In the ActionLink code below, how can I assign a C# string variable to @class in the view in ASP.NET MVC 5?
@Html.ActionLink("Manage List", "Index", new { @class = "DynamicClassName" });
I want to replace the static string @class = "DynamicClassName" with something dynamic, similar to @class = @myChangingColorClass
// Error
// yes, myChangingColorClass is declared C# valid string
@Html.ActionLink("Manage List", "Index", new { @class = @myChangingColorClass });
You need to declare myChangingColorClass in a code block in cshtml as below
@{
string myChangingColorClass = "myClass";
}
This can be do by two ways one is by setting value in ViewModel class or by setting value in ViewBag, ViewData or TempData.
Way 1) Preffered way Strongly Typed: Set css class name to viewmodel class attribute:
Class Student
{
public ID BIGINT {get; set;}
... //other properties
}
Class StudentViewModel : Student
{
public CssClass string {get; set;}
}
//controller action
public ActionResult Index(){
StudentViewModel objModel;
//initialize model
objModel.CssClass = "myCssClass"; //set css class name to viewmodel
return View(objModel);
}
//in view use code like below:
@model namespace.StudentViewModel;
@Html.ActionLink("Manage List", "Index", new { @class = Model.CssClass })
Way 2) Set css class name to viewbag / viewdata / tempdate. But this is not prefered.
//controller action
public ActionResult Index(){
ViewBag.CssClass = "myCssClass"; //set css class name to ViewBag
//or
ViewData["CssClass"] = "myCssClass"; //set css class name to ViewData
//or
TempData["CssClass"] = "myCssClass"; //set css class name to TempData
return View();
}
//in view use code like below:
@Html.ActionLink("Manage List", "Index", new { @class = @ViewBag.CssClass })
//Or
@Html.ActionLink("Manage List", "Index", new { @class = @Convert.toString(ViewData["CssClass"]) })
//Or
@Html.ActionLink("Manage List", "Index", new { @class = @Convert.toString(TempData["CssClass"]) })
Please let me know, is this works for you?
You can try putting a string variable (property) in your Model or ViewModel class and then just set it from code-behind and use it in your view like this :
@Html.ActionLink("Manage List", "Index", new { @class = @Model.myChangingColorClass});
@{
string myChangingColorClass = "myClass";
}
@Html.ActionLink("Manage List", "Index", null, new { @class = @myChangingColorClass });
it will generate
<a class="myClass" href="/ControllerName">Manage List</a>
but using this,
@Html.ActionLink("Manage List", "Index", new { @class = @myChangingColorClass });
it will generate
<a href="/ControllerName?class=myClass">Manage List</a>
it assumes it like a parameter of that method.. that u don't want..
add null before new { @class = @myChangingColorClass } will solve this problem
myChangingColorClassexactly?myChangingColorClassdeclared? What's the error message?