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  • DataBinding a DropDownList in ASP.NET MVC 2

    - by Daniel Coffman
    I'm extremely frustrated trying to switch to MVC after a couple years of webforms development. Here's my extremely simple problem that I can't manage to solve: I have a list of States in a table called StateProvince. I have a DropDownList. I want the DropDownList to display all of the States in the StateProvince table and post the selected state back on HTTP PUT. This is what I'm doing: <%: Html.DropDownListFor(model = model.StateProvinceId, new SelectList(Model.StateProvinces, "StateProvinceId", "Name") )% I'm getting an Object reference not set to an instance of an object. Why? How can I make this work? Keep it simple, I know nothing about MVC.

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  • ASP.net MVC - Check status request

    - by vdhant
    Hi guys Just wondering if its possible to get the status of a request from another request? To help provide some context, I want to use ajax to upload some files to the server. When the upload is started I want triggered another ajax request that checks to see how much of the file has been uploaded (or in other words how big was the other request and how far through receiving the request is the server). I was thinking that I could use a guid or something similar to ensure that I am checking the status of the right request. But how do I check the status of another request??? Cheers Anthony

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  • ASP.NET 4.0 Routing and Subfolders

    - by IrishChieftain
    I have a folder structure like this: Site/About/About.aspx I have a link in a user control like this: <a href="~/About/About" id="aboutLink" title="About" runat="server">About</a> And in my RegisterRoutes() method, I have this: routes.MapPageRoute("", "About/About/", "~/About/About.aspx"); It works but produces the following URL: Site/About/About What I would like is this: Site/About Is this possible with out-of-the-box 4.0 routing?

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  • Multiple Default Routes in ASP.NET MVC to different Default Actions

    - by Alex
    I have multiple controllers with different actions (no "Index" actions). The actions I consider "default" actions, are named differently. I want to create default routes for their names and have the first available action (from my list of default actions) executed if only the controller name is provided in the route. So, for example, I have the following actions which I want to consider default and want checked for their existence in a controller in this order: List() Draw() ViewSingle() The routing should somehow search for /{controller} and then take the first available action from the list above as default action, e.g.: /ControllerA -> ControllerA.List() /ControllerB -> ControllerB.Draw() /ControllerC -> ControllerC.ViewSingle() /ControllerD -> ControllerD.Draw() /ControllerE -> ControllerE.List() Is this possible? I tried creating additional Default actions like this but couldn't get it to work: routes.MapRoute("Default1", "{controller}/{action}", new { controller = UrlParameter.Optional, action = "List" } routes.MapRoute("Default2", "{controller}/{action}", new { controller = UrlParameter.Optional, action = "Draw" } routes.MapRoute("Default3", "{controller}/{action}", new { controller = UrlParameter.Optional, action = "ViewSingle" } Help?

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  • Design Time Attribute For CSS Class in ASP.net Custom Server Control

    - by Jon P
    Hopefully some Custom Control Designers/Builders can help I'm attempting to build my first custom control that is essential a client detail collection form. There are to be a series of elements to this form that require various styles applied to them. Ideally I'd like the VS 2005/2008 properties interface to be able to apply the CSSClass as it does at the control level, i.e. with a dropdown list of available CSS Clases. Take for example the Class to be applied to the legend tag /// <summary>Css Class for Legend</summary> [Category("Appearance")] [Browsable(true)] [DefaultValue("")] //I am at a loss as to what goes in [Editor] [Editor(System.Web.UI.CssStyleCollection), typeof(System.Drawing.Design.UITypeEditor))] public string LegendCSSClass { get { return _LegendCSSClass; } set { _LegendCSSClass = value; } } I have tried a couple of options, as you can see from above, without much luck. Hopefully there is something simple I am missing. I'd also be happy for references pertaining to the [Editor] attribute

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  • ASP.NET: Moving ViewState to bottom of page

    - by Seb Nilsson
    What are the latest and greatest ways to move ViewState to bottom of the page Can this be done in a IHttpHandler that can be specified in the web.config to intercept requests to "*.aspx"? <httpHandlers> <add verb="*" path="*.aspx" type="MyApp.OptimizedPageHandler" /> <httpHandlers> Other options is that this could be done in a IHttpModule, but that is not as performant, as it will intercept all requests. Also it could be done in an a class deriving from the Page or MasterPage-class, but this is not as modular. Are there any performance penalties to this?

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  • using eval in server side code on asp.net page

    - by Sumit Sharma
    <asp:Repeater ID="rptrParent" runat="server"> <ItemTemplate> <li> <a href="<% =ResolveUrl("~/cPanel/UserView.aspx?User=")%><%# Eval("StudentUserName") %>"> <span> <% ProfileCommon pc = new ProfileCommon(); pc.GetProfile(Eval("StudentUserName").ToString()); Response.Write(pc.FirstName + "" + pc.LastName); %> <%# Eval("StudentUserName") %> </span> </a> </li> </ItemTemplate> The following error Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. is coming in this part <% ProfileCommon pc = new ProfileCommon(); pc.GetProfile(Eval("StudentUserName").ToString()); Response.Write(pc.FirstName + "" + pc.LastName); %>

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  • Hidden Features of ASP.NET

    - by Vaibhav
    There are always features that would be useful in fringe scenarios, but for that very reason most people don't know them. I am asking for features that are not typically taught by the text books. What are the ones that you know?

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  • asp.net mvc - reusing pages/controllers in workflow

    - by fregas
    I have 2 workflows: 1) the user signs up for the first time. They see 3 different screens, their basic user information, their credit card, and some additional profile information. They complete these 3 steps in a wizard like fashion, where each time they hit "submit" they leave the current screen and move on to the next. 2) the user already is signed up. He has links in the navigation to these 3 seperate pages. He can update them in any order. When he hits save, he doesn't leave the page he's on, it just shows something at the top that says "Credit Card Info saved..." or whatever. Possibly using ajax or maybe a full page refresh. I would like to reuse the code not only the view but also in the controller for these 3 screens between the two workflows, but without a ton of if...then logic to determine where to go next depending on whether its a first signup in the wizard or updating individual parts of a profile. Any ideas?

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  • ASP.NET MVC Beginner's question

    - by Amutha
    Just I am learning MVC,(ofcourse i get enough information from MS Website).I want to quickly clarify some details. 1) What is the use of PartialView in MVC,Is it similar to partial update of Ajax? I am does the partialView modify the HTML DOM structure? 2)Can i use Response.Redirect() in MVC?

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  • ASP.NET MVC Alter Markup before Output

    - by youwhut
    Hi, Excuse my limited knoweldge here. In the past I have used Steve Sanderson's method to HTML encode by default at runtime: http://blog.stevensanderson.com/2007/12/19/aspnet-mvc-prevent-xss-with-automatic-html-encoding/ I have a need to alter img src and a href attributes before they are spat out in the user's browser. There is a solution using JavaScript but this is not ideal for several reasons. Intercepting the compiler is not an option because of unnecessarily using Response.Write for trivial HTML. Is there something I can do with HTTP modules or the view engine? Any thoughts? Cheers.

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  • removing diffgram from .net web service returning dataset

    - by FrenchiInLa
    per my client request I have been requested to return a dataset. basically it's an arraylist that i convert to dataset as follow DataSet ds = new DataSet(); DataTable tbl = new DataTable("Table"); DataRow drow; tbl.Columns.Add("ID", Type.GetType("System.String")); tbl.Columns.Add("Name", Type.GetType("System.String")); foreach (NameIDPair item in AL) { drow = tbl.NewRow(); drow["ID"] = item.ID; drow["Name"] = item.Name; tbl.Rows.Add(drow); } ds.Tables.Add(tbl); the problem with my client is this web service add a diffgram like diffgr:hasChanges="iserted" tag to each row, and they're pretending is not consistent with other web services used by them. How can I remove this tag in the XML returned? Any help would be greatly appreciated. Thanks

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  • ASP.NET MVC Routes

    - by MVCDummy09
    Can I see one example that would make this piece of code compile? public IEnumerable<RouteBase> Routes { get { return new List<Route>() { new Route(...) } } } What would you do if RouteCollection.MapRoute() didn't exist? I'm trying to put my Controller in charge of mapping routes, not Global.asax.cs. public IEnumerable<RouteBase> Routes is a member of my Controller. If the Controller is responsible for a Route, it's a bad idea to decouple the Route by using routes.MapRoute() in Global.asax.cs.

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  • ASP.Net URL rewriting and redirecting....

    - by DDiVita
    I am trying to wrap my head around a URL rewrtie / redirect project I need to work on. We currently have this url: www.domain.com/Details/Detail.aspx?param1=8&param2=12345 Here is what the rewritten URL will look like: www.domain.com/Param1/8/Param2/12345 I am using the ISAPI_Rewrite filter to allow for the "nice" url and make the page think it is still using the old url. That works fine. Now, I need to redirect users, if they use the old URL, to the new URL. I fgiure I would need to use a combination of the filter and an HTTPModule / Handler to perfomr the redirect. Any ideas?

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  • Bind SQLiteDataReader to GridView in ASP.NET

    - by Charles Gargent
    Hi, this is all rather new to me, but I have searched for a good while and cant find any idea why I cant get this to work, dr looks like it is populated but I get this nullreferenceexeception when I try to bind to the gridview Thanks code SQLiteConnection cnn = new SQLiteConnection(@"Data Source=c:\log.db"); cnn.Open(); SQLiteCommand cmd = new SQLiteCommand(@"SELECT * FROM evtlog", cnn); SQLiteDataReader dr = cmd.ExecuteReader(); GridView1.DataSource = dr; GridView1.DataBind(); dr.Close(); cnn.Close(); Codebehind <asp:ContentPlaceHolder ID="MainContent" runat="server"> <asp:GridView ID="GridView1" runat="server"> </asp:GridView> </asp:ContentPlaceHolder> error Object reference not set to an instance of an object. at WPKG_Report.SiteMaster.Button1_Click(Object sender, EventArgs e) in C:\Projects\Report\Site.Master.cs:line 32 at System.Web.UI.WebControls.Button.OnClick(EventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

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  • Ajax inside Button Click (Getting parameter / Asp.NET MVC)

    - by Ph.E
    Greetings gentlemen I'm trying to implement the following code in my View, and unfortunately I'm not getting. The event is called, but I can not receive the parameter. Does anyone have any ideas? Method: <p><%= Html.AjaxButtonLink("btnExcluir","btnExcluir","Excluir", null, Url.Action("Excluir", new { IdMenu = Model.MenuInfo.Id_menu })) %></p> HTML: <p><input id="btnExcluir" name="btnExcluir" onClick="Sys.Mvc.AsyncHyperlink.handleClick(&quot;/Gerencial/MENUACAO/Excluir/60?IdMenu=60&quot;, new Sys.UI.DomEvent(event), { insertionMode: Sys.Mvc.InsertionMode.replace, httpMethod: 'Post' });" type="button" value="Excluir"></input></p> Controller: [ AcceptVerbs(HttpVerbs.Post) ] public ActionResult Excluir(string IdMenu) string IdMenu always come null! ================ Differences ActionLink: <p><a href="/Gerencial/MenuAcao/Excluir/60?IdMenu=60" onclick="Sys.Mvc.AsyncHyperlink.handleClick(this, new Sys.UI.DomEvent(event), { insertionMode: Sys.Mvc.InsertionMode.replace, httpMethod: 'Post' });">Excluir</a></p> My Button: <p><input id="btnExcluir" name="btnExcluir" onClick="Sys.Mvc.AsyncHyperlink.handleClick(&quot;/Gerencial/MENUACAO/Excluir/60?IdMenu=60&quot;, new Sys.UI.DomEvent(event), { insertionMode: Sys.Mvc.InsertionMode.replace, httpMethod: 'Post' });" type="button" value="Excluir"></input></p> Thanks

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  • IoC in MVP Asp.NET

    - by Diego Dias
    Hello, Guys. I'm developing a application using MVP and I have a question about How inject my dependencis in my presenters class. Because my presente receve too an instance of the my view. I thought of create a viewbase and inside it I create my dependencies instances and inject it in my presenter instance. Could also have a HttpModule that intercept the calls to page and then I could inject my dependencies. I have some ideas but none I can inject my view in constructor only I can inject my view in mey presente by property. Someone have any ideas how do you do to inject my dependencies and my view in constructor of the presenter?

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  • ASP.NET MVC: Accessing ModelMetadata for items in a collection

    - by DanM
    I'm trying to write an auto-scaffolder for Index views. I'd like to be able to pass in a collection of models or view-models (e.g., IEnumerable<MyViewModel>) and get back an HTML table that uses the DisplayName attribute for the headings (th elements) and Html.Display(propertyName) for the cells (td elements). Each row should correspond to one item in the collection. When I'm only displaying a single record, as in a Details view, I use ViewData.ModelMetadata.Properties to obtain the list of properties for a given model. But what happens when the model I pass to the view is a collection of model or view-model objects and not a model or view-model itself? How do I obtain the ModelMetadata for a particular item in a collection?

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  • How to get ID of EditorFor with nested viewmodels in asp.net mvc 2

    - by Luke
    So I have two nested view models, CreditCard - BillAddress. I have a view, "EditBilling", that has EditorFor(CreditCard). The CreditCard EditorTemplate has EditorFor(BillAddress), and the BillAddress EditorTemplate has EditorFor(BillState). The end result is a select list with id "CreditCard_BillAddress_BillState". I need to reference this in javascript, thus need to know the ID. In other situations, with non-nested ViewModels, I have used the following code: $('#<%= ViewData.ModelMetadata.PropertyName %>_BillState') The problem here is that the ModelMetadata.PropertyName property is only aware of the current property, not the parent(s). So I end up with the following: $('#BillAddress_BillState') How does one go about getting the client ID of nested strongly typed helpers? Thanks in advance.

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  • Exclude routing parameters in VaryByParam for Asp.Net 4

    - by HasanGursoy
    I have a routing setting in my global.asax file: routes.MapPageRoute("video-browse", "video/{id}/{title}/", "~/routeVideo.aspx"); My routeVideo.aspx page has caching setting: <%@ OutputCache Duration="10" Location="ServerAndClient" VaryByParam="id" %> But when I request http://localhost/video/6/example1 and http://localhost/video/6/example2 after this, the page is created again. So I think VaryByParam works for * but I only want compile when id changes. Is there a way to define routing parameters at VaryByParam?

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  • ASP.NET Download All Files as Zip

    - by Ronnie Overby
    I have a folder on my web server that has hundreds of mp3 files in it. I would like to provide the option for a user to download a zipped archive of every mp3 in the directory from a web page. I want to compress the files programmatically only when needed. Because the zip file will be quite large, I am thinking that I will need to send the zip file to the response stream as it is being zipped, for performance reasons. Is this possible? How can I do it?

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  • ASP.NET MVC Page - Dropdown control doesn't function with Keyboard Arrow Keys

    - by Rita
    Hi I have a page that has a Dropdown control (ddlDeliveryMethod). So that when the user selects particular option from the Dropdown(using MOUSE), the respective Div ID's are loaded. But instead of Mouse, if we simply use the arrow keys from Keyboard, the respective DIV ID's are not showing. Is there any workaround for this. Appreciate your responses. Here is my code: // based on Delivery method, display the respective fields $("#ddlDeliveryMethod").change(function() { $('#divRegisteredMail').hide(); $('#divRegisteredEmail').hide(); $('#divRegisteredFax').hide(); $('#divSaveForFuture').hide(); switch ($("#ddlDeliveryMethod ").val()) { case ' -- Select one -- ': break; case 'Email': $('#divRegisteredEmail').show(); break; case 'Mail': $('#divRegisteredMail').show(); break; case 'Fax': $('#divRegisteredFax').show(); break; default: caption = "default"; break; } });

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