I am using Razor and MVC 3 WebGrid in ASP.NET MVC 3 Beta.
I have the following:
[Code]....
I am not able to have two ActionLinks on the same column. In this case I get the following error:
The best overloaded method match for 'System.Web.Helpers.WebGrid.Column(string, string, System.Func<dynamic,object>, string, bool)' has some invalid arguments
This is usefull not just for this but to create columns that contains more information then just a field.
I also tried Razor's <text> but no luck ... Maybe I used it wrong.
we are testing the Razor webgrid with Ajax. Works absolutely fine in IE8 when sorting in paging. However in IE7, any attempt to sort or page causes the grid to vanish from the page, leaving a blank space. The HTML that should be there, isn't!Has anyone come across this issue? How could we debug it? Page code below:
I'm working trying to realize a requirement where the pages should be 'configurable' at runtime (per client), stored in a database - a requirement that I have no say in Anyway, the current plan is to use the Razor view engine and 'load' the 'pages' dynamically. I have a basic sample working using a VirtualPathProvider and VirtualFile that serves up Raz'pages' on the fly.The question I have if there is a better approach when I have the Razor 'pages' stored in a dB (or any other repository)?
There seems to be some constraints and concerns when I check other postings. For example:'If a Web site is precompiled for deployment, content provided by a VirtualPathProvider instance is not compiled, and noVirtualPathProvider instances are used by the precompiled site.' (from http://msdn.microsoft.com/en-us/library/system.web.hosting.virtualpathprovider.aspx )
Is it possible to somehow output some content based upon some conditional check in Razor? If not, I hope this possibility will be added in the future. What I want to do is the following:
I know there is a serial problem with the gridview in webform:
if the data is too much as 100 thousands rows and more, and we 'select * from tableName' and bind data to the girdview, when the girdview pagination to last page , it will crash out! Then we should use ' DataBase pagination ' way. so, we use Linq to sql,Linq to Entity etc. to fetch data from database, using ' DataBase pagination ' , the WebGrid won't crash and it will take a short pageload time.
Is there any good way of Linq to sql / Linq to Entity for DataBase pagination ?
This seems like a basic question, but my searches haven't turned up an answer. Is there a way to use a DataTable as the source for the WebGrid helper? The constructor wants an IEnumerable<dynamic>, which a DataTable is most definitely not.
I've been practicing with WebMatrix and I've come across this problem. I'd like to use the format property of the WebGrid Column in vbhtml but I can't get it to work. I always get some kind of compilation error. Mostly the compiler says that an expression is needed. There must be a crucial difference between the way it's done in cshtml and the way it's done in vbhtml.
My webGrid is working perfectly fine. However, I would like the default sort order to be in the opposite direction. If it were SQL, I'd be adding a DESC somewhere. Here's my working line of code:
[Code]....
It correctly sorts on the UWDate column, but I would like it to sort the opposite sort order. Of course, once it is displayed, you can click on the title and it will resort at that time.
I have a Car class that I'm trying to display in an MVC 3 view using the WebGrid helper. Below are the Car and it's metadata class.
Car class:
[MetadataType(typeof(CarMetadata))] public partial class Car { // car implementation } Car metadata class: public class CarMetadata { [DisplayName("Car Name")] [StringLength(100, ErrorMessageResourceType = typeof(ValidationText), ErrorMessageResourceName="CarNameDescriptionLength")] [Required] public string CarName { get; set; } }
View contents:
@model List<Car> ... var grid = new WebGrid(Model, canPage: true, rowsPerPage: 10); grid.Pager(WebGridPagerModes.NextPrevious); @grid.GetHtml( htmlAttributes: new { id = "grid" }, columns: grid.Columns( grid.Column("CarName", ?????) ));
GOAL: I'd like to figure out how to use the DisplayName data annotation as the column header text in the WebGrid (?????). Does anyone know how this is accomplished?
I am using a Webgrid as part of an MVC 3 app. The weird thing is the first display of the page with the grid displays fine but when I click on a heading to sort, the grid is not displayed as part of the page when I am running under the web server provided by the VS 2010 installation. When I do a View Source of that page, all of the grid stuff (as table elements) is there to be displayed. It just does not show up in the browser. So, I wrote the html to a file and copied the javascript and css files to the same folder and then ran the file under IE and everything displays as it should.
Just in general, where can I find the code to take a look at and learn from them? Or at least look at the functions available to me as I do get the feeling that the insufficient documentation at the moment reveals all.
I understand the basics of setting up routes, I am trying to get a handle on how to organize more complex routes. Does the Route name do anything? I havn't seen a place it's actually used. If I have the route: controller/action/id/paramA/paramB/paramC. ParamA-C could be defining multiple parameters so First/Last/Zip or Phone/Zip/Birthday. Is it common practice to name the additional parameters with a generic name like paramA vs trying to differentiate a separate route for each?
Lastly, if you have multiple sites/functional areas in 1 site, lets say the asp.net site, each area MVC, Ajax, Forums ect were all different functional areas. Is it best to create a different group of routes such as hard coding the controller like:
MVC/action/id Ajax/action/id Forums/action/id
or is there a better way? What I am running into is 1 piece of the site overriding the other route because of the number/type of parameters.
I need to implement a wizardy, dynamic UI that uses complex validation of the style:
If A = 1, show controls B, C, D. B is required, C is not, and D is not required must be less than 30 if it is populated.
If A = 2, show controls B, D, E. B is not required, D is required but has no limits, and E is not required.
If B is not null, show controls B, D, E. B is not required, D is required but has no limits, and E is not required.
Historically, I have made my presentation layer as "dumb" as possible in that it is only responsible for capturing user input and binding it to the appropriate domain model. The domain model, in turn, contains the logic needed to validate it's state and that of any child objects, and then communicates any invalid state to the presentation layer via notifications. As such, this requirement for a highly "intelligent" UI represents a departure for me.
I think I have no choice but to construct 2 very similar class hierarchies:
one that will capture presentation business rules (i.e. what fields are visible) and control what renders in the View
one that will capture domain business rules (when field A = X, then field B should be not null and in the range of n to m) to disallow objects with an invalid state from being persisted
Sill I have far more questions than answers on my strategy moving forward. Is there a set of design patterns I can draw on to build such a dynamic UI? I do have the option of using ASP.NET MVC or WebForms, so whichever approach will produce cleaner, testable code is preferred.
I need to estimate (and probably build later on) complex filter in ASP.NET WebForms application. The filter has to be mostly based on ASP.NET AJAX or jQuery for high interactivity. The filter has to allow filtering data with complex logical conditions (and, or, braces) and several operators. A user has to be able to save the filter's query and use it (load it) later on (server logic). Moreover there is still discussion about in operator.
Application should provide some graphical filter builder. I want to have full control on set of operands (filtering fields) and operators. The component will be used for all filtering actions in application. My problem is only how to do the UI part - translation of builded "query structure" is not a problem.
Have you ever did something like that? Can you share some experience how to best and fastest build such component? Do I need to develop component or is there any existing one which has at least some of the functionality and can be extended to provide other functionality? Because I'm not very experienced with client side development, I don't know how complex task is developing such component from scratch.
Another possiblity is to define some meta query language and allow users to write the query to some query text box with support for building logical expressions. I have already checked available controls in DevExpress and Telerik toolkits:
DevExpress:
Pros: Really nice visualization, fast. We probably have DevExpress licences. Cons: Tightly coupled with DevExpress grid. Based on documentation no extensibility and no control over operands and operators. It uses operands provided as columns for grid - I need much more. Probably not possible to save and load filters.
Telerik:
Pros: Not coupled with grid, it looks like separate control. Cons: I didn't find documentation - I'm not sure about extensibility but the code looks like it uses some databind control as source of operands = problem. I don't like the visualization. Demo is really slow. We don't have Telerik licences.
How can I create a form that creates or updates a complex type that takes a form like:[Code]....
I would like to either create two forms one for tblstudent and one for tbldata and tblStudata or create one form for all three and give the illusion of multiple pages. I came across an old Railscast that talks about virtual attributes and a helper called fields_for which helps you switch between model contexts in a single form. Is there a way of achieving this kind of functionality with C# MVC 2 or 3?
If this sort of thing is not possible how else might I be able to handle create/update scenarios without defining two actions amd voews for each table entity I need to work with or god forbid separate controllers?
I really don't know if this Post fit in this Forum section. But here I go. I need some sugestion to develop an ASP.NET code that generate complex IDs / Keys automatically. Let me be more understandable:
I want to create uniquelly IDs with more complex composition (kind of 18958351512783997769711... or crlu0xakecjzlgmjsgnedr55) or something link that (doesn't matter the lenght... those are only examples).
So, I can use that to set COOKIE ID's... PRODUCTS CODE ID's.... CUSTOMER's CART ID's... etc... But it need to generate uniquelly numbers. I don't know if you got my point I hope you did.
I'm currently implementing a project using asp.net, c# and the MVP (Model-View-Presenter) pattern. The main purpose of this solution is to deliver a graph to the consumer, to be used by a variety of systems. It is basically a custom graph server.
The view page in this particular case has an MSChart control on it, which has to be dynamically populated and configured based on parameters in the QueryString. This can be as diverse as totally different types of data sets, display modes and so on, using a lot of the properties of the chart control.
Many of these properties are again of types which are particular to the chart control and would require the same dependencies as the chart control itself if they are to be set by the presenter.
I'm trying to figure out the best way to expose the properties to the presenter so it can work its magic.
Should I:
Just expose the whole chart object and live with a system.web type dependency in the presenter project? Make accessor and translation properties for all of the chart control properties so that I don't have the dependency, but add lots of complexity? Other, that I haven't thought of?
To me it seems that it would be against the MVP pattern to bubble a display control up into the presenter, but it seems that trying to map all the properties to DTOs or similar would be a lot of work that would add a lot of complexity, and while the solution would be somewhat more loosely coupled, I'm not sure the gain would be worth it in this case. How would you implement something like this, given MVP?
