MVC Custom Dropdown From Model With Custom HtmlHelper?

Mar 31, 2011

i am just having a play with HtmlHelpers in MVC, very useful stuff and now i am trying to create one for dropdowns based on passing in a model ( any ) what the property is for the value and same for text.

so i have something like this:

[code]....

thats it

View 1 Replies


Similar Messages:

C# - How To Access Attributes Of Properties In The Model From Strongly Typed Custom HtmlHelper

Mar 18, 2011

I have a view that is strongly typed and its model is of type LogOnModel. That LogOnModel has anotated properties like this one:

[Required(ErrorMessage = "Please enter your password")]
[DataType(DataType.Password)]
[Display(Name = "Password", Description = "Your secreet password")]
public string Password { get; set; }

All of them has Display anotation with Display.Descripion property set. I want to create HtmlHelper extension method that will output <span> containg the value of Display.Description property. So for example if I called my extension method DescriptionFor than this code:

<%: Html.DescriptionFor(m => m.Password) %>

should produce following html: <span>Your secreet password</span>

View 1 Replies

How To Bind Form Collection Back To Custom Model Object That Uses 2 Custom Objects

Mar 23, 2010

What I'm trying to do is rather basic, but I might have my facts mixed up. I have a details page that has a custom class as it's Model. The custom class uses 2 custom objects with yet another custom object a property of one of the 2. The details page outputs a fair amount of information, but allows the user to post a comment. When the user clicks the post button, the page gets posted to a Details action that looks something like this:

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Details(VideoDetailModel vidAndComment) { ....}
[Code]....

The only fields on the form that is posted are CommentText and VideoId. Here is what the VideoDetailModel looks like.

public class VideoDetailModel
{
public VideoDetailModel()
{
[Code]....
I suppose if I added more form fields for the properties I need, they would get posted, but I only need 1 form entry field for the CommentText. If I could get the same Model objects value that were sent to the page to post with the page, it looks like the solution is rather simple. I think using the RenderPartial in the middle of a form is problematic somehow to how the form gets written in html. I can't really put my finger on why things went bonkers, but if I do my RenderPartials before my form and then begin my form with the text entry field and the hidden VideoId, the default ModelBinder works just fine. I was beginning the form, writing the hidden VideoId, rendering several partial views, create my CommentText field, and then closed the form out. The CommentText field would get bound just fine. The hidden VideoId would not. Maybe I missed a rule somewhere about using RenderPartial.

For completeness, the partial view I was rendering took a Comment object and just wrote out it's CommentText data. Several of these objects would exist for a single Video object. All of this data was in a custom type and passed into the View (the main view) as it's Model. This partial view did not have a form and did not have any data entry fields.

View 2 Replies

Forms Data Controls :: Custom Gridview / Insert The Custom Dropdown Button Using Server Control For Each Column?

Aug 18, 2010

i've created a webform with one gridview having connected with the database using datasource. i.e password database with three colomn .

now want to insert the custom dropdown button using server control for each column.

when i select the dropdown list the list should display the value as required.

e.g if i click the uname dropdownlist then it should show the list of names.

if i click on pwd dropdownlist then it should show the list of numbers.

if i select any one of the value in the dropdown list then it should insert into the

database.

can i get code on this type of question...?

View 3 Replies

MVC :: Creating Custom HtmlHelper Method

Mar 9, 2011

I have created a custom html helper as follow:

[Code]....

In my View, I am using it like this:

[Code]....

However, for some reason nothing gets rendered!

View 4 Replies

MVC. Extending HtmlHelper Versus Custom Class

Feb 16, 2010

What are the advantages of extending HtmlHelper instead of creating a Custom Class.

f.e. <%= Html.Table(data) %> vs <%= CustomClass.Table(data) %>

View 2 Replies

MVC :: Prevent Custom HtmlHelper's Html Being Encoded?

Jun 12, 2010

When you render one of the "built in" html helpers (say "TextBoxFor") with ":" (so it's encoded) it renders fine.However if I render the following (a custom file input helper) with ":", the markup are displayed.I understand why. Just don't know how to prevent this (no, I want to stay with ":" and not use "=")(I looked at the source code for the built in ones, but can't see what I'm missing: ttp://aspnet.codeplex.com/SourceControl/changeset/view/23011#288010 )

[Code]....

View 4 Replies

Making ReSharper Highlight Custom HtmlHelper Parameters?

Nov 18, 2010

In the new ReSharper 5.0 there is some MVC specific features for highlighting View and Controllers in views when you type them as strings.

So with ReSharper the string below called "ViewName" will get highlighted and clickable for navigation.

Html.RenderPartial("ViewName", model);

My question is if its possible to write custom patterns for custom extension methods. In my case i have a extension method called:

Html.RenderPartialIf(myCondition, "ViewName", model);

But when I do this ReSharper wont find my view. So can it be done?

View 1 Replies

MVC :: Access Model Validation Inside Custom Model Binder?

Sep 1, 2010

Is it possible, inside a Custom Model Binder, to fire "something" that "says" the value is invalid so it gets handled by validation part?

Basically, I am getting an exception when the value for the property is invalid.

View 1 Replies

MVC :: How And When Custom Model Validator Is Used

Apr 29, 2010

I am trying to understand a little more about implementing a custom model validator. I have implemented a custom model validator (derived from DataAnnotationsModelValidator<T>) for my custom validation attribute in order to do validation on the client side as well. There is not much documented about DataAnnotationsModelValidator. Besides, implementing client-side validation when is it a good idea or needed to implement a custom model validator for a custom attribute?

A separate question - in trying to understand how and when a custom model validator is used by the framework I noticed that my custom validator is always created with the context (2nd parameter in DataAnnotationsModelValidator<T>'s constructor) being a ViewContext, although it is declared as ControllerContext. Will a validator ever be created with something else than a ViewContext, and if so, when?

View 2 Replies

MVC :: Custom MetadataProvider And The Model Value?

May 21, 2010

'm building a custom MetadataProvider and I'd like to access the actuall model value in the CreateMetadata method.

[Code]....

When the current model value is of type string, the model value can be found in metadata.Model. But when the model is of reference type the value is null.

View 2 Replies

C# - Use Two Custom Model Binders?

Jul 15, 2010

So I have one custom model binder that inherits from DefaultModelBinder, where I am overriding the BindProperty() method to handle a type of field we've created. I also have one controller that we'd like to override BindModel() on, since we're handling an object in session for multiple views with that controller.

So I have CustomModelBinder : DefaultModelBinder, and then in the class where we override BindModel() i have that inheriting from CustomModelBinder. SpecialModelBinder: CustomModelBinder

But I have set a breakpoint in our override of BindProperty() in CustomModelBinder, and this never gets hit when using the controller that is also overriding BindModel(). Can I not inherit like this? What's happening here?

edit:
in global.asax:
ModelBinders.Binders.Add(typeof(ClassA), new SpecialModelBinder());
ModelBinders.Binders.Add(typeof(ClassB), new CustomModelBinder());
ModelBinders.Binders.Add(typeof(ClassC), new CustomModelBinder());
ModelBinders.Binders.Add(typeof(ClassD), new CustomModelBinder());
public class CustomModelBinder : DefaultModelBinder
{
// this will be hit in controllers that handle classes B, C, and D, but will not be hit in controller that handles ClassA
protected override void BindProperty(...){}
}
public class SpecialModelBinder : CustomModelBinder
{
// this will be hit when working in controller that handles ClassA only
public override object BindModel(...){}
}

View 1 Replies

MVC :: Custom Model Binding Is Not Working?

Feb 3, 2010

I am working on the example from Steven Sanderson's book 'Pro ASP.NET MVC Framework'. The cart class is coming up as empty in my Index action method of CartController class.

[Code]....

View 2 Replies

Custom Server Controls :: Custom Tag Not Found For Control / Error: Unknown Server Tag 'custom:AjaxValidator'

Jan 3, 2011

Hope this is the correct forum for this question. I am using VWD 2010 an have a web project and get the following error upon execution:

Parser Error Message: Unknown server tag 'custom:AjaxValidator'.

My code is as follows in the .cs file:

[Code]....
[Code]....

View 1 Replies

MVC :: Access Custom Model Inside ViewUserControl?

Nov 28, 2010

I want to pass custom param to my ViewUserControl using custom Model.

1. I have created model

[Code]....

2. I have created custom ViewUserControl

[Code]....

3. I am rendering my custom ViewUserControl and passing new Model

[Code]....

The problem is that I don't know how to get acces to my model instance inside my custom ViewUserControl

View 2 Replies

MVC :: Custom Model Validation Against Collection Of Instances?

Jul 22, 2010

i am creating a MVC2 application for pubs and bars. I have a model 'Opening_Time' with the following properties:

int Day,time OpeningTimetime ClosingTimeWhen adding/editing an Opening_Time, I want to validate an Opening_Time, to check the user isn't adding one for an existing Day (ie they can't have two entries for the same day).

How/Where is the best place to do this?

Preferably, I want to do it a Model level, so I can use Model.IsValid and the Html.Form helpers

View 3 Replies

C# - Get Model Associated With Corresponding View In HtmlHelper?

Nov 24, 2010

My View inherits Models.MyModel

<%@ Page Language="C#" MasterPageFile="Something.Master" Inherits="Models.MyModel>" %>

I need a property Model.Something to be available in a HtmlHelper method when I call it from this view.

<%= Html.CustomHelper(...) %>

Is there any way to access this? Maybe via ViewContext or ViewDataDictionary?

I do not want to explicitly pass Model.SessionKey for each helper I call.

View 2 Replies

Custom Server Controls :: Custom Composite Control With Custom Templated Child Controls?

Mar 22, 2011

I am trying to build a custom composite control, which allows me to add custom content to each child control. It's a similar concept to what you have with a GridView and TemplateColumn. The markup used to place the control on the page would end up being something like this:

[Code]....

I have the code below, which allows me to put that markup on the page without throwing any errors, and it renders all the correct HTML, except it doesn't render the contents of the ColumnTemplate. I have replaced the Render() code with a comment because it's quite long winded and doesn't add anything important here:

[Code]....

I have tried to follow examples on MSDN and other forums but I can't make this work. I think I'm missing the code to render the contents of the template, but I don't know how to hook that up.

View 1 Replies

MVC :: How To Reuse Model Metadata For Custom View Models

Oct 19, 2010

I'm working on an ASP.NET MVC 2 project with some business entities that have metadata dataannotations attributes applied to them (Validation attributes, Display attributes, etc.).

Something like:

[Code]....

Using the metadata from different views is no problem, as long as I am using my business entities as viewmodels or as part of a viewmodel like this:

[Code]....

However, sometimes I need to code a view for editing some, but not all fields of an entity. For those fields I want to reuse the metadata already specified in my user entity. The other fields should be ignored. I'm talking about custom view models like this:

[Code]....

That's where I am running into problems. The custom view model above leads to an exception when the view is generated, because it has no password property.

The associated metadata type for type 'Zeiterfassung.Models.ViewModels.Users.UserNameViewModel+UserModel' contains the following unknown properties or fields: Password. make sure that the names of these members match the names of the properties on the main type.

Also, even if this exception did not occur, I expect to get into even more trouble with model validation on form submit because Password is marked as required in my business entity.

I can think of several workarounds, but none seem really ideal. In any case I can't change the database layout so that the password field would be in a separate entity in my example above.

How would you handle this scenario?

View 3 Replies

Custom Model Binder For DropDownList Not Selecting Correct Value?

Sep 4, 2010

i've created my own custom model binder to handle a Section DropDownList defined in my view as:

Html.DropDownListFor(m => m.Category.Section, new SelectList(Model.Sections, "SectionID", "SectionName"), "-- Please Select --")

And here is my model binder:

public class SectionModelBinder : DefaultModelBinder
{
public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
if (bindingContext.ModelType.IsAssignableFrom(typeof(Section)) && value != null)
{
if (Utilities.IsInteger(value.AttemptedValue))
return Section.GetById(Convert.ToInt32(value.AttemptedValue));
else if (value.AttemptedValue == "")
return null;
}
return base.BindModel(controllerContext, bindingContext);
}
}

Now within my controller i can say:

[HttpPost]
public ActionResult Create(FormCollection collection)
{
var category = new Category();
if (!TryUpdateModel(category, "Category")
return View(new CategoryForm(category, _sectionRepository().GetAll()));
}

This validates nicely and the correct value for the section is assigned when the model is updated, however it does not select the correct value if another property doesn't validate.

View 1 Replies

Mvc Custom Model Binding In An Update Entity Scenario?

May 18, 2010

I have a question about model binding. Imagine you have an existing database entity displayed in a form and you'd like to edit some details, some properties eg createddate etc are not bound to the form, during model binding, these properties are not assigned to the model as they are not on the http post data or querystrong etc, hence their properties are null. In my controller method for update , Id just like to do

public ActionResult Update( Entity ent)
{
//Save changes to db
}

but as some properties are null in ent, they override the existing database fields which are not part of the form post data, What is the correct way to handle this? Ive tried hidden fields to hold the data, but model binding does not seem to assign hidden fields to the model.

View 1 Replies

ADO.NET :: Write Custom Functionality To Access The Model (POCO) Metadata

Dec 7, 2010

I was wondering if anyone can point me in the right direction? I have a POCO model and I am using Code First CTP. In my application, I set the database to be recreated whenever the model changes.

I would like to write custom functionality to access the model (POCO) metadata same way as EF sees it and use that to generate some source files (using T4). I would like to access the processed model not having to worry about finding properties that hold primary keys or any other conventions (implicit or not). What is the way to go about it?

View 2 Replies

Custom Model Binder Option In MVC 2 RC - How To Iterate Over Form Values

Feb 2, 2010

I'm using the MVC 2 RC. I have a custom model binder that used to iterate over posted form values in MVC 1.0 like this:

[Code]....

View 2 Replies

MVC :: Custom Login Module With Stored Procedure Ado.net Entity Model?

Dec 16, 2010

I am new to MVC framwork and have a big project on my hand.The MVC given a inbuilt membership provider .But I want to a custom database account management of users like admin user,subadmin user and site users.provide me functionlity(total step by step ) about login module with work with stored procedure and how i validate valid user login in the site and redirect from home page with displaying username etc.

View 3 Replies

MVC :: Html.RenderPartial Appears To Be Stripping Model Of Custom Attributes

Aug 27, 2010

I have implemented a custom ModelMetadataProvider so that I can decorate my view models with some custom attributes and everything was working fine until I made use of a Partial View. The following code in my view works fine: -

<%: Html.DisplayFor(x => x.Results) %>

Results is a List which renders a custom display template and is also decorated with a custom attribute. Using breakpoints, after the above line and prior to the code within the custom display template, the overridden CreateMetadata method in my custom ModelMetadataProvider is invoked. If I look at the attributes collection parameter I can see that it does contain my custom attribute thus everything working as expected. However, if I replace the above with the following line of code in my view then it breaks: -

<% Html.RenderPartial("ApplicationSearchResults", Model.Results, new ViewDataDictionary()); %>

All the Partial View contains is: -

<%: Html.DisplayFor(x => x) %>

Again using breakpoints, after the above line and prior to the code within the custom display template, the overridden CreateMetadata method in my custom ModelMetadataProvider is invoked. But this time if I look at the attributes collection parameter my custom attribute is not there.

View 4 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved