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• ASP.NET MVC Data Annotations for validation, at least one required field?

  - by Boob

  If I have a search object with a list of fields, can I, using the System.ComponentModel.DataAnnotations namespace, set it up to validate that at least one of the fields in the search is not null or empty? i.e All the fields are optional but at least one should always be entered.

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• How can i use the Pluggable ASP.NET Components on my project.

  - by shamim

  http://msdn.microsoft.com/en-us/library/aa479332.aspx form this site i download the MSDNElmah.msi.After install this, i get a solution Contain .aspx and web.config file and one dll.This site have some information about this plugin,but it's seems to difficult to me.I can not use it on my Project.I want to use this plugin on my project.Please help me…

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• How to render a DateTime in a specific format in ASP.NET MVC 3?

  - by Slauma

  If I have in my model class a property of type DateTime how can I render it in a specific format - for example in the format which ToLongDateString() returns? I have tried this... @Html.DisplayFor(modelItem => item.MyDateTime.ToLongDateString()) ...which throws an exception because the expression must point to a property or field. And…

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• ASP.Net Error - Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.

  - by xtrabits

  I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'. This is the code I'm using Dim str As String = String.Empty If (Session("Brief") IsNot Nothing) Then Dim dt As DataTable = Session("Brief") If (dt.Rows.Count > 0) Then For Each dr As DataRow In dt.Rows …

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• ASP.NET Repeater datasource bound to a function. Would it call the function twice?

  - by Frenchie

  In the code behind I have a function that returns a List(Of SomeClass): rptRepeater.DataSource = SomeFunction(SomeVariable) rptRepeater.DataBind() In the html I have a basic repeater layout and am using the below code to get the Properties of each object returned. <%#Databinder.Eval(Container.DataItem, "Parameter1")% My question is,…

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• Is POSTing a Dictionary to an .NET MVC action possible?

  - by Brenton Alker

  I have a form which contains a series of fields like: <input type="text" name="User[123]" value="Alice" /> <input type="text" name="User[456]" value="Bob" /> ... Where the index of the User array (123 and 456) are ID's associated with the value. I'm trying to update these values in the controller. My thinking is that a…

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• How can I read the properties of an object that I assign to the Session in ASP.NET MVC?

  - by quakkels

  Hey all, I'm trying my hand at creating a session which stores member information which the application can use to reveal certain navigation and allow access to certain pages and member role specific functionality. I've been able to assign my MemberLoggedIn object to the session in this way: //code excerpt start... …

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• How can we set authorization for a whole area in ASP.NET MVC?

  - by CodingTales

  I've an Admin area and I want only Admins to enter the area. I considered adding the Authorized attribute to every controller in the Admin area. Isn't there an elegant solution or is this feature not there in the framework itself? EDIT: I'm sorry, I should to have mentioned this before. I'm using a custom AuthorizedAttribute…

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• Choosing VS2008 .Net 3.5 and .Net 3.5SP1

  - by SysAdmin

  here is the problem. I have one PC using VS2008 (SP1 ) and another PC using VS2008(normal). I want my .Net projects to be editable in both these PC's. So naturally my projects use .Net 3.5 by default and not .Net 3.5 SP1. So, Is there a way I can fix my VS2008 (SP1) version to stick to .Net 3.5 and not .Net 3.5 SP1. In…

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• VB .Net LINQ query to determine whether more than one element has the same value for a property?

  - by Alex Hope O'Connor

  I am trying to write a LINQ query which will return true if there are multiple objects which have a property with the same value. Here is what I have come up with so far: Formatters.Where(Function(f As DataModel.Formatter) _ Formatters.Select(Function(f2 As…

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• how to show the number of characters left in a multiline textbox in asp.net ?

  - by HotTester

  I have a multiline textbox which can contain only 500 characters. Now i want to show the user the number of characters left as they are typing into the textbox as is the case when we use twitter. Kindly help

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• Is ASP.NET membership, role management and Profile usable in a C# Class Library?

  - by afsharm

  I know it's possible to use this information in a winform, wpf or console application. But I rather to determine which user with what roles are running a sepecific method, so I could decide upon them and run different codes. In addition in a desktop app. how a user can login? Is there any special winform or…

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• How to iterate through ASP .NET textboxes using javascript and calculate a value ?

  - by Nikunj Nandaniya

  i have a multiple textboxes in repeater and i will enter value in those textboxes at runtime. and i want sum of all value entered in those textboxes in one label.i want to do this thing using java script. so can u please help me.

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• How Can I Convert the Value - listViewRecs.SelectedItems[0].SubItems[0] - to Integer? - C#.NET

  - by peace

  int val = lstvRecordsCus.SelectedItems[0].SubItems[0]; The returned value is an int in a string datatype. I need the right hand side to return the value in int instead of string. I tried Convert.ToInt32, it didn't work. Any idea? All the values that comes from SelectedItems[0].SubItems[0] is of type int.

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• what's the right way to bind sqldatasource to asp:label in asp.net 4.0?

  - by cskilbeck

  Is it possible using Eval? If so, can someone post a short fragment to illustrate? My SqlDataSource returns 1 record with 3 fields, I'd like to Format these into a string. eg: Record Field 'Name' = 'Jack' Field 'Amount' = 100 Field 'Date' = 12.02.2010 asp:Label text should end up being: Welcome…

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• How Does One Differentiate Between Routes POSTed To In Asp.Net MVC?

  - by Laz

  I have two actions, one that accepts a ViewModel and one that accepts two parameters a string and an int, when I try to post to the action, it gives me an error telling me that the current request is ambiguous between the two actions. Is it possible to indicate to the routing system which action is the…

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• Is there a Better Way to Retreive Raw XML from a URL than WebClient or HttpWebRequest? [.NET]

  - by DaMartyr

  I am working on a Geocoding app where I put the address in the URL and retreive the XML. I need the complete XML response for this project. Is there any other class for downloading the XML from a website that may be faster than using WebClient or HttpWebRequest? Can the XMLReader be used to get the…

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• Is this a bug? Or is it a setting in ASP.NET 4 (or MVC 2)?

  - by John Gietzen

  I just recently started trying out T4MVC and I like the idea of eliminating magic strings. However, when trying to use it on my master page for my stylesheets, I get this: <link href="<%: Links.Content.site_css %>" rel="stylesheet" type="text/css" /> rending like this: <link…

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• Using jQuery to POST Form Data to an ASP.NET ASMX AJAX Web Service

  - by Rick Strahl

  The other day I got a question about how to call an ASP.NET ASMX Web Service or PageMethods with the POST data from a Web Form (or any HTML form for that matter). The idea is that you should be able to call an endpoint URL, send it regular urlencoded POST data and then use Request.Form[] to…

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• Introducing Data Annotations Extensions

  - by srkirkland

  Validation of user input is integral to building a modern web application, and ASP.NET MVC offers us a way to enforce business rules on both the client and server using Model Validation.  The recent release of ASP.NET MVC 3 has improved these offerings on the client side by introducing…

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• Using Rich Text Editor (WYSIWYG) in ASP.NET MVC

  - by imran_ku07

     Introduction:          In ASP.NET MVC forum I found some question regarding a sample HTML Rich Text Box Editor(also known as wysiwyg).So i decided to create a sample ASP.NET MVC web application which will use a Rich Text Box Editor.…

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• Web Deploy no ASP.NET 4 no VS 2010

  - by renatohaddad

  Pessoal, nunca foi tão fácil fazer deploy de aplicações ASP.NET 4 no VS 2010, é impressionante a facilidade. Para o Road Show eu criei uma conta no provedor orcsweb que já hospeda .NET 4, fiz uma simples aplicação que inclusive lê um banco de dados e a url é…

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• RUN 2012 Buenos Aires - Desarrollando para dispositivos móviles con HTML5 y ASP.NET

  - by MarianoS

  El próximo Viernes 23 de Marzo a las 8:30 hs en la Universidad Católica Argentina se realizará una nueva edición del Run en Buenos Aires, el evento Microsoft más importante del año. Particularmente, voy a estar junto con Rodolfo Finochietti e Ignacio Lopez…

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• Creating and Using a jQuery Plug-in in ASP.NET Web Forms

  - by bipinjoshi

  Developers often resort to code reuse techniques in their projects. As far as ASP.NET framework server side programming is concerned classes, class libraries, components, custom server controls and user controls are popular code reuse techniques. Modern…

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• A plan to study ASP.NET + C# + SQL + SQL Server [closed]

  - by ali saleem

  Possible Duplicates: Should I be a professional in C# programming in order to build good web applications using ASP.NET? Is there a combination of language and database that is both great to use and free/cheap? C# for web development? or C# as general…

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