MVC :: Using DataAnnotations To Verify Integer?

Sep 30, 2010

I am using Entity Framework with partial classes added on so I can use DataAnnotation attributes. Does anyone know how to add a data annotatin which will verify that a field is a whole number (or a DataType of int or long)? I'm surprised there is no [DataType(DataType.Integer)] attribute. I tried to create a custom attribute, but it doesn't work because the value it receives is always null:

[code]....

Obviously I'm missing the point, but I don't know enough to know what I'm missing.

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MVC :: DataAnnotations Does Not Work

Jan 18, 2011

I'm building an MVC 2 application with a MySQL database behind it. I've imported the model by adding an ADO.NET Entety Datamodel. Now I want to use DataAnnotations to validate the user input. So I have added the line

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However, It just doesn't do anything. The Model.IsValid() returns true no matter how long a string I submit.

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MVC :: Validating ICollection Using DataAnnotations?

Sep 1, 2010

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MVC :: Can DataAnnotations Persist Through Serialization

May 24, 2010

I am using business objects that are accessed via webservices. These objects can be loaded via the webservice and serialized to my mvc app. The mvc app can get a web reference to the objects and they can be utilized in the mvc app. However, the business objects are where the classes are defined, and where the annotations are applied.

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DataAnnotations On A DateTime Property?

Jul 15, 2010

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MVC :: DataAnnotations Enforcing A Value Is True?

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Disable DataAnnotations Validation On DefaultModelBinder?

Mar 16, 2010

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May 20, 2010

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MVC :: DataAnnotations Error Message Localization?

Feb 17, 2010

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Adding CSS Class To Field From DataAnnotations MVC 3?

Feb 2, 2011

Is it possible to add a CSS class from DataAnnotations (metadata) when I use Html.EditorForModel() - without a custom template...

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Here is a link to what I am referring to: [URL]

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MVC :: DataAnnotations Validation Suppose To Validate Like This?

Jan 30, 2011

I got a Category model and it looks like this

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MVC :: Custom Validation Against Repository With Dataannotations

Jan 11, 2010

I'm having problems with getting my custom dataannotations to work, I'm trying to add a validation-attribute that validates that the UsergroupName for a Customer (CustomerID) is unique.

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MVC :: 2 RC On 3.5 SP1 - Client Side Validation From DataAnnotations?

Jan 19, 2010

I have tried everything to get client-side validation to work in MVC2 RC, but have been completely unsuccessful. Server-side validation works just fine, but client-side never fires. I have grabbed

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from the futures source, since it wasn't included in RC. Unfortunately, that's the only script that people agree is necessary for everything to work. Besides that, nobody seems to know which other specific js scripts are needed. The candidates are (jquery-1.3.2.js, jquery.validate.js, MicrosoftMvcAjax.js, MicrosoftMvcJQueryValidation.js). I've tried every permutation of these and other scripts to no avail.

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MVC :: Html.ValidationMessageFor() Required Even If Using DataAnnotations?

Feb 10, 2010

I'm using DataAnnotations in my viewmodel class:

[Code]....

In my view I enabled client-side validation.

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So, is this the way it's supposed to work? Shouldn't enabling client-side validation highlight non-validating elements by default, without an needing to create an associated Html.ValidationMessageFor(), if it has a DataAnnotation validation attribute?

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MVC3 Deriving From DataAnnotations Attributes?

Jan 28, 2011

I have this working perfectly

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Generate DataAnnotations With Fluent API And ObjectContext?

Apr 4, 2011

I'm building an application using MVC 3 and Entity Framework 4. I've created my Entity Data Model and generated a database from it. Now I know the validation attributes such as [Required] or [StringLength(5)] can be used on the model properties to provide validation both clientside and serverside.

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MVC :: DataAnnotations And Model MetaData Caching?

Nov 1, 2010

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MVC :: Using DataAnnotations To Validate Creation Of A New Admin User?

Aug 10, 2010

I'm using DataAnnotations to validate creation of a new Admin user. However on EDIT page I want to have password and confirm password fields blank. This way i know that password has not changed. However whenever I EDIT a user I get ModelState.IsValid = false because password and confirm password are blank even though I set these in my controller. how would i fix this so that on EDIT screen I can omit "Required" validation?

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DataAnnotations Automatic Handling Of Int Is Causing A Roadblock?

Jun 2, 2010

Summary: DataAnnotation's automatic handling of an "int?" is making me rethink using them at all.Maybe I'm missing something and an easy fix but I can't get DataAnnotations to cooperate. I have a public property with my own custom validation attribute:

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C# - MVC3 System.ComponentModel.DataAnnotations And Association?

Feb 16, 2011

This part of code works fine

[Association(Storage = "profile", ThisKey = "UserId", OtherKey = "UserId")]
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but if i add in this class System.ComponentModel.DataAnnotations then, Association could not be found.

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MVC :: Using DataAnnotations As Well As Server-side Validation Logic?

Apr 6, 2010

I'm using DataAnnotations as well as server-side validation logic.

Is there a way to show DataAnnotation's client-side validation errors in the ValidationSummary, as it shows when returning from server validation?

I know I can use ValidateMessage and ValidateMessageFor next to elements, but the spacial design of the form I'm working with doesn't allow for anything other than highlighting the HTML element, however, I would still like to have a message saying what's wrong.

If I place ValidateFor's alongside ValidationSummary in order to mimic a ValidationSummary during client-side validation, they both appear when returning from a failed server side validation.

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MVC :: Can't Modify Auto-generated Files With Dataannotations

Feb 21, 2011

Split off from http://forums.asp.net/t/1654957.aspx/1?Validation+in+MVC+using+JQUERY+OR+JAVASCRIPT. Start new questions in a new thread.

Hey thanks a lot!!!

The following link worked fine http://geekswithblogs.net/stun/archive/2010/02/27/asp.net-mvc-client-side-validation-summary-with-jquery-validation-plugin.aspx

However, I am Having one other problem. There are four solutions in my project. All my controllers and Views are declared in the Presentation solution. There are auto-generated class files in the solution named DomainModel. So, my views inherits these auto-generated files from the DomainModel solution. The problem is that I can't modify these auto-generated files by using Data Annotations in there. Hence, cannot accomplish my validation. I tried by creating partial classes but no result. By creating a class file in my Presentation solution and then binding it with the view the validation works fine. But my views are binded with the class files (auto-generated) from the DomainModel.

Can you/anyone help me work it out so, that validation works with those classes without modifying it.

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MVC :: Custom ErrorMessage For DataAnnotations.DataTypeAttribute Not Works?

Mar 8, 2010

I'm not able to set errorMessage for DataType attribute.

Here is sample code :

[DataType(DataType.Currency, ErrorMessage = "Please enter a number")]

But in the ValidationSummary it is displayed:

The value 'sdf' is not valid for StartPrice. Other attributes like Required, StringLength or Range work fine.

I had to remove validationSummary and display messages with <%= Html.ValidationMessageFor() %> nearby input fileds but it is not the solution.

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C# - Adding DataAnnotations To Auto Generated DBML Class?

Feb 17, 2010

i'm worried about doing this since my changes will be overwritten when the dbml file is auto generated again (as they often are).

i'm thinking of doing a partial class and writing out the same properties to annotate them, but worried that it will complain about duplicates, and the reason i can't even experiment brings me to the second part of my questions...

... that, the expandable arrow on my dbml file listing is missing, right clicking and selecting "View Code" just displays an empty partial class as below...

Partial Class FPDataContext
End Class

I'm using VS2010 RC and am just developing an MVC 2.0 app where i want to be able to use the UI Annotations such as [UIHint("RelativeDateTime")]

edit:

here is my VB version edit as an example...

Imports System.ComponentModel.DataAnnotations
<MetadataType(GetType(CommentMetaData))> _
Partial Public Class Comment
End Class
Public Class CommentMetaData
<UIHint("PostedSince")> _
Public Property DateAdded() As DateTime
End Class

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Maxlength Attribute Of A Text Box From The DataAnnotations StringLength In MVC2?

Mar 5, 2010

I am working on an MVC2 application and want to set the maxlength attributes of the text inputs.

I have already defined the stringlength attribute on the Model object using data annotations and it is validating the length of entered strings correctly.

I do not want to repeat the same setting in my views by setting the max length attribute manually when the model already has the information. Is there any way to do this?

Code snippets below:

From the Model:

[Required, StringLength(50)]
public string Address1 { get; set; }

From the View:

<%= Html.LabelFor(model => model.Address1) %>
<%= Html.TextBoxFor(model => model.Address1, new { @class = "text long" })%>
<%= Html.ValidationMessageFor(model => model.Address1) %>

What I want to avoid doing is:

<%= Html.TextBoxFor(model => model.Address1, new { @class = "text long", maxlength="50" })%>

Is there any way to do this?

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