After upgrading to MVC 3 RTM I get an exception where it previously worked.
Here is the scenario. I have several objects that use the same underlying interfaces IActivity and IOwned.
IActivity implements IOwned (another interface)
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I've made an interface called ApprovalEvent in a separate file with the namespace myproject... I've also made a class called PurchaseOrder... it's also in the same namespace, just in a separate file. Whenever I try to make PurchaseOrder implement ApprovalEvent it always says that ApprovalEvent is undefined...
How can I make the class recognize that the interface exists but is in a different file?
Here's some code:
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Im my MVC 3.0 Application, I created a helper like below;
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And I used that helper in a linq query as below;
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When I fire my app, it gives me the below error. LINQ to Entities does not recognize the method 'System.String GenerateURl(System.String)' method, and this method cannot be translated into a store expression. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NotSupportedException: LINQ to Entities does not recognize the method 'System.String GenerateURl(System.String)' method, and this method cannot be translated into a store expression. Source Error:
Line 43: public Blogs GetBlog(string urlstring) {
Line 44:
Line 45: return GetAll().SingleOrDefault(x => BlogUrlGeneration.GenerateURl(x.ArticleTitle).Equals(urlstring));
Line 46: }
Line 47:
İn my blog, the link will be like below; [URL] so I need to set the above urlgenerator class into lambada. How can I do that? What would it take to make that work perfectly
I would like to extend the HtmlHelper by using metadata (similar to DataAnnotaions metadata). Specifically I want to be able to add a 'Title' attribute to html controls that will then appear as a tooltip on the control. I would like to keep the tooltip text with my model, for example by adding 'Tiltle' metadata to the model as follows:
[DisplayName("User Id")]
[Title("Enter your 10 digit user id")]
property UserId { get; set; }
So the questions are:
1. How do I add metadata (such as 'Title') to my model?
2. How do I access this metadata in my HtmlHelper extension method?
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I build a gridview View with a generic model type, because the actual model can be anything.
My model is of type: IModelContainer<IModel>
And the definition of that interface is:
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In my grid.cshtml i need to get all the propertynames to use as columnheader, but i do not know them beforehand.
I use the following code :
[Code]....
This works perfectly when there is at least 1 row in the Items list, but how do i get propertynames, when there is no data?
I can get the typeof the actual class implementing the IModel interface via a property on my IModelContainer interface if needed, but i don't know how to go from there.
How do I do 'ModelMetadata.FromLambdaExpression(x => x.Books[0], ViewData)' with FromStringExpression?
I tried 'ModelMetadata.FromStringExpression("Books[0]", ViewData)' but it seems it doesn't understand index notation.
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How can i get full name of the property ?
Is it possible to change Properties of ViewData.ModelMetadata in Controller?. For example, can I do the following to change the display information of the LogOnModel:
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When I do that there is no errors but DisplayName is not change. I'm trying to localize strings to different languages and also to make some attributes of the model different depending on users roles.
So I'm coding up a simple blogging/content application in MVC2. In my EF domain model I have an abstract entity named "Resource" which serves as a base class for any content that can be published. I have entities named "Picture", "BlogEntry" and "Event" which all inherit from "Resource".
My problem is, it seems it doesn't make collections for Pictures, BlogEntries and Events. I only have a collection of Resources. How can I get collections of the inherited classes? Is it something I'll have to create myself? If so, how?
This is my first post in this forum and I want to congratulate all the ASP.Net MVC team for this great framework.Somedays ago, I saw the new ASP.Net MVC 2 Model Validation, following the instructions from Scott Gu blog...I found something interesting that I don't know if it's an expected behavior or a bug.My Model class is inherited, so I have something like this:
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I have an descendent of this class with some more properties, and the validators for ASP.Net MVC:
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Then I found that the Client validation don't work for the inherited property
I have created inherited textbox control using windowscontrol library project.the code is here:
Public Class MyTextBox
Inherits System.Windows.Forms.TextBox
Public Property sanText() As String
[code]...
I have "inherited" an ASP.net 2.0 VB project and have been given a list of items the customer wants changed. This is not my original work, I've "inherited" it from another coder who went AWOL. The customer just wants the site to work, but has found a few issues that need to be changed. Unfortunately, the project is over budget and is about a year overdue. Thus, there's no time to update it to .Net 3.5.
I started using Reflector and have a fair understanding of the classes and methods defined. What techniques have you used when modifying an existing codebase? Do you re-create according to your practices and methodology, or try to adhere to what the previous coder did?
I implemented a lot of ASP.NET controls inheriting controls from existing control library. My problem is that I can't use existing library themes/ skin files for skinning my controls. Is there a way to use existing skin files in inherited controls? Changing parts or renaming skin files is not an option. I could read data from skin file and then apply it to control programatically. Is there some kind of API for reading skin files?
View 1 Replies<div runat="server" enableviewstate="false">
<div runat="server" enableviewstate="false"></div>
</div>
What happends if I won't set the enableviewstate property for the second div. Is it inherited from it's parent or not ?
i want to disable validation controls on some conditions. how can i find that a control is inherited from "BaseValidator"?
note all validator controls are inherited from BaseValidator (+)
Just wanted to know if a singleton class could be inherited and derived.
View 2 RepliesI'm building a web app that will keep a events in a database and add the event to a Google calendar on insertion.
I have three types of events, PendingEvents, ApprovedEvents, and DeniedEvents. I'm using single table inheritance through LINQ-to-SQL, with the Event class being abstract and the 3 types inheriting from it
Each type of Event is stored in calendars differently. I would like to use an abstract member function in Event called AddToCalendar.
I'm trying to set this up in a separate class file because I'm using the LINQ-to-SQL designer and I don't want these to be overwritten if I change the LINQ diagram.
However, I get an error from all three inherited classes that "'WebCal.ApprovedEvents' does not implement inherited abstract member 'Edu.Northwestern.WebCal.Event.AddEventToCalendar()' WebCalendarWebApplication1App_CodeWebCalDataSource.designer.cs"
It looks like it won't check my outside file and only looks at the designer.
The non-designer partial class file looks something like this:
public partial class WebCalDataSourceDataContext : System.Data.Linq.DataContext
{
a is my master page, b is the aspx page inherited from a.
a: i have included this js file for jquery work
<
script
src="inc/scripts/JQuery/JQ
UI 1.8.9/jquery-ui.min.js"
type="text/javascript"></script>
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For example i need create page to display few models. Inherits property can take in only one value, as i mean.
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I want something like:
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Currently, I am accessing the property by creating a static method like the one below.
public static class CartCollection : List<Cart>
{
public static void Add(Cart Cart)
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Here is my simple class, where i inherit from UserControl.
public class Test:System.Web.UI.UserControl
{
public void BindGrid()
[code]...
I am new to MVC and I am trying to create my own extension method so that I can add onto the html helpers that are available in my razor views. Html.DropDownListFor() lets you create a drop down list for any propery on your model. I would like to create a helper called Html.StateDropDownListFor() that does the exact same thing, except loads the drop down with all 50 US states. This way I don't have to create a SelectList for every single state drop down that I create. What is the easiest way to do this? Right now I have this:
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Am I even close? I don't want to rebuild a whole text box helper, I just want to create a helper that utilizes the existing text box helper but does the SelectList for me. That way in my views I could just do Html.StateDropDownList(x => x.State)
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How can I call HtmlHelper methods outside of a view? I want to call Html.ActionLink from a C# method. Then use Response.Write to write the output from ActionLink to the output stream of a view. Is there a server side equivalent of HtmlHelper.ActionLink?
View 1 Repliesi am tryin to make an inherited custom label control.
what i want is i want to have a property for the label where one can select languages.
like <label id="lbl" language="">
so when the user gives "language" property he must be provided with an option of "EN" and "AR" like an intellisense.
I have my own custom class which inherits from DropDownList. Is there a way to override Items.Add procedure? How?
View 2 Replies