Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. My view contains the corresponding Children list. I have a check in the Razor to see if Children is null:. But if count is 0 then both span classes are shown. How can I only show one of the above spans if there are zero Children? Learn more. Asked 5 years, 4 months ago. Active 9 months ago. Viewed 20k times. I have a check in the Razor to see if Children is null: if category.
Active Oldest Votes. Try this:- if Model. Kartikeya Khosla Kartikeya Khosla Count' cannot be used like a method. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password.Razor is a markup syntax for embedding server-based code into webpages.
Files containing Razor generally have a. Razor is also found in Razor components files. HTML markup in. When an symbol is followed by a Razor reserved keywordit transitions into Razor-specific markup.
Otherwise, it transitions into plain C. HTML attributes and content containing email addresses don't treat the symbol as a transition character. The email addresses in the following example are untouched by Razor parsing:. With the exception of the C await keyword, implicit expressions must not contain spaces. If the C statement has a clear ending, spaces can be intermingled:.
The following code is not valid:. Generic method calls must be wrapped in an explicit Razor expression or a Razor code block. Explicit Razor expressions consist of an symbol with balanced parenthesis. To render last week's time, the following Razor markup is used:. Implicit expressions, described in the previous section, generally can't contain spaces. In the following code, one week isn't subtracted from the current time:. Explicit expressions can be used to render output from generic methods in.
The following markup shows how to correct the error shown earlier caused by the brackets of a C generic. The code is written as an explicit expression:. C expressions that evaluate to a string are HTML encoded. C expressions that don't evaluate to IHtmlContent are converted to a string by ToString and encoded before they're rendered. Using HtmlHelper. Raw on unsanitized user input is a security risk.I have a Razor view of type Joke.
Here is the relationship between the Entity Joke and the Entity Rating:. I have done eager loading in my HomeController to get the Ratings from the Database. But I seem to be unable to get a count of the ratings that belong to a particular joke. Here is the error I get:. Ratings is a collection of Ratings?
I'm not really sure if it is returning a List of ratings. But based on my table associations I expect it to! ToList ; and just use Count in your view. Feb 23, PM joelkronk hotmail. Category, and recieved a rating of joke. First of all you're passing a query to the view.
Razor syntax reference for ASP.NET Core
Pass a list. That's way I've said to return View jokes. In your view in a foreach statement call joke. This is what I meant to say. No Worries! It is the funniest, cleanest and tidiest palce on the web. A website guaranteed to bring you a laugh. Raw item.
Name Jokes. Generic; using System. Linq; using System. Web; namespace LaughterNode. Feb 24, PM joelkronk hotmail. Do you have any duplicate rows in your web. Did you upgrade this project from a earlier version of. Are you saying something is fundementally wrong here?
No I haven't upgraded from an earlier version of. As for having Duplicate rows in my web. I haven't really touched web. I didnt see the context where you were using item. Count, but if you are putting it in a foreach loop it will break, there is only one item at a time in the foreach loop for the 'Rating' field unless its a collection inside a collection so you will not get a count of that since count is meant to be used on a collection.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have added IF condition to only draw table if model count is equals to 5 but still if model contains no data then it gives error that:.
Index was out of range.How to calculate sum of value in one column of all rows table in docteurbasti.pw CORE
Must be non-negative and less than the size of the collection. Parameter name: index.
ASP.NET MVC - Razor
This is your issue. Without further addo, edit you line:. You aslo seem to be mixing razon and webforms syntax. If Model is Null then accessing to the count would be throw an exception. Learn more. Asked 6 years, 8 months ago.
Subscribe to RSS
Active 6 years, 8 months ago. Viewed 10k times. ElementAt 0. ElementAt 1. ElementAt 2. ElementAt 3. ElementAt 4. Parameter name: index What is wrong with IF condition?Last post Jan 12, PM by ignatandrei.
My View must display a summary of orders per customer. When the ActionLink is clicked the individual records, making up the customer's order, must be posted back and processed by the controller. The query to produce above is quite large and the exact same query except that it'll be for one customer at a time and it won't be grouped will have to be executed to select the records to Process the Orders.
Sine I have already generated the query to produce the view above; When the user selects "Process Orders" I should be able to post the model back and apply a filter on CustomerId before processing the items ordered in the controller.
If my approach above it correct, I have to group, count and sum the items in my View The view can make anything with the data that is sent to him. The model, with all the records, are passed to the view Print Share Twitter Facebook Email.
Related Links Guidance Samples Videos. Basquiat Participant. Price Html. How do you count and sum in the Model? Does the Model have all data neeed? NET Teacher. NET Videos 5 minutes.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I was wondering is it possible to do a counter for the number of items in a model, i know using list it is possible, but id prefer to use IEnumerable for the project purpose.
Learn more. Asked 5 years ago. Active 2 years, 2 months ago. Viewed 27k times. Count ; return View Model. Matchbox Matchbox 2 2 gold badges 11 11 silver badges 31 31 bronze badges. I am asking that where you want to display the count.
If you want it in action method, why don't you just use Model. Countbecause you are already converting Model to List before passing to view, right?
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. If I put a breakpoint on Model. ToString ; I can see that that expression has the value that I need, but I cannot see it when the page gets rendered - Am I missing something in my syntax?
You need to add sign before Model. ToString to let Razor know that you are outputting something. Otherwise it will treat it as ordinary method call. Learn more. Asked 8 years, 8 months ago. Active 7 years, 9 months ago. Viewed 29k times. Thank you. G-Man G-Man 6, 17 17 gold badges 63 63 silver badges 92 92 bronze badges. Active Oldest Votes. Eranga Eranga That is exactly what I was missing!
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.
Email Required, but never shown. The Overflow Blog. Featured on Meta. Feedback on Q2 Community Roadmap.
ASP.Net MVC Razor Sum and Count functions?
Technical site integration observational experiment live on Stack Overflow. Question Close Updates: Phase 1. Dark Mode Beta - help us root out low-contrast and un-converted bits.
Related Hot Network Questions. Question feed.