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  • LinkBuilder.BuildUrlFromExpression not working anymore in .Net 4 / VS 2010 ?

    - by Mose
    Hi, I recently migrating my ASP.Net MVC 1 application from VS.Net 2008 / C# 3.5 to VS.NET 2010 / C# 4.0. I massively used a builder to get URL strings from the strongly typed calls. It looks like this : // sample call : string toSamplePage = Url.To<SampleController>(c => c.Page(parameter1, parameter2)); the code is added as an extension to the default UrlHelper : public static string To<Tcontroller>(UrlHelper helper, Expression<Action<Tcontroller>> action) where Tcontroller : Controller { // based on Microsoft.Web.Mvc.dll LinkBuilder return LinkBuilder.BuildUrlFromExpression<Tcontroller>(helper.RequestContext, helper.RouteCollection, action); } The only problem of this, is the reference to Microsoft.Web.Mvc dll, but the gain in readability was worth it. Problem : it does not work anymore, return (null) whatever the parameters. Questions : is there a better way now to build links from an expression ? (yes I tried to google it without success) is there a trick to have the former LinkBuilder.BuildUrlFromExpression works ? I tried to recompile it into C# 4.0, but the problem is that it implies working on my own compilated version of System.Web.Mvc which is not an option. I'm currently trying to migrate to MVC 2 but I still have issues... Waiting for your suggestions...

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  • What does "active directory integration" mean in your .NET app?

    - by flipdoubt
    Our marketing department comes back with "active directory integration" being a key customer request, but our company does not seem to have the attention span to (1) decide on what functional changes we want to make toward this end, (2) interview a broad range of customer to identify the most requested functional changes, and (3) still have this be the "hot potato" issue next week. To help me get beyond the broad topic of "active directory integration," what does it mean in your .NET app, both ASP.NET and WinForms? Here are some sample changes I have to consider: When creating and managing users in your app, are administrators presented with a list of all AD users or just a group of AD users? When creating new security groups within your app (we call them Departments, like "Human Resources"), should this create new AD groups? Do administrators assign users to security groups within your app or outside via AD? Does it matter? Is the user signed on to your app by virtue of being signed on to Windows? If not, do you track users with your own user table and some kind of foreign key into AD? What foreign key do you use to link app users to AD users? Do you have to prove your login process protects user passwords? What foreign key do you use to link app security groups to AD security groups? If you have a WinForms component to your app (we have both ASP.NET and WinForms), do you use the Membership Provider in your WinForms app? Currently, our Membership and Role management predates the framework's version, so we do not use the Membership Provider. Am I missing any other areas of functional changes? Followup question Do apps that support "active directory integration" have the ability to authenticate users against more than one domain? Not that one user would authenticate to more than one domain but that different users of the same system would authenticate against different domains.

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  • Fasted way to develop data entry screens for a .NET backend ?

    - by jay23
    I am a .NET / C# back end guy. I am working on a app that will have about 200 different data entry screens. For me exposing DTO as a collection for CRUD (IUpdatable and IQueryable) is the easy part, can do it in sleep :-). What I am trying to decide is what type of front end technology will allow me to develop these data entry screens fast. They don't have to be fancy but they are not just plain grid either and on average they have about 15 form fields and some client side data validation (no db look up) Options I am looking at are Use ExtJS on the front and REST / JSON on the back. ASP.NET RIA but I do not know SL (Well XAML) Plain ASP.NET / MVC One idea I had was the DTO will contain the meta data about the form (As Attributes) and the form can be dynamically generated, but i do not want to reinvent the wheel if their is an easy way. I have looked at RAD software but all of them look at the DB and generate screens. I rather want some thing that can look at my DTO and generate screens. Jay

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  • Advice on displaying and allowing editing of data using ASP.NET MVC?

    - by Remnant
    I am embarking upon my first ASP.NET MVC project and I would like to get some input on possible ways to display database data and general best practice. In short, the body of my webpage will show data from my database in a table like format, with each table row showing similar data. For example: Name Age Position Date Joined Jon Smith 23 Striker 18th Mar 2005 John Doe 38 Defender 3rd Jan 1988 In terms of functionality, primarily I’d like to give the user the ability to edit the data and, after the edit, commit the edit to the database and refresh the view.The reason I want to refresh the view is because the data is date ordered and I will need to re-sort if the user edits a date field. My main question is what architecture / tools would be best suited to this fulfil my requirements at a high level? From the research I have done so far my initial conclusions were: ADO.NET for data retrieval. This is something I have used before and feel comfortable with. I like the look of LINQ to SQL but don’t want to make the learning curve any steeper for my first outing into MVC land just yet. Partial Views to create a template and then iterate through a datatable that I have pulled back from my database model. jQuery to allow the user to edit data in the table, error check edited data entries etc. Also, my intial view was that caching the data would not be a key requirement here. The only field a user will be able to update is the field and, if they do, I will need to commit that data to the database immediately and then refresh the view (as the data is date sorted). Any thoughts on this? Alternatively, I have seen some jQuery plug-ins that emulate a datagrid and provide associated functionality. My first thoughts are that I do not need all the functionality that comes with these plug-ins (e.g. zebra striping, ability to sort by column using sort glyph in column headers etc .) and I don’t really see any benefit to this over and above the solution I have outlined above. Again, is there reason to reconsider this view? Finally, when a user edits a date , I will need to refresh the view. In order to do this I had been reading about Html.RenderAction and this seemed like it may be a better option than using Partial Views as I can incorporate application logic into the action method. Am I right to consider Html.RenderAction or have I misunderstood its usage? Hope this post is clear and not too long. I did consider separate posts for each topic (e.g. Partial View vs. Html.RenderAction, when to use jQury datagrid plug-in) but it feels like these issues are so intertwined that they need to be dealt with in contect of each other. Thanks

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  • Nice, clean, simple way of getting a dataset from ASP.NET to plain HTML jQuery or JavaScript library

    - by David S
    I know this is a probable open ended question, and I have tried looking around so much over the last year or two... maybe I am looking for a perfect place that doesn't exist! of course it's all about perception no less.. Anyway, just to clarify what I am trying to do and why: I want to be able to use (primarily for the moment) ASP.NET or services thereof to get a dataset - whatever the source data, I can obviously get a dataset of rows/Columns. I want to be able to, as simply as possible, get that data over to the client via xml/json/whatever, to then use in a "variety" of ways. "Variety" of ways meaning I would like to "easily" bind that data to say a grid, or a combo dropdown or just simply render to a textbox - BUT by referencing the dataset as I would say on the serverside. Now I know this all sounds simplistic, and I know there are lots of complications.. so I have tried the following so far over the last year or so: ExtJS - very good, nice solid framework, but just found it a bit too much to use in everyday basic apps - great if I was building a whole application with it Yahoo YUI - not looked recently, but I guess some of the concepts with ExtJS were similar? JQuery - of course to get data etc, it was ok, and I guess there are so many 3rd party plugins, that a mix and match might work? Adobe SPRY - ironically this was as close to getting a dataset style structure to Javascript/client, although it seemed to drop off/go quiet..? I maybe wrong.. I did have a very cursory play with Tibco GI and another one I cannot remember the name of! but again, it felt like it was great to build a whole app perhaps? Anyway, I am very amazed by all of the technologies coming out, and really not biased one way or the other, I really just want a very simple way of getting data from the server, and having a basic/very flexible way of working with that data in the client without using server technologies.. I need to keep the server flexible as I may need to use PHP, or java technologies not just .NET So again, sorry for the rambles, but if anyone out there has had a simple experience, or would like to share some ideas, it would be very welcomed!! David.

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  • How to Not Submit a Form Using AJAXToolkit AutoComplete Extender?

    - by deepss
    Hi I have used AJAXToolkit AutoComplete extender in my project.It works fines.But the issue is with the form of the page. when i type in the AutoComplete, i get list of suggestions.When i click on the page other than the Autocomplete, the form gets submitted. any suggestions how to stop submission of entire form whenever i click on the page?I use .net 2.0

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  • set calendar extender format

    - by Atzoya
    Does anyone know if there is a way of specifying the Format of a calendar extender with a dynamic value from the aspx? I tried this but it doesnt seem to set the format at all. Does anyone see anything wrong with it: <asp:TextBox ID="tbStartDate" runat="server" /> <act:CalendarExtender ID="clndrStartDate" PopupPosition="Right" runat="server" Format='<%# DefaultDateFormat %>' TargetControlID="tbStartDate"></act:CalendarExtender> and i have the DefaultDateFormat getter in a base page of the code beheind like this: public static string DefaultDateFormat { get { return "dd/MM/yyyy"; } } Any help would be appretiated. Thank you

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  • Can I use some combination of HttpHandler and HttpModule to create an asynchronous file upload?

    - by scottm
    I am trying to write a simple asynchronous file upload control for ASP.Net. I've tried a few implementations out there (AjaxControl Toolkit Async Upload, Telerik RadAsyncUpload, AjaxUploader, Uploadify, etc.), but they all leave me wanting something more. I'd rather not use a Flash component, a simple throbber would be OK. Some don't have client side call backs. I figure you can make an http module that checks the request form's enctype and files collection on BeginRequest and save those files to disk. Then somehow use an httpHandler to poll the module's status but I can't quite figure out how to put it all together asynchronously. Can you help me arrange the pieces?

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  • It is okay to migrate to Asp.NET 4.0 now?

    - by Tarik
    Okay today, as most of you noticed Framework 4.0 has been released. I've been working on a project which is being built on framework 3.5. Since I want to use dynamic keyword and most of the asp.net features like Tableless Menu Control, ClientIDMode and clean web.config etc. I am kinda urging to migrate the unfinished project to 4.0 but I am little hesitating about that.Some times I think it is way better to wait for SP1. So what do you think about it? You guys will migrate to unfinished projects or will still hang out with 3.5 for a while. Thanks.

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  • Accessing a master page from httphandler

    - by vondip
    Hi All, I am developing a small application in asp.net (writing in c#). In my application I am using jquery to perform asynchronous call to the server. I have an http handler that listens in to the requests and does what it needs to do. Problems start when in the handler I need to access information stored in the page , from where the asynchronous call started. When I try this: Page page = HttpContext.Current.Handler as Page; I don't get a page. How else can I access the page itself? Thank you

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  • Call up last exception on an ASP.NET error page.

    - by Aren B
    I've got an error page here SiteError.aspx and it's configured correctly in the web.config to go there when unhandled exceptions are encountered. I want to use this page to log the exception that triggered it as well because I only want to LOG the errors that the users encounter (i.e. if SiteError.aspx is ever hit.) This is the code I Have: In the OnLoad(...) in SiteError.aspx Exception lastEx = Context.Server.GetLastError(); if (lastEx != null) log.Error("A site error was encountered", lastEx); However, my log is never showing up in my Output, and If i breakpoint on line 2 (in this example) code execution is never interupted (after letting the exception clear to ASP.NET handling in the debugger.

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  • How can I pass data from an aspx page to an ascx modal popup?

    - by Erick B
    I'm fairly new to ASP.NET and trying to learn how things are done. I come from a C# background so the code-behind portion is easy, but thinking like a web developer is unfamiliar. I have an aspx page that contains a grid of checkboxes. I have a button that is coded via a Button_Click event to collect a list of which rows are checked and create a session variable out of that list. The same button is referenced (via TargetControlID) by my ascx page's ModalPopupExtender which controls the panel on the ascx page. When the button is clicked, the modal popup opens but the Button_Click event is never fired, so the modal doesn't get its session data. Since the two pages are separate, I can't call the ModalPopupExtender from the aspx.cs code, I can't reach the list of checkboxes from the ascx.cs code, and I don't see a way to populate my session variable and then programmatically activate some other hidden button or control which will then open my modal popup. Any thoughts?

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  • Combobox in jquery

    - by Roy
    Hi, I've searched Internet quite a long time. But no combox box fit my need was found. Can anyone help me? Thanks in advance! What I need is a dropdown list have a editable box, which act exactly as the combobox in Windows desktop applications. I have a list of value for the user, but I also what them to type if the options there doest fit their demand. And I'm using asp.net mvc, I want to make sure the control can be bind by default model binder. Thanks! Best regards

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  • how to retrieve inserted checkbox values in checkbox on asp.net page load ?

    - by user522211
    i have 5 checkboxes in webform and textbox1... when i search the record using the date specified in textbox1 when i enter 11-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox2, and checkbox3 will be disabled and unchecked ..... and after tat when i type 13-Dec-2010 in Textbox1 and click on submit button then checkbox1, checkbox4, and checkbox5 will be disabled and unchecked .....and all the checkbox of 11-Dec-2010 will be enabled for 13-Dec-2010 I M CURRENTLY WORKING IN ASP.NET (VB) My Datbase structure : ID Name Seats Date 1 Sumit 1,2,3 11-Dec-2010 2 Mili 1,4,5 13-Dec-2010 Example of this is that site have a look to know more : what i want : http://www.redbus.in/Booking/SeatSelection.aspx?rt=4034093&doj=28-Feb-2011&dep=05:00%20PM&showSpInst=false

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  • ASP.NET how to get Cache in KB used for this application ?

    - by eugeneK
    I need to know what is Cache size. I've read on this site solution for close problem but it doesn't solves mine. As i know i can get values from PerMon, here is function public static string getCacheSize() { PerformanceCounter pc = new PerformanceCounter("ASP.NET Applications", "Cache % Machine Memory Limit Used","__TOTAL__", true); return string.Format("{0:0.00}%", pc.NextValue()); } 1.it gives me percents when i need KB and there is no item closest to this one in PerfMon 2.it shows 70.5% used while all memory usage is about 50% any help ?

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  • Overriding Page class constructor in ASP.NET code-behind file -- when is it called?

    - by CSharp Noob
    If I override the System.Web.UI.Page constructor, as shown, when does DoSomething() get called in terms of the page lifecycle? I can't seem to find this documented anywhere. namespace NameSpace1 { public partial class MyClass : System.Web.UI.Page { public MyClass() { DoSomething(); } protected void Page_Load(object sender, EventArgs e) { } } } For reference, here is the ASP.NET Page Lifecycle Overview: http://msdn.microsoft.com/en-us/library/ms178472.aspx Turns out the best answer was right in the MSDN article. I just had to look carefully at the diagram.

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  • Only one instance of a scriptmanager can exist on a page

    - by dotnetdev
    Hi, I design an ASP.NET web usercontrol and with a maskeditor and scriptmanager, I always get an object reference not set to an instance of an object exception at runtime. Stacktrace is: [InvalidOperationException: Only one instance of a ScriptManager can be added to the page.] System.Web.UI.ScriptManager.OnInit(EventArgs e) +384613 System.Web.UI.Control.InitRecursive(Control namingContainer) +333 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Control.InitRecursive(Control namingContainer) +210 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +378 What causes this? Thanks

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  • How to implement tagging in asp.net using visual basic.

    - by Marina A
    Hi all how can i implement tagging in my asp.net website using visual basic. is there any online video tutorials? or complete help of tagging and how to show older tags or give new tags to any contents. secondly i want to know how to implement cloud tagging? The say why of tagging this stake overflow is using right now. when we put the mouse on tags text box it suggest some older tags and also we can enter new tags.

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  • How to return dynamic CSS with ASP.NET MVC?

    - by Morten Mertner
    I need a solution that lets me accomplish the following: Returning CSS that is dynamically generated by an action method Choosing CSS file depending on request parameter or cookie Using a tool to combine and compress (minify) CSS I am currently considering why there is no CssResult in ASP.NET MVC, and whether there might be a reason for its absence. Would creating a custom ActionResult not be the best way to go about this? Is there some other way that I've overlooked to do what I need? Any other suggestions or hints that might be relevant before I embark on this task will also be appreciated :)

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  • ASP.NET in VS IDE gives "Expression cannot be evaluated at this time."

    - by S Nash
    I read all of similar questions in SO but none seem to be an answer. Situation is simple. I have a ASP.NET webpage, In a VB code behind file I have the following line: iRendProvider = ddlProvider.SelectedItem.Value where iRendProvider is integer and ddlProvider is a dropdownlist. I put a breakpoint at the above line and code stops there. Now in the immdediate window in I type: ? ddlProvider.SelectedItem.Value I get "Expression cannot be evaluated at this time." If I step over iRendProvider = ddlProvider.SelectedItem.Value To the next line and I type ? iRendProvider , I see the correct value in the immediate window. Question is why this error and how to see contents of ddlProvider.

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  • question about JSON

    - by Rawhi
    Hi, If I have in my db a table called User with name, Id, age fields and I want to get these data and put it in a var as a JSON serialize, then I want to send it to javascript page to reform it as I want . I need to know how to put these data in a var as a JSON, how to read the data in the javascript file (how to deal with each one. for example : array[name]) !!!? which thing is more better to deal with these data in asp.net code then send it in the javascript or to send it to the javascript and then to deal with !!? thank u :D

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  • Passing control's ID to javascript via ScriptControlDescriptor

    - by markiz
    I create a control in CreateChildControls(): HtmlGenericControl mycontrol= HtmlGenericControl("li"); mycontrol.ID = "controlID"; controlId = mycontrol.ID; protected virtual IEnumerable<ScriptDescriptor> GetScriptDescriptors() { ScriptControlDescriptor descriptor = new ScriptControlDescriptor("Project.TEditor", this.ClientID); descriptor.AddProperty("controlId", controlId); return new ScriptDescriptor[] { descriptor }; } Then in javascript i try to find this control using the ID property: alert($get(this.get_controlId())); I get null because the actual control ID has a prefix that was added by asp. How to solve that?

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