MVC :: Accessing Html Helper Controls From The Controller?
Aug 13, 2010
In a webforms application, it's possible to add a server control to the markup and then access that control from the corresponding code behind file, but I'm not sure of the MVC equivalent of this functionality.
I've been looking at some tutorials, and it appears that in MVC applications, instead of using server controls, the examples are using HTML helpers, such as Html.TextBox, etc.
However, while I can find examples html helpers in views, I can't find any examples of how these helpers are accessed in the controllers, so I've declared an Html.TextBox in my view but don't know how to access its value in the controller when I hit enter.
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Similar Messages:
Dec 30, 2010
I'm trying to write a controller method that returns an ActionResult.
In this method, i would like to:
1. call an HTML helper method
2. Capture and store the HTML helper's rendered HTML in a string
3. Return the method with the rendered HTML wrapped as a JSON
How do i call the Html Helper method from my controller method? Simply using the static class HtmlHelper does not work.
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Aug 4, 2010
I am using a view based of a formView.. say LogonViewForm (having userName and password) what i want to do is , suppose i enter my username and password and my account is not verified after logon. Its gives me a message as your account is not verified and redirects me to another view, what i want is it must be already having my username in its username textbox and must be disbaled. rite now i can pass the username value to verify view.. but can`t get how to disable the textbox.
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Jul 20, 2010
I think I need to drop in some escape characters, but I'm not quite sure where. Here is the javascript function I'm attempting to call:
function setData(associateValue, reviewDateValue) {
var associate = document.getElementById("Associate");
var reviewDate = document.getElementById("ReviewDate");
associate.value = associateValue;
reviewDate.value = reviewDateValue;
}
Here is the asp .net mvc line where I'm attempting to create a Radio button with a click event that calls the above function and passes data from the model as javascript parameter values.
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('<%=item.Associate%>','<%=item.ReviewDate%>' )" } )%>
The above throws a bunch of compile issues and doesn't work. A call such as the following does call the javascript, but doesn't get the data from the model.
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('item.Associate','item.ReviewDate' )" } )%>
<%= Html.RadioButton("Selected", item.Selected, new { onClick="setData('item.Associate','item.ReviewDate' )" } )%>
<% String functionCall = String.Format("setData('{0}','{1}')", Html.Encode(item.Associate), Html.Encode(item.ReviewDate )) ; %>
<%= Html.RadioButton("Selected", item.Selected, new { onClick=functionCall } )%>
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Feb 10, 2010
It's a little unclear for me on when to use a custom helper method and when to use RenderAction and also when to simply use ViewData instead. Some of their functions overlap slightly.
For example, if I were to create a Category navigation bar, would I create a new helper method and place that in some partial view? I had initially though of doing this, but I read on some blog to use RenderAction instead.
Assume the list of categories is coming from some data source.
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Aug 30, 2010
<%= Html.RouteLink(">>>", new { page = (Model.PageIndex + 1) },null)%>
Is it possible to set image instead ">>>" and how?
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Jan 20, 2010
I was wondering if it's possible to render an Html Helper in a View inside a codeblock. So instead of:
[code]....
And have this render. Of course as it is, it wont render, so is there a way to programically decide if a textbox can be added without having to have a million delimiters in the page to accomplish this?
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Mar 15, 2010
I am trying to create 2 Html helpers but that use the String Type as in MVC 2.
1. Html.FileFor Would render something like: <input type="file"
2. Html.Buttom and Html.Submit that would render <input type="button" or <input type="submit" In this case I suppose it makes no sense to have the For.
I know how to do (2) unless there would be something more than rendering the help and defining the Html attributes. However (1) I don't know how to do it
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Jan 5, 2011
Can we set an id attribute as I would for something like a table column via: for an html dropdown list element that is created with a helper such as:
<% for (int i = 0; i < Model.Trx.TransactionHolidayCityCollection.Count; i++)
{%>
<%= i > 0 ? "," : "" %>
<%= DropDownData.HolidayDays().ToList().Find(item => item.Value == Model.Trx.TransactionHolidayCityCollection[i].HolidayCityID.Value.ToString()).Text %>
<%} %>
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Jan 25, 2011
Is there a way to retrieve the client side ID for a model property similar to how the helpers like LabelFor etc generate the ID? For example, I have a model with a DateOfBirth property. I want to hook up that field to a jQuery DatePicker. Normally, I would hook up the date picker like this:
[Code]....
This works fine but hard codes the DateOfBirth property name. Ideally, I would like to use this:
[Code]....
Is this already available out of the box somewhere? I just created an extension method on the HtmlHelper class that does exactly this, but I wondered if there was already something built-in so I don't have to reinvent and test the wheel.
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Mar 30, 2011
i am using html.textboxfor to display the amount (int) from my model. currently once the form is shown, the default amount is = 0. i wish to have the default set as 1, is it possible to overwrite the default for html helper??
[Code]....
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Feb 17, 2010
im extending the htmlhelper. but it i cannot call the renderaction of it.
using System.Text;
using System.Web.Mvc;
using System.Web.Mvc.Html;
public static class ViewHelpers
{
public static string Text(this HtmlHelper htmlHelper, string name, object value, bool isEditMode)
{
htmlHelper.RenderAction(...) //cannot be called
}
}
how can i call the RenderAction?
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Mar 2, 2011
I was using the default MailMessage and SmtpClient classes for creating and sending HTML emails from a web forms website. The problem is I have a lot of hard coded HTML for formatting the email that gets sent. Is there a class that helps format emails for .NET?
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Oct 25, 2010
I think (I read it somewhere and can't find the source again) there is a new Google Analytics Html Helper on MVC 3 Beta.
Where can I find the source for this helper?
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Jan 7, 2010
I have retrieved an array of data that I want to display in my view in checkbox format.
[Code]....
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Feb 23, 2011
I have a custom Html Helper that takes a few parameters and generates some Html. For example:
[Code]....
This would render something like:
[Code]....
I would like to be able to define a Razor Template so the Html Helper renders the Html differenlty:
[Code]....
This would render:
[Code]....
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Nov 23, 2010
I need an Html Helper that renders an action to as a string.
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Nov 2, 2010
how can I create a html helper for tny mce htlm editor?
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Mar 11, 2011
I would in normal asp.net use a theme to turn off autocomplete on all text boxes on an entire site. However i cannot do this on MVC because nothing in the theme .skin files seems to work.
I have this in my .skin file:
<asp:TextBox runat="server" autocomplete="off" />
however this does not render at all, of course because this is not how MVC works. Anyway is there any way i can get this sort of thing to work.The site i am trying to do it on is too big to warrant changing every textbox or creating a new HTML helper to solve the issue?
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Mar 10, 2010
I'm new to MVC and am trying to create some more user friendly controls for use on the Create views. I'm able to render a control using a combination of extensions and partial views, however I am unable to bind to those controls as I am with the out of the box controls like html.textboxfor such as:
Html.TextBoxFor( model => model.Capability_Menu_Group_Id)
Although the controls renders on the create form, the value is not set on create. I would like to set up this same construct used with TextBoxFor for my custom controls.
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Feb 28, 2011
I am working on a project in ASP.Net MVC3 and this model of development is quite new to me, but I think I am starting to get the hang of it.
In my project, I am creating a dynamic array of <input type="check"... Checkboxes. From my understanding, when sending form data it should be processed in the Controller using <form method="post"....
So my question is: what is the best way to go about consuming a dynamic amount of HTML objects sent in the post data? What I am doing right now is looping through all the controls sent VIA: post and parsing the dynamic ones by the ID name. This method seems highly suspect in terms of coding practice. It does work, but I am wondering what the "norm" is for this sort of proceedure?
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Jul 4, 2010
In my controller I generated a SelectList that I pass to the dropdown helper:<%= Html.DropDownList("abc123", Model.SomeList) %>I look at the querystring for a value, which is a ID.I then loop through all the items in the SelectList and if it is equal to the ID, I do:The controller action then passes this SelectList to the view and then to the Html helper.In debug mode I can see the value does get set to true, but the html renders without selecting the item.
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Jan 9, 2010
I am new to MVC. why HTML helper methods are inside asp server tags?
for example <%=Html.Textbox("Textbox1")%>
are they equivalnet to asp.net web form server tags. Like in web forms we have
<asp:TextBox runat="server"></asp:TextBox>
If someone can kindly explain.
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Jan 23, 2010
I was wondering if it is possible to create a custom strongly typed HTML Helper in ASP.NET MVC 2? Creating a regular (read not-strongly-typed) helper is straightforward but i am having difficulty creating strongly typed versions. For example, I would like to create a DatePickerFor html helper...
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Aug 31, 2010
I'm trying to use the new Html helper extension Serialize() from the furthure assembly..
<%@ Page Language="C#" Inherits="System.Web.Mvc.ViewPage<List<MvcApplication2.Models.ProductViewBinding>>" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<%@ Import Namespace="Microsoft.Web.Mvc" %>>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Index</title>
</head>
<body>
<div>
<% using (Html.BeginForm("Index", "Products", FormMethod.Post))
{ %>
<% int codeIndex = 0;
foreach (var item in Model)
{ %>
<%: Html.TextBox("Encryption[" + codeIndex + "].Value") %>
<%: Html.Serialize("Encryption[" + codeIndex + "].ID", item.ID) %>
<% codeIndex++;
} %>
<%: Html.SubmitButton("Click meh!") %>
<% } %>
</div>
</body>
</html>
Model
[Serializable]
public class ProductViewBinding
{
public object ID { get; set; }
[NonSerialized]
public object _value;
public object Value
{
get { return this._value; }
set { this._value = value; }
}
}
Controller
[HttpPost]
public ActionResult Index([Deserialize] List<ProductViewBinding> Encryption)
{
return View("Index", Encryption);
}
It returns null when posted... but if I remove the [Deserialize] attribute it returns as it should but with the ID still encrypted.
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