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  • Which .NET class does represent the main CONTROLLER class for WebForms ?

    - by Renato Gama
    Hey guys, lately I was studying a bit of Java, when I was taught about a way to implement a controller class, whose resposibility is to redirect the request to an Action, which perfoms a specified work. That was the way I learnt; @Override protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { try { String clazz = req.getRequestURI().replaceAll(req.getContextPath() + "/", "").replaceAll(".java", ""); ((Action)Class.forName("com.myProject.actions." + clazz).newInstance()).execute(req, res); } catch (Exception e) { e.printStackTrace(); } } I know that WebForms also works with HANDLERS, which are kind of actions. For example, each .aspx page inherits from a Page object which is a handler for that specified page. What I couldn't figure out is, which class does get request first and translate it to the specified action (page handler)? Is it a WebForms feature(implementation) or its a IIS resposibility? So, which class represent the main controller for WebForms? Thank you very much.

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  • How do I access a asp.net session variable from APP_CODE??

    - by user313714
    I have seen lots of posts here and elsewhere stating that one can access session variables from app_code. I want to access an already created session. this code errors out because of a null exception. string myFile = HttpContext.Current.Session["UploadedFile"]; this creates a null session variable. System.Web.SessionState.HttpSessionState Session = HttpContext.Current.Session; It looks like I can create a new session variable but not access an already created one. Anyone have any idea what might be giving me problems?

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  • Can I use a static cache Helper method in a NET MVC controller?

    - by Euston
    I realise there have been a few posts regarding where to add a cache check/update and the separation of concerns between the controller, the model and the caching code. There are two great examples that I have tried to work with but being new to MVC I wonder which one is the cleanest and suits the MVC methodology the best? I know you need to take into account DI and unit testing. Example 1 (Helper method with delegate) ...in controller var myObject = CacheDataHelper.Get(thisID, () => WebServiceServiceWrapper.GetMyObjectBythisID(thisID)); Example 2 (check for cache in model class) in controller var myObject = WebServiceServiceWrapper.GetMyObjectBythisID(thisID)); then in model class.............. if (!CacheDataHelper.Get(cachekey, out myObject)) { //do some repository processing // Add obect to cache CacheDataHelper.Add(myObject, cachekey); } Both use a static cache helper class but the first example uses a method signature with a delegate method passed in that has the name of the repository method being called. If the data is not in cache the method is called and the cache helper class handles the adding or updating to the current cache. In the second example the cache check is part of the repository method with an extra line to call the cache helper add method to update the current cache. Due to my lack of experience and knowledge I am not sure which one is best suited to MVC. I like the idea of calling the cache helper with the delegate method name in order to remove any cache code in the repository but I am not sure if using the static method in the controller is ideal? The second example deals with the above but now there is no separation between the caching check and the repository lookup. Perhaps that is not a problem as you know it requires caching anyway?

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  • How can I modify a custom object in an ASP.NET FormView based on a button click?

    - by David
    I have a FormView that modifies an instance of a custom class. The various form controls (TextBox, DropDownList etc.) are working fine. However, I want to include a Button that will modify the state of the DataItem based on some very simple logic. There is no form control which could control this change in a non-confusing way. So I tried adding a Button and modifying the state of the DataItem in the code-behind. But the problem I encounter is that the FormView's DataItem is null/nothing. From reading this SO question it seems the problem is that the item is not databound when the Button's Click event is fired. So, the question; Is it possible to get the DataItem for the FormView during a Button's Click event? and if not: what are my options for implementing this? Thanks in advance. Edit: I can include any code that might help

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  • ASP.NET MVC 2 VB, Not recognising my import.

    - by SLC
    I had a problem with a project I converted from C# to VB, in that the VB version it cannot seem to find an object even though I declared it with an Import statement at the top. I created a new, default MVC 2 VB project, and the same problem occurs there. I create a new MVC 2 application, I then add a reference to System.Data.Services.Client, and in my Index.aspx, in the Content area, I type <% Dim x As DataServiceQueryContinuation %> which is what I want to use. It gives me a blue squiggly line and says Type 'DataServiceQueryContinuation' is not defined. At the top of the page, I add this: <%@ Import Namespace="System.Data.Services.Client" %> The error persists. My original C# version has no such error. I also get this warning: Warning 2 Namespace or type specified in the Imports 'System.Data.Services.Client' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. e:\ASPNETDEBUG\MvcApplication1\MvcApplication1\Views\Home\Index.aspx 10 9 MvcApplication1 Examining the DLL using the tool provided shows that it does have a public member. Also when typing the above, System.Data. provides intellisense but there is no 'Services'. Any ideas?

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  • Unable to use stored procs in a generic repository for the entity framework. (ASP.NET MVC 2)

    - by Matt
    Hi, I have a generic repository that uses the entity framework to manipulate the database. The original code is credited to Morshed Anwar's post on CodeProject. I've taken his code and modified is slightly to fit my needs. Unfortunately I'm unable to call an Imported Function because the function is only recognized for my specific instance of the entity framework public class Repository<E, C> : IRepository<E, C>, IDisposable where E : EntityObject where C : ObjectContext { private readonly C _ctx; public ObjectResult<MyObject> CallFunction() { // This does not work because "CallSomeImportedFunction" only works on // My object. I also cannot cast it (TrackItDBEntities)_ctx.CallSomeImportedFunction(); // Not really sure why though... but either way that kind of ruins the genericness off it. return _ctx.CallSomeImportedFunction(); } } Anyone know how I can make this work with the repository I already have? Or does anyone know a generic way of calling stored procedures with entity framework? Thanks, Matt

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  • How can I flip/rotate a PrintDocument in .NET ?

    - by Simon_Weaver
    I have a document that I want to be flipped / rotated 180 degrees when printed. (This is due to the orientation of label stock in the printer). There is a property PrintDocument.PrinterSettings.LandscapeAngle but it is read only. I think this property is influenced by the printer driver and therefore not 'settable'. Is there a nice way i can rotate the print by 180 degrees without having to do anything too nasty?

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  • .NET: Is it possible to get HttpWebRequest to automatically decompress gzip'd responses?

    - by Cheeso
    In this answer, I described how I resorted to wrappnig a GZipStream around the response stream in a HttpWebResponse, in order to decompress it. The relevant code looks like this: HttpWebRequest hwr = (HttpWebRequest) WebRequest.Create(url); hwr.CookieContainer = PersistentCookies.GetCookieContainerForUrl(url); hwr.Accept = "text/xml, */*"; hwr.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip, deflate"); hwr.Headers.Add(HttpRequestHeader.AcceptLanguage, "en-us"); hwr.UserAgent = "My special app"; hwr.KeepAlive = true; var resp = (HttpWebResponse) hwr.GetResponse(); using(Stream s = resp.GetResponseStream()) { Stream s2 = s; if (resp.ContentEncoding.ToLower().Contains("gzip")) s2 = new GZipStream(s2, CompressionMode.Decompress); else if (resp.ContentEncoding.ToLower().Contains("deflate")) s2 = new DeflateStream(s2, CompressionMode.Decompress); ... use s2 ... } Is there a way to get HttpWebResponse to provide a de-compressing stream, automatically? In other words, a way for me to eliminate the following from the above code: Stream s2 = s; if (resp.ContentEncoding.ToLower().Contains("gzip")) s2 = new GZipStream(s2, CompressionMode.Decompress); else if (resp.ContentEncoding.ToLower().Contains("deflate")) s2 = new DeflateStream(s2, CompressionMode.Decompress); Thanks.

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  • Do you have to install the REST starter kit in asp.net to access APIs?

    - by jonhobbs
    Hi, I'm currently trying to access a REST API for the first time using visual web developer 2008 express edition. Every article I have found says you have to install the WCF REST starter kit which is a .msi file, which would suggest that I have to install it on my machine and presumably our server too. My question is this. Is there a non installable version that I can use, e.g. just by dropping DLLs into the Bin directory and then using the classes contained. Or is there more to it than that and am I just getting very confused about how it works? Jon

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  • When getting substring in .Net, does the new string reference the same original string data or does

    - by Elan
    Assuming I have the following strings: string str1 = "Hello World!"; string str2 = str1.SubString(6, 5); // "World" I am hoping that in the above example str2 does not copy "World", but simply ends up being a new string that points to the same memory space only that it starts with an offset of 6 and a length of 5. In actuality I am dealing with some potentially very long strings and am interested in how this works behind the scenes for performance reasons. I am not familiar enaugh with IL to look into this.

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  • In ASP.NET MVC (3.0/Razor), do you prefer multiple views, or conditionals within views? Why?

    - by Chad
    For my new web app, I'm debating on using multiple views, or conditionals within views. An example scenario would be showing different info to users who are authenticated vs non-authenticated. This could be handled a couple ways. In the controller, check IsAuthenticated and return a view based on that In the view, check IsAuthenticated and show blocks of info based on that Pros of multiple views: Smaller, less complicated view - next to no logic in the view Pros of single views: less view files to maintain The obvious cons are the opposites of the pros: more files to maintain or more complicated view files. Which do you prefer? Why? Any pros/cons I haven't outlined here? Update: Assume each view uses a layout page and partial views to abstract the obviously repetitive code.

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  • Simplest way to update a client-side javascript array variable during a ASP.NET AJAX postback in an

    - by Noel
    If I want to inject a globally scoped array variable into a page's client-side javascript during a full page postback, I can use: this.Page.ClientScript.RegisterArrayDeclaration("WorkCalendar", "\"" + date.ToShortDateString() + "\""); to declare and populate a client-side javascript array on the page. Nice and simple. But I want to do the same from a async postback from an UpdatePanel. The closest I can figure so far is to create a .js file that just contains the var declaration, update the file during the async postback, and then use a ScriptManagerProxy.Scripts.Add to add the .js file to the page's global scope. Is there anything simpler? r iz doin it wrong?

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  • how to find the data key on checkedchanged event of checkbox in a list view in asp.net?

    - by subodh
    I am using a list view inside that in item template i am using a label and a checkbox. I want that whenever user clicks on the check box the value should be updated in a table.i am using a datakeys in listview.on the basis of datakey value should be updated in the table query is string updateQuery = "UPDATE [TABLE] SET [COLUMN] = " + Convert.ToInt32(chk.Checked) + " WHERE PK_ID =" + dataKey + " "; also i want some help in displaying the result as it is inside the table.means if the value for column in table for a particular pkid is 1 then the checkbox shoul be checked. here is the code snippet <asp:ListView ID="lvFocusArea" runat="server" DataKeyNames="PK_ID" onitemdatabound="lvFocusArea_ItemDataBound" > <LayoutTemplate> <table border="0" cellpadding="1" width="400px"> <tr style="background-color: #E5E5FE"> <th align="left"> Focus Area </th> <th> Is Current Focused </th> </tr> <tr id="itemPlaceholder" runat="server"> </tr> </table> </LayoutTemplate> <ItemTemplate> <tr> <td width="80%"> <asp:Label ID="lblFocusArea" runat="server" Text=""><%#Eval("FOCUS_AREA_NAME") %></asp:Label> </td> <td align="center" width="20%"> <asp:CheckBox ID="chkFocusArea" runat="server" OnCheckedChanged="chkFocusArea_CheckedChanged" AutoPostBack="true"/> </td> </tr> </ItemTemplate> <AlternatingItemTemplate> <tr style="background-color: #EFEFEF"> <td> <asp:Label ID="lblFocusArea" runat="server" Text=""><%#Eval("FOCUS_AREA_NAME") %></asp:Label> </td> <td align="center"> <asp:CheckBox ID="chkFocusArea" runat="server" oncheckedchanged="chkFocusArea_CheckedChanged" AutoPostBack="true" /> </td> </tr> </AlternatingItemTemplate> <SelectedItemTemplate> <td> item selected</td> </SelectedItemTemplate> </asp:ListView> help me.

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  • Someone explain to me the meanings behind the naming conventions used in .net?

    - by IbrarMumtaz
    I need someone to explain the following names; Asynchronous Delegates. Asynchronous methods. Asynchronous events. I'm currently going over this for my 70-536 exam and I am covering all my bases so far. The threading chapter and online resources have been good to me on my second read through. Still though, the names used above mean absolutely nothing to me? I would really appreciate the meaning behind the word 'Asynchronous' and its relevance to Delegates, methods and events. Feel free to go into as much detail as you like. Thanks, Ibrar

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  • Model Binding using ASP.NET MVC, getting datainput to the controller.

    - by Calibre2010
    Pretty Basic one here guys. I have a View which holds 2 textfields for input and a submit button <%using (Html.BeginForm("DateRetrival", "Home", FormMethod.Post)){ %> <%=Html.TextBox("sday")%> <%=Html.TextBox("eday")%> <input type="submit" value="ok" id="run"/> <% }%> the following controller action which I want to bind the data input is as follows [AcceptVerbs(HttpVerbs.Get)] public ActionResult DateRetrival() { return View(); } [AcceptVerbs(HttpVerbs.Post)] public ActionResult DateRetrival(string submit) { return null; } When I debug this and look in the action methods parameter, the value is null. When I've entered values in both textboxes and and clicked the submit method.

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  • How do I force a jQuery click event to proceed any control click event on ASP.Net page

    - by Cen
    I've found posts about making a click event with jQuery for a button, however I need a little more then that. When any postback occurs on a page, I need to fire off a jQuery click event. Based on a condition, I want to continue processing (including running the server-side event code after the jQuery code), or, perform a redirect. I'm not quite sure how to go about this. Your help is appreciated!

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  • How to become sharepoint developer from ASP.NET/Silverlight developer?

    - by funwithcoding
    Hello friends, I heard from my peers that knowledge of sharepoint is going to be good for career. We do not use sharepoint at our office. So dont know how to get started. These are my sharepoint newbie questions Is learning sharepoint worth the effort? Where are the resources to learn sharepoint? Is there any reference project I should considering aiming to develop? Appreciate your inputs.

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  • .NET Graphics.ScaleTransform converts print job to bitmap. Any other way to scale text?

    - by Philip Dunaway
    I'm using Graphics.ScaleTransform to stretch lines of text so they fit the width of the page, and then printing that page. However, this converts the print job to a bitmap - for a print with many pages this causes the size of the print job to rise to obscene proportions, and slows down printing immensely. If I don't scale like this, the print job remains very small as it is just sending text print commands to the printer. My question is, is there any way other than using Graphics.ScaleTransform to stretch the width of the text? Sample code to demonstrate this is below (would be called with Print.Test(True) and Print.Test(False) to show the effects of scaling on print job): Imports System.Drawing Imports System.Drawing.Printing Imports System.Drawing.Imaging Public Class Print Dim FixedFont As Font Dim Area As RectangleF Dim CharHeight As Double Dim CharWidth As Double Dim Scale As Boolean Const CharsAcross = 80 Const CharsDown = 66 Const TestString = "!""#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~" Private Sub PagePrinter(ByVal sender As Object, ByVal e As PrintPageEventArgs) Dim G As Graphics = e.Graphics If Scale Then Dim ws = Area.Width / G.MeasureString(Space(CharsAcross).Replace(" ", "X"), FixedFont).Width G.ScaleTransform(ws, 1) End If For CurrentLine = 1 To CharsDown G.DrawString(Mid(TestString & TestString & TestString, CurrentLine, CharsAcross), FixedFont, Brushes.Black, 0, Convert.ToSingle(CharHeight * (CurrentLine - 1))) Next e.HasMorePages = False End Sub Public Shared Sub Test(ByVal Scale As Boolean) Dim OutputDocument As New PrintDocument With OutputDocument Dim DP As New Print .PrintController = New StandardPrintController .DefaultPageSettings.Landscape = False DP.Area = .DefaultPageSettings.PrintableArea DP.CharHeight = DP.Area.Height / CharsDown DP.CharWidth = DP.Area.Width / CharsAcross DP.Scale = Scale DP.FixedFont = New Font("Courier New", DP.CharHeight / 100, FontStyle.Regular, GraphicsUnit.Inch) .DocumentName = "Test print (with" & IIf(Scale, "", "out") & " scaling)" AddHandler .PrintPage, AddressOf DP.PagePrinter .Print() End With End Sub End Class

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  • How can call a jQuery function when it is inside the formview (asp.net control)?

    - by ricky roy
    Hi, All I have a Span in side the Form view. I wanted to Call a Jquery Fucntion when the from load how can i do this? Thanks Waiting for your reply here is my code <asp:FormView ID="FormView1" runat="server" OnItemCommand="FormView1_ItemCommand"> <ItemTemplate> <asp:HiddenField ID="hidProductID" Value='<%#Eval("ProductID") %>' runat="server" /> <asp:HiddenField ID="hidCustomerID" Value='<%#Eval("CustomerID") %>' runat="server" /> <a href='<%=WinToSave.SettingsConstants.SiteURL%>WintoSave/AuctionProduct.aspx?id=<%#Eval("ProductID") %>'> <%#Eval("ProductName")%> </a> <br /> <img src='<%#Eval("ImagePath")%>' alt="Image No available" /> <br /> <asp:Label ID="lblTime" runat="server" Text='<%#Convert.ToDateTime(Eval("ModifiedOn")).ToString("hh:mm:ss") %>'></asp:Label> <span id='Countdown_<%#Eval("ProductID") %>' onload="GetTimeOnLoad('<%#Eval("ModifiedOn")%>','Countdown_<%#Eval("ProductID") %>');"></span> <br /> <asp:Label ID="lblFinalPrice" runat="server" Text='<%#Convert.ToDouble(Eval("FinalPrice")).ToString("#.00")%>'></asp:Label> <br /> <asp:Label ID="lblFullName" runat="server" Text='<%#Eval("FullName") %>'></asp:Label> <br /> <asp:Button ID="btnAddbid" Text="Bid" CommandName="AddBid" CommandArgument='<%#Eval("ID")%>' runat="server" /> </ItemTemplate> </asp:FormView> and following is my jquery code function GetTimeOnLoad(shortly,DivID) { var dt = new Date(shortly); alert(dt); alert(shortly); alert(DivID); var ProductDivID = "#" +DivID; alert(ProductDivID); $(ProductDivID).countdown({ until: dt, onExpiry: liftOff, onTick: watchCountdown, format: 'HMS', layout: '{hnn}{sep}{mnn}{sep}{snn}' }); } function liftOff(){}; function watchCountdown(){}; In above code I Used ' onload="GetTimeOnLoad('<%#Eval("ModifiedOn")%','Countdown_<%#Eval("ProductID") %');" but is not working

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