most easy.
Update for MVC3 using Templated Razor Delegates relies on T4Mvc,but brings so much power.
Based on various other answers on this page.
public static HelperResult WrapInActionLink(this AjaxHelper helper,ActionResult result, Func<object,HelperResult> template,AjaxOptions options)
{
var link=helper.ActionLink("[replaceme]",result,options);
var asString=link.ToString();
var replaced=asString.Replace("[replaceme]",template(null).ToString());
return new HelperResult(writer =>
{
writer.Write(replaced);
});
}
Allows:
#Ajax.WrapInActionLink(MVC.Deal.Details(deal.ID.Value),#<img alt='Edit deal details' src='#Links.Content.Images.edit_16_gif'/>, new AjaxOptions() { UpdateTargetId="indexDetails" })
.li_inbox { background: url(inbox.png) no-repeat; padding-left:40px;
/image background wight 40px/ }
<li class="li_inbox" >
#Ajax.ActionLink("Inbox", "inbox","Home", new { },
new AjaxOptions
{
UpdateTargetId = "MainContent",
InsertionMode = InsertionMode.Replace,
HttpMethod = "GET"
})
Try this
#Html.Raw(HttpUtility.HtmlDecode(Ajax.ActionLink( "<img src=\"/images/sjt.jpg\" title=\"上一月\" border=\"0\" alt=\"上一月\" />", "CalendarPartial", new { strThisDate = Model.dtCurrentDate.AddMonths(-1).ToString("yyyy-MM-dd") }, new AjaxOptions { #UpdateTargetId = "calendar" }).ToString()))
Nice solutions here, but what if you want to have more then just an image in the actionlink? This is how I do it:
#using (Ajax.BeginForm("Action", "Controler", ajaxOptions))
{
<button type="submit">
<img src="image.png" />
</button>
}
The drawback is that I still have to do a bit of styling on the button-element, but you can put all the html you want in there.
All are very Nice solutions, but if you dislike having a replace in your solution you can try this:
{
var url = new UrlHelper(helper.ViewContext.RequestContext);
// build the <img> tag
var imgBuilder = new TagBuilder("img");
imgBuilder.MergeAttribute("src", url.Content(imageUrl));
imgBuilder.MergeAttribute("alt", altText);
string imgHtml = imgBuilder.ToString(TagRenderMode.SelfClosing);
//build the <a> tag
var anchorBuilder = new TagBuilder("a");
anchorBuilder.MergeAttribute("href", url.Action(actionName, controller, routeValues));
anchorBuilder.InnerHtml = imgHtml; // include the <img> tag inside
anchorBuilder.MergeAttributes<string, object>(ajaxOptions.ToUnobtrusiveHtmlAttributes());
string anchorHtml = anchorBuilder.ToString(TagRenderMode.Normal);
return MvcHtmlString.Create(anchorHtml);
}
Furthermore, in my case, if I don't use url.Content(imageUrl), the image doesn't display.
I have found that far and away the best solution to this is to use the input tag with type="image"
#using (Ajax.BeginForm( "LoadTest","Home" , new System.Web.Mvc.Ajax.AjaxOptions { UpdateTargetId = "[insert your target tag's id here]" }))
{
<input type="image" class="[css style class here]" src="[insert image link here]">
}
It's easy and it's fast.
I've used it in combination with other controls libraries that interfere with AjaxOptions, so I tend to type out the whole System.Web.Mvc.Ajax.AjaxOptions just in case I end up trying a different set in the future.
NOTE:
I have noticed that this does appear to have issues within MVC3 (something to do with type="image"), it does work for MVC 4 though
Use this Extension to generate ajax link with glifyphicon:
/// <summary>
/// Create an Ajax.ActionLink with an associated glyphicon
/// </summary>
/// <param name="ajaxHelper"></param>
/// <param name="linkText"></param>
/// <param name="actionName"></param>
/// <param name="controllerName"></param>
/// <param name="glyphicon"></param>
/// <param name="ajaxOptions"></param>
/// <param name="routeValues"></param>
/// <param name="htmlAttributes"></param>
/// <returns></returns>
public static MvcHtmlString ImageActionLink(this AjaxHelper ajaxHelper, string linkText, string actionName, string controllerName, string glyphicon, AjaxOptions ajaxOptions, RouteValueDictionary routeValues = null, object htmlAttributes = null)
{
//Example of result:
//<a id="btnShow" href="/Customers/ShowArtworks?customerId=1" data-ajax-update="#pnlArtworks" data-ajax-success="jsSuccess"
//data-ajax-mode="replace" data-ajax-method="POST" data-ajax-failure="jsFailure" data-ajax-confirm="confirm" data-ajax-complete="jsComplete"
//data-ajax-begin="jsBegin" data-ajax="true">
// <i class="glyphicon glyphicon-pencil"></i>
// <span>Edit</span>
//</a>
var builderI = new TagBuilder("i");
builderI.MergeAttribute("class", "glyphicon " + glyphicon);
string iTag = builderI.ToString(TagRenderMode.Normal);
string spanTag = "";
if (!string.IsNullOrEmpty(linkText))
{
var builderSpan = new TagBuilder("span") { InnerHtml = " " + linkText };
spanTag = builderSpan.ToString(TagRenderMode.Normal);
}
//Create the "a" tag that wraps
var builderA = new TagBuilder("a");
var requestContext = HttpContext.Current.Request.RequestContext;
var uh = new UrlHelper(requestContext);
builderA.MergeAttribute("href", uh.Action(actionName, controllerName, routeValues));
builderA.MergeAttributes(HtmlHelper.AnonymousObjectToHtmlAttributes(htmlAttributes));
builderA.MergeAttributes((ajaxOptions).ToUnobtrusiveHtmlAttributes());
builderA.InnerHtml = iTag + spanTag;
return new MvcHtmlString(builderA.ToString(TagRenderMode.Normal));
}
Use Html data- attributes
<a data-ajax="true" data-ajax-begin="..." data-ajax-success="..." href="#Url.Action("Delete")">
<i class="halflings-icon remove"></i>
</a>
Replace the
<i class="halflings-icon remove"></i>
with your own image
Others didn't work for me as the .ToHtmlString() spat out a string in MVC 4.
the below passes an id to the edit control and displays an edit image instead of the text spag:
#MvcHtmlString.Create(Ajax.ActionLink("Spag", "Edit", new { id = item.x0101EmployeeID }, new AjaxOptions() { UpdateTargetId = "selectDiv", InsertionMode = InsertionMode.Replace, HttpMethod = "GET" }).ToHtmlString().Replace("Spag", "<img src=\"" + Url.Content("../../Images/edit.png") + "\" />"))
actionName+"/"+routeValues Proje/ControlName/ActionName/Id
using System.Web;
using System.Web.Mvc;
using System.Web.Mvc.Ajax;
namespace MithatCanMvc.AjaxHelpers
{
public static class ImageActionLinkHelper
{
public static IHtmlString ImageActionLink(this AjaxHelper helper, string imageUrl, string altText, string actionName, string routeValues, AjaxOptions ajaxOptions)
{
var builder = new TagBuilder("img");
builder.MergeAttribute("src", imageUrl);
builder.MergeAttribute("alt", altText);
var link = helper.ActionLink("[replaceme]", actionName+"/"+routeValues, ajaxOptions).ToHtmlString();
return MvcHtmlString.Create(link.Replace("[replaceme]", builder.ToString(TagRenderMode.SelfClosing)));
}
}
}
I don't know, this seems easier to me:
<a href="#Url.Action("index", "home")">
<img src="~/Images/rocket.png" width="25" height="25" title="Launcher" />
</a>