MVC :: Multiple Forms On The Same Page / How To Handle (including Validation From Model)

Jan 12, 2010

It should be simple; although I'm having a hard time to figure out the best way to do it. I've MVC2 pages with multiple forms on the same page having different functionalities.

What's the best way to handle this; including the MVC2 way of validation from the model?

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MVC :: Multiple Model Validation In Same View?

Jul 10, 2010

I have a Order view with 2 user controls in it.

The first user control in the view is just to validate the customer and get some more details about the customer. This control is having one text box (customer name) with the button. When the user clicks the button it should validate the customer name in the client side using data annotations of customer model. if validation success then it should use some bussiness logic to verify the customer and show the customer details on the form.

The 2nd user control in the view is to get the address of the customer by searching for the house no and the postcode. This control is having 2 text box with the button.

The first user control is based on the strongly typed customer entity

The 2nd user control is bsed on the strongly typed address entity

The view with both the user control is based on the strongly typed order entity.

The issue here is with the validation. I have the validation summary in the view and client sider validation is enabled. When i click the search button on the first user control the client validation starts and throws validation error messages because when i search for the customer at that point of time i will not have values to may of the customer related fields in the order view.

The same thing happen when i click the search button on the 2nd view. It will throw client side validation for other fields.

What i want to achive is that when the user click the search button on the user control 1 then the validation should happen only to the customer name field (both in client and server).

When the user click the search button on the 2 nd user control the the validation should happen only for houseno and the postcode both in client and the server.

When the user clicks the save button on the order view all the fields in the form even the controls usere input fields should get validated. How to achive this in mvc?

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MVC :: Multiple Instances Of Same Partial (with Same View Model) Messes Up Validation?

Jan 27, 2011

This project I'm working on have this custom clientside JavaScript validation framework created for (which I cannot change) that show error messages/summary based on your data annotations and a "Validate" method in your ViewModel.

Like I said I'm not allowed to change this, so wont be able to go with suggestions doing that.

What the person that created this did not foresee, is that one might need put several partials of the same type and having the same view model (each in a form) on a view.

So I went ahead and did things the normal way (using Html.whateverFor<model => model.whatever) and wala!....the custom validation thing throws error messages for the specific form fields, next to each form in the view. I was suggested to create a "prefix" for each instance of the view model, and do something like this:

Change: <%: Html.HiddenFor(model => model.AccountNumber)%>

To: <%: Html.Hidden(Model.ElementPrefix + "AccountNumber", Model.AccountNumber)%>

Not to mention the tons of jquery selectors and all that I have to go change (and all my view inputs)

(I just hate having to find workarounds for this "custom" everything they created for this project)

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How To Handle Every Request To A Folder (including Requests To Subfolders Within)

Jan 27, 2010

I have a folder structure that is odd and I need to find a way to deal with. Example, if you go to, I would like to have a script in the /x folder that grabs all incoming requests, even if the request was to /x/y/filename or /x/y/z/1/2/filename. Is it possible?

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Handle Multiple Forms Post Action Under A Parent Form For Same Aspx Page?

Jul 27, 2010

I have an application in which I have a parent form and in that on load I am adding sub forms dynamically having a submit image button..

When I am clicking the button of one form then I am able to read the hidden variables using request under parent form .But on clicking the second button the hidden variables of parent form are having null value although i have assign the value to them using context variables.

how can i handle mulitple form action for same page

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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.

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Mvc Client Side Validation On Multiple Forms In One Page?

Mar 20, 2010

I have 4 forms in my mvc view.I have enabled client side validation on each by put <% Html.EnableClientValidation(); %> Above Html.BeginForm()of each form.The issue is that regardless of the fact that I've specified ID's for the forms the first form on the page gets validated whenever I click submit of the other forms.
Is this usage supported?

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Model Binding Multiple Data Sources On One View Page?

Feb 23, 2011

I have one view page (MyView.aspx) and many data sources to bind on this page. Lets say it has Books, Publishers, Comments, etc. Each one of those has an object which provides a List, List, etc. In my view, what are my optiosn for multilple model biding? I want to check to see if each one is empty, and then enumerate it. But I can't check Model.Count() because wouldn't Model be made of all those objects if I set the page to inheriet from? What are my options? Should I load each content area in a control/partial view? Or can I just dump each object into ViewData and then check the count by casting in the view?

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MVC :: Validation Of Model In Side Model

Oct 12, 2010

I have recently started working on ASP.NET with MVC 2 framework, and I am facing following difficulty in validating my data,


In my application the view (ASPX) is divided into tabs (jQuery) and each tab's content is ViewUserControl (ASCX). The main model for the view has collection of sub models for individual tabs. I use RenderPartial method to render view user control.


And the user control (Tab1.ascx) refers the specific model for it,


Now if in my Tab1Model if I put following validation


In the controller ModelState.IsValid is always indicates TRUE. How do I override the validation behavior such that it as well looks the items in the collection member (which holds sub models) as well.

<%= Html.ValidationMessage("FirstName") %>

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Handle A Model With A Lot Of Drop Down Lists In Mvc?

Dec 8, 2010

I have a model with a LOT of foreign keys. Right now, I'm populating view data:

ViewData["fieldname"]=new selectlist(entityframeworkmodel.foreigntable.ToList(),"fieldkey","valuefield");

I really don't like this approach. For one thing, I'm supposed to just name the field the same thing and trust that it will get stored in the model. I don't really understand how that works but it's a little worrisome.

Secondly, my code is now a bit of a mess.

//Address drop downs
ViewData["AddressType"] = new SelectList(ent.tblAddressTypes.ToList(), "AddressID", "AddressType");
//Contact Drop Downs
ViewData["ContactTitle"] = new SelectList(ent.tblContactTitles.ToList(), "ContactTitleID", "Title");


The other issue is I don't see how I can test this. I've written a repository method that just maps the id values from the drop downs into the respective EF objects.

How are other people dealing with this? I do set up these drop downs in a few places, so I thought about putting them in a controller method.

P.S. Kind of thinking about this: [URL]

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Web Forms :: To Handle The Validation To Check The File Size?

Oct 26, 2010

In my application the user uploads three files ( Resume, Cover Letter, Selection Creteria).

I want users not to upload more then 4 MB files, so In my web.confing file I have allowed max of 5 MB. <httpRuntime maxRequestLength="5000"/>. I did this so that I can validate the file and give user a message that they are trying to upload more then 4 MB file.

It all works fine if the user is only uploading resume. But if the user uploads all three files of size 4MB then my validation does not work and it goes to connection time out.

How can i handle the validation to check the file size of all 3 files?

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C# - MVC Handle Drop Down Boxes That Are Not Part Of The Model?

May 21, 2010

I have a small form which the user must fill in and consists of the following fields.

Name (Text)
Value (Text)
Group (Group - Is a list of option pulled from a database table)

Now the Model for this View looks like so,

public string Name { get; set; }
public string Value { get; set; }
public int GroupID { get; set; }

Now the view is Strongly Typed to the above model.

What method would one use to populate the drop down list? Since the data is not contained within the Model (It could be contained in the Model) should we be using Temp/View data? A HTML Helper? What would be the ideal way to achieve this.

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Forms Data Controls :: Handle Multiple DataKeyNames?

Mar 17, 2010

I have these line of code:

When i debug i get an error that says: 'System.Data.DataRowView' does not contain a property with the name 'job_id'and sometimes 'System.Data.DataRowView' does not contain a property with the name 'pub_id'I need to get the appropriate value for the selected row. GridView only output Jobs results or Publishers results, the problem is when the user clicks select button beside the record, i get the error i mentioned above.

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C# - How To Handle Validation When JavaScript Is Disabled

Apr 4, 2011

I'm using some of the typical ASP.NET's Validation Controls in my website. Now I'm trying to disable the JavaScript in my browser to test my application and of course the Validation Controls no longer works. I think it's best to try to make them work using one of the solutions down here instead of reinvesting the wheel and build a validation layer for the page or my objects -Am I thinking right?-

What do you think of these options and why:

Include in clicked button's event a code to check if the page is valid and if not explicitly call the Page.Validate(); method Check if whether the JavaScript is enabled and if not I should call Page.Validate();

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Web Forms :: Master Page Validation Effects Content Page Validation?

Jul 8, 2010

I have a search control in my master page with the following validation on the search btn's OnClientClick:


Then in the content page I have various controls with validation and a validation summary. I have few custom validators on the content page like below:


which uses the clientvalidationsfunctions which set the validity of the page.Now when I leave the search box in the header blank and I click the submit btn in the content page it posts me back to same (source) page and while debugging I find that the Page.IsValid is false. But if I write something in the search textbox in the master page and the fill the required fields in the content page and click the submit btn in content page it works fine. Why is that so? My validation groups are different on master page and content page.

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Web Forms :: How To Handle SQL Column With Multiple Comma-delimited Values

Jan 25, 2011

I've inherited an SQL table with a column named "product_codes." It contains 1 or more 4-digit numerals separated by commas (for example, the first record in the table has this in the "product_codes" column:0010,0810

There's a second table containing those product_codes and their corresponding names in a column called "product_name"

I'm trying to set up a FormView that will display an individual record and allow the user to update the record. But when attempting to display a record that has multiple values in the "product_codes" column I get an error, presumably because it can't map the product code to the product name.


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C# - How To Handle Input And Parameter Validation Between Layers

Mar 5, 2010

If I have a 3 layer web forms application that takes user input, I know I can validate that input using validation controls in the presentation layer. Should I also validate in the business and data layers as well to protect against SQL injection and also issues? What validations should go in each layer?

Another example would be passing a ID to return a record. Should the data layer ensure that the id is valid or should that happen in BLL / UI?

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MVC :: Model Validation For File Upload?

Aug 17, 2010

My MVC 2 app includes a simple file upload within in a strongly typed view and I am trying to figure out how to apply model validation to the file name. Is this possible? Is there better way to do file upload within an MVC app?

The salient parts of the (prototype) controller code are:


The Create view code was generated with VS2010 and then modified to support file upload and client side validation:


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Localize Default Model Validation In Mvc 2?

Jul 1, 2010

[DisplayName("my date")]
public DateTime? DateReg { get; set; }

so if the user is going to pass in an invalid datetime value he will get this message "The value '02.07.201022' is not valid for my date."

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MVC :: Validation For String Array In Model?

Mar 25, 2011

I am using an array to keep track what checkboxes a user has clicked.


However, validation doesn't seem to work for this field. This is how I am rendering it in the view:




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MVC :: Validation With Model As Property To ViewModel?

Jan 11, 2011

I have a viewmodel with a property of a model class type. I set some properties in the model class to be able to show it to the user but then when I make a post, the model gets validated. How to overcome this? I don't want to enforce the DataAnnotations contraint in this case....

public class TheViewModel
TheModel TheModel { get; set;}

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C# - Model Validation With ViewModel Don't Works?

Dec 9, 2010

I use viewModels to communicate between my controller and my view. To get model validation, i use a partial class like this :

public partial class Evaluation
public class EvaluationValidation
[DisplayName("Title of evaluation")]


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MVC :: Controlling Order Of Model Validation?

Jul 6, 2010

With my model, I have one view model using another as its base. In my case, BaseUserModel is inherited by CreateUserModel, in order to share common properties such as Username and Password. My CreateUserModel adds to that by having ConfirmPassword, Email, SecurityQuestion, etc.

My problem is, when using the ValidationSummary() Html helper, the validation is obviously in order of the properties in my model. Basically, because of the inheritance I have going on here, the errors are not in the correct order.

Is it possible to control when or how these validation rules are added to the list? The only attribute I'm using is Required.

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Getting The Full Url Of Page In Code Behind Including Querystring?

Jan 24, 2011

I´m trying to get the full URL from a page including querystrings. It works as long as the querystring is lower then 10. If it contains more than one number it does not work.

I try:

Dim v As String = Request.QueryString("kund")
Dim myDescription As String = "Ring kund " & " " & "Http://backup/heat/Dial/kundkort.aspx?kund=" & v & "url: " & Request.Url.AbsoluteUri

It will not work unless here is only one digit in the querystring. It works in my other codes for selecting data from a table etc.

If I would try the URL http://backup/heat/dial/kundkort.aspx?kund=86

my output will be:

Ring kund , Http://backup/heat/Dial/kundkort.aspx?kund†url: http://backup/heat/dial/kundkort.aspx?kundâ€

It is justa cross sign instead.

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Binding Multiple Forms To Single Model Using Default Binder?

Jun 10, 2010

I have a complex page with several forms on it. The page is divided into sections, and each section has a continue button on it. The page is bound to a pageViewModel, each section addresses a different set of properties on the model. The continue button makes an ajax call to the controller, and the model binder binds it appropriately to the appropriate sections of the model. The section is refreshed appropriately. Finally, I would like to have a save button at the bottom of the page that takes all the forms, and binds all of the forms to the model. The model, at this point has all of the properties filled out, and can be processed accordingly. Can I accomplish this by some ASP MVC magic?

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