I am trying to get validation to work for my very first ASP.NET MVC application. My problem is that all my controls were dynamically created. I have a Telerik tabstrip that has tabs that were dynamically (or programmatically) added. Each tab has a partial view with controls. The model that those controls map to is an Entity Framework model. I have decorated the model properties with annotations like “[Required]” (from System.ComponentModel.DataAnnotations;) and have added controls like Html.ValidationSummary and Html.ValidationMessageFor (for each field in your model) and I've been told it's supposed to work like magic! But it doesn't :(
Any ideas why my validation is not working? Do I have to do something special because the controls were created dynamically?
Steve
P.S. BTW, the server side validation works, but not the client side.
You need to store the datatypes and override the Validate() method on the Model. And verify casting works with the stored datatypes and the values of the dynamically created controls.. if the cast doesnt work return a validationresult.
Related
The idea is to create an app in Xamarin with dynamic forms. The form definition is taken from any source like local DB or Web API.
The definition contains the set of fields and theirs's default values.
Currently my question is about view model.
Let's say the situation is clear with a view. I mean that user controls can be added to a view programmatically based on the form definition.
But how view model should look like in this case?
As a set of dynamic properties ? How to support user controls binding to respective view model properties ?
Any ideas or links to respective articles are welcomed.
Thank you in advance.
I am fairly new to .NET and MVC3 - and even Ajax and Json, and am working on an MVC3 (razor) application, using jqGrid, and so far it is immense(jqgrid that is!) and has dealt with everything I have thrown at it.
However, I have One Outstanding peice of functionality that I do not know How to accomplish.
Within the Edit form of a Row, I have Placed a Custom button called 'Reset Password'. I need the Onclick Event to call a piece of functionality in my Controller to go through some logic, generate a Password, and Return the new Password to the Screen.
Can anyone tell me How can I achieve this?
May thanks in Advance.
You can return a partial view result or json data from the action.
See the partial view approach here
I'm using microsoft ajax and ajax.beginform.
It's working great for model binding my partial view, but I need to conditionally disable some of the buttons in my form itself depending on what comes back from the server.
How can I go about this without using JQuery?
Have you thought instead about using two separate views instead, and have your conditional logic in your controller determine which view to display.
I am new to MVC3. In asp.net user control, its fairly easy to create a user control that has a combo box with a button, with hover over event, and a collection property of combo box that then displays a list
how do i achieve this user control (partial view) in mvc3?
What you are looking for is helper methods. You can see a good explanation of it here. In that post, there is a great link for how to do this: Creating Custom HTML Helpers.
I am also a WebForms developer originally, and I had a hard time making the connection between user controls and HTML Helpers. This should give you enough guidance to get started with what you want.
Hover over event can be done using jQuery, your combo box just needs to have a CSS class in the partial view and then the even can be hooked up to that selector.
The Collection property will be inside the View Model that your partial view binds to.
I am using the Telerik menu control in MVC3 with Razor. I noticed that the documentation on the Telerik website says it is possible but does not show how to bind the menu control to a stored procedure.
Has anyone had success doing this?
Data binding to a model seems the best way. So just design a view model that will represent your menu data and simply have your controller action call the stored procedure and populate this view model from the results of it.
It depends which ORM you are using. What telerik controls required is a model you populate you model using stored procedure as described by the ORM you are using and rest is the same. This link may give you some starting idea