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  • using regular expression / Remove special characters with linq to sql

    - by Prasad
    How can i use regular expressions with linq to sql in the asp.net mvc(C#) application? The columns in my MSSQL table (Products) has some special characters like (, - % ',.....). While searching for a product i need to search without that special chareters. For ex.: I have a product say (ABC-Camp's / One), when i search for "abccamp", it should pull the product. I am trying the query like: from p in _context.pu_Products where p.User_Id == userId && p.Is_Deleted == false && p.Product_Name.ToLower().Contains(text.ToLower()) select new Product { ProductId = p.Product_Id, ProductName = p.Product_Name.Replace("’", "").Replace("\"", ""), RetailPrice = p.Retail_Price ?? 0M, LotSize = p.Lot_Size > 0 ? p.Lot_Size ?? 1 : 1, QuantityInHand = p.Quantity_In_Hand ?? 0 } But i need to search without any special characters...

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  • Is possible to set generic type by another class?

    - by Soul_Master
    I use ASP.NET MVC for serving web application and I want to create something like the following code. <% using(HTML.Form(Model)) { %> <% HTML.CreateTextBox('txt1', x => x.Property1); <% } From the above code, Form extension method will receive object that represent type of current Model object in current View page. Next, CreateTextBox method will receive type from Form method and I can bind textbox to some property of this model. Update 1 The following code is code of CreateTextBox method that will create instance of TextBox class. public static CreateTextBox(string value, Expression<Func<object>> bindedProperty) { // T should be receive from HTML.Form method or class return new TextBox<T>(value); } Is it possible to creating some code that doing something like the above code? Thanks,

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  • Is it possible to use Data Annotations to validate parameters passed to an Action method of a Contro

    - by dannie.f
    I am using Data Annotations to validate my Model in ASP.NET MVC. This works well for action methods that has complex parameters e.g, public class Params { [Required] string Param1 {get; set;} [StringLength(50)] string Param2 {get; set;} } ActionResult MyAction(Params params) { If(ModeState.IsValid) { // Do Something } } What if I want to pass a single string to an Action Method (like below). Is there a way to use Data Annotations or will I have to wrap the string into a class? ActionResult MyAction(string param1, string param2) { If(ModeState.IsValid) { // Do Something } }

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  • How can I convince IE to simply display application/json rather than offer to download it?

    - by Cheeso
    While debugging jQuery apps that use AJAX, I often have the need to see the json that is being returned by the service to the browser. So I'll drop the URL for the JSON data into the address bar. This is nice with ASPNET because in the event of a coding error, I Can see the ASPNET diagostic in the browser: But when the server-side code works correctly and actually returns JSON, IE prompts me to download it, so I can't see the response. Can I get IE to NOT do that, in other words, to just display it as if it were plain text? I know I could do this if I set the Content-Type header to be text/plain. But this is specifically an the context of an ASPNET MVC app, which sets the response automagically when I use JsonResult on one of my action methods. Also I kinda want to keep the appropriate content-type, and not change it just to support debugging efforts.

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  • Field annotated multiple times by the same attribute

    - by Jaroslaw Waliszko
    For my ASP.NET MVC application I've created custom validation attribute, and indicated that more than one instance of it can be specified for a single field or property: [AttributeUsage(AttributeTargets.Field | AttributeTargets.Property, AllowMultiple = true)] public sealed class SomeAttribute: ValidationAttribute I've created validator for such an attribute: public class SomeValidator : DataAnnotationsModelValidator<SomeAttribute> and wire up this in the Application_Start of Global.asax DataAnnotationsModelValidatorProvider.RegisterAdapter( typeof (SomeAttribute), typeof (SomeValidator)); Finally, if I use my attribute in the desired way: [SomeAttribute(...)] //first [SomeAttribute(...)] //second public string SomeField { get; set; } when validation is executed by the framework, only first attribute instance is invoked. Second one seems to be dead. I've noticed that during each request only single validator instance is created (for the first annotation). How to solve this problem and fire all attributes?

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  • LINQ to SQL DB Connections not closing

    - by Joe
    I am using LINQ to SQL in an asp.net mvc application. I am calling stored procedures via ajax calls. The active connections for 2-3 users goes to 100 active connections. and then server timeouts happen. I then used IOC -autofac to resuse the same repository that has a datacontext. now tho i get an active connection on the SQL server per loggedin user plus one. I have never seen this before. Why wouldnt Lin2sql not drop a connection when not in use? would calling a stored procedure in an ajax call in a loggedin session creat an a new active connection? Could a Stored Procedure with loops and or a waitfor hold open a connection??

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  • Understanding configuration for parallel calling in web app (IIS + MS SQL)

    - by mmcteam.com.ua
    We have an ASP.NET MVC application + IIS 7.5 + SQL Server 2008 R2. We have to load a lot of aggregate counters on the each page. We decided to use ajax and call with javascript for each counter or groups of counters and return them as JSON result. We solve the problem that user doesn't wait for page loading, page loads fast. User waits for counters loading while seeing other page content. But we thought that if we make calls from javascript - our queries will be make async, but we notice, that it is not. All our javascipt calls runs immediately, but action that they invoke are in queue. If we use Async Controller ability - all counters calculating simultaneously, but user has to wait for the longest counter calculating before page loads. The question: We want to understand what is happens if we use ajax and call two or more actions simultaneously. And how can we configuring this. (also in each action we make some queries to sql server)

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  • Using "Go To Controller" and "Go To View" in Visual Studio 2008 when controllers are in different as

    - by ElvisLives
    The title is basically the question. We decided to move our controller classes to a separate library and reference it in our asp.net mvc 2 application. It works just fine when running the application, meaning the controllers are being referenced while the application is running. But when doing development (in Visual Studio 2008) and I am in a View and try to use the context menu "Go To Controller" it can't find our controllers in the new assembly. Same with when I am inside a controller, I don't have the Context menu to "Add View" or "Go To View" anymore. Does anyone one know how to remedy this? I searched like crazy but haven't found any solutions or even half solutions. Thanks!

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  • Which is the better way to avoid magic string keys? Using string const keys in a class or using enumeration?

    - by user596314
    My idea is to avoid magic string keys in my Asp.Net MVC application. To do so, I want to create string constant keys to be shared in the application. For example, I can write TempData[MyClass.Message] or TempData[MyEnum.Message.ToString()] instead of TempData["Message"]. public class MyClass { public const string Message = "Message"; } and public enum MyEnum { Message, Others } My questions are: Which is the better way to avoid magic string keys? Using string const keys in a class or using enumeration together with ToString()?

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  • Can I use breakpoints (as while debugging) while 'unit testing' ?

    - by Richard77
    Hello, I'm walking through the FrontStore series tutorial on TDD in MVC (Part 3 by Rob Conery/ASP.NET). The test I'm concerned with is the CatalogRepository_Each_Category_Contains_5_Products(). Until I get to that test, everything was working fine. Now, I've gone through every line that makes this test (including the test itself, the TestCatalogRepository, ...). I've also compared my code to that of Rob, but the test keeps failing. I also checked the source code from CodePlex, that test was not there. Now, I wonder if I can put a break point somewhere to check the local values as the test is being executed? If not, something similar? Thanks for helping.

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  • Point IIS at debug folder

    - by mtmurdock
    I am working on an asp.net mvc web service and an Android app that need to be able to communicate with one another. However, when running a web service/web site in Visual Studio it can only be accessed by that machine. So what I want to do is point IIS at my project's bin/debug folder, thus exposing my dev environment to my local network. I know this is possible because my work machine is set up this way, I just don't know how it is done. How do I configure IIS to load a web app from the debug directory of my Visual Studio project?

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  • form data posted using linq-to-sql not showing until I refresh the page

    - by PeteShack
    I have an asp.net mvc app with a form. When you submit the form, it adds records to the sql database with linq-to-sql. After adding the records, the controller displays the form again, and should show those new values on the form. But, when it displays the form, the values are blank, until you refresh the page. While tracing through the code, I can see the records being added to the database when they are submitted, but the view doesnt display them, unless I refresh. The view is not the problem, it just displays the view model, which is missing the new records immediately after the post. I know this is kind of vague, but wasnt sure what parts of code to include here. Could this have something to do with data context life cycle? Basically, there is a data context created when the form is posted, then a different data context is created in the method that displays the form. Any suggestions on what might be causing this?

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  • Authenticating model - best practices

    - by zerkms
    I come into ASP.NET from php so the reason why i ask my question is because it's totally different nature of how application works and handles requests. well, i have an exists table with user creditians, such as: id, login, password (sha hashed), email, phone, room i have built custom membership provider so it can handle my own database authentication schema. and now i'm confused, because User.Identity.Name contains only user's login, but not the complete object (i'm using linq2sql to communicate with database and i need in it's User object to work). at php applications i just store user object at some static method at Auth class (or some another), but here at ASP.NET MVC i cannot do this, because static member is shared across all requests and permanent, and not lives within only current request (as it was at php). so my question is: how and where should i retrieve and store linq2sql user object to work with it within current and only current request? (after request processed successfully i expect it will be disposed from memory and on next request will be created again). or i'm following totally wrong way?

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  • @Html.Label won't allow string concatination

    - by MrGrigg
    I'm building dynamic forms based on a partial view. My view inherits a model with a single property: CatalogName { get; set; }. I have tried this: @Html.Label(Model.CatalogName + "-ProductNumber", "Product Number") @Html.TextBox(Model.CatalogName + "-ProductNumber") The HTML renders like this though: <label for>Product Number</label> <input name="CatatalogName-ProductNumber" type="text" /> If I write my code like this: @Html.Label("ProductNumber-" + Model.CatalogName", "Product Number") It will render the way I expect <label for="ProductNumber-CatalogName">Product Number</label> Is this a bug with MVC? Are there any answers to why my concatenation won't work the way I want it in the label, but works fine with the TextBox?

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  • LINQ to SQL - Get only substring from a field

    - by domanokz
    I'm studying ASP.NET MVC and I use LINQ to SQL for model. I have a table named "Note" with the fields "Title" and "Content". The "Content" field can contain thousand characters. What I want to do is to display the LIST of notes in a page. I use table with two columns, for "Title" and SUBSTRING of the "Content" (50 characters). My problem is, I don't know how to edit the model so that it will display only the substring of the "Content". Thanks in advance!

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  • Generate form based on selection

    - by Jay
    I'm looking to build a web application that allows a person to select a plan and fill out an application for that plan. There are multiple plans and each plan generates a different application. Some of the questions are identical such as fields related to personal information. I'm thinking of using ASP.NET MVC to build this web application. When generating the multi page application would it be best to Create partial views (sections of applications) and combine them when generating the form. OR Build some type of dynamic form generator

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  • JQuery validation based on class?

    - by Mark Kadlec
    I have a form that will have dynamically created elements, one of those will be of date type. There can also be many fields of this type on my form, all which must be validated. I am using a strongly typed view in Asp MVC, so the name will change based on various factors. What I would like to do is validate based on a class name instead, since that will be constant for that type of field. Ie: <%= Html.TextBox("questionAnswers[" + index + "].AnswerValue", qa.AnswerValue, new { @class = "DateTypeClass" })%> So then I would need JQuery validation based on the classname DateTypeClass versus the Name. Any ideas?

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  • javascript "window.history.forward(1);" not working.

    - by Ray L.
    Hi, I'm trying to prevent the back button from working on one of my asp.net mvc pages. I've read a couple of places that if i put "window.history.forward(1);" in my page it will prevent the back button from working on a given page. This is what I did in my page: <script type="text/javascript"> $(document).ready(function () { window.history.forward(1); }); </script> It doesn't seem to be working. Am I using this incorrectly or is this approach wrong? thanks.

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  • Error when customize ValidationMessageFor

    - by user1542080
    i want to customize ValidationMessageFor which display error. when i run application, a get an error : No overload for method 'ValidationMessageFor' takes 1 arguments I'm understand my error, but i don't know how to fix it ? I need some suggest . Thanks you for reading! My code : using System.Linq.Expressions; using System.Web; using System.Web.Mvc; namespace OurCompanyUI.app_code { public static class MyHtml { public static MvcHtmlString ValidationMessageFor<TModel, TProperty>( this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, string validationMessage, IDictionary<string, Object> htmlAttributes ) { string modelName = ExpressionHelper.GetExpressionText(expression); TagBuilder p = new TagBuilder("p"); p.InnerHtml = htmlHelper.ValidationMessageFor(htmlHelper,expression).ToString(); // p.InnerHtml = htmlHelper.ValidationMessageFor().ToString(); return MvcHtmlString.Create(p.ToString(TagRenderMode.Normal)); } } }

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  • PHP Framework Benefits / Downfalls

    - by Lizard
    I have been a PHP developer for about 10 years now and until about a month ago I have never used a framework. The framework I am now using due to an existing codebase is cakePHP 1.2 I can see certain benefits of the frameworks with the basic helpers like default layouts. I can definitely see the benefits of MVC keeping the logic separate etc. But the query building just seems to be bloated. Is this expected? Am I likely to be able to build better queries than the framework could build? I just feel I could get my apps running better without a framework. What are your thoughts?

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  • Time for creation of database on site

    - by slo2ols
    Hi. When and where would you create database to develop web site using ASP.NET MVC 2 and Entity Framework 4 (CreateDatabase method). I think about first run of web site and redirect on welcome page, when controller creates database from model. But I doubt about details: 1. Where? In HttpModule, but request of any image or css will check that database exist. In custom RouteHandler, but then anybody need to know that need to use this handler when to add route. In BaseController, but then code will look like SomeController(..., IDatabase database) : base(database). 2. When? Better create database on first run by any url or may be on deployment of site (additional tool which create ObjectContext and invoke CreateDatabase)? Thanks.

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  • How many SQL queries per HTTP request is optimal?

    - by Chris Kooken
    I know the answer to this question for the most part is "It Depends", however I wanted to see if anyone had some pointers. We execute queries each request in ASP.NET MVC. Each request we need to get user rights information, and Various data for the Views that we are displaying. How many is too much, I know I should be conscious to the number of queries i am executing. I would assume if they are small queries and optimized out, half-a-dozen should be okay? Am I right? What do you think?

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  • how to create 2 controllers with same actionresult 2 views but one implementation

    - by amalatsliit
    I got a controller in my mvc application like below. public class BaseController: Controller { protected void LogInfo() { logger.InfoFormat("[SessionID: {0}, RemoteIP: {1}]", Session.SessionID, Request.UserHostAddress); } } public class FirstController : BaseController { public ActionResult Index(string name) { LogInfo(); getQueryString(); if(IsValidRec()) { if(Errors())) { return View("Error"); } var viewname = getViewName(name); return view(viewname); } else return view("NotFound"); } } I need to create another controller(SecondController ) with same ActionResult method that FirstController has but without any implementation. Because I dont wont to repeat same code in 2 ActionResult methods. what is the best way to do that. I tried in following way but I m getting error when I initialize my protected method 'LogInfo()' public class SecondController : BaseController { public ActionResult Index(string name) { var firstcontroller = new FirstController(); return firstcontroller.Index(name); } }

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  • How modify Details view

    - by ognjenb
    How modify strongly typed Details view created in asp.net mvc? View need to present data Similarly to the table. Is this possible in CSS? Part of my view is: <fieldset > <legend>Fields</legend> <p> ArticleNumber: <%= Html.Encode(Model.ArticleNumber) %> </p> <p> CalCertificateFile: <%= Html.Encode(Model.CalCertificateFile) %> </p> </fieldset>

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  • What is the difference between "render a view" and send the response using the Response's method "sendResponse()"?

    - by Green
    I've asked a question about what is "rendering a view". Got some answers: Rendering a view means showing up a View eg html part to user or browser. and So by rendering a view, the MVC framework has handled the data in the controller and done the backend work in the model, and then sends that data to the View to be output to the user. and render just means to emit. To print. To echo. To write to some source (probably stdout). but don't understand then the difference between rendering a view and using the Response class to send the output to the user using its sendResponse() method. If render a view means to echo the output to the user then why sendResponse() exists and vise versa? sendResponse() exactly sends headers and after headers outputs the body. They solve the same tasks but differently? What is the difference?

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