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  • ASP.NET MVC2 and Browser Caching

    - by Dan
    Hi I have a web application that fetches a lot of content via ajax. For example when a user edits some data, the browser will send the changes using an ajax post and then do an ajax get to get fresh content and replace an existing div on the page with that content. This was working just find with MVC1, but in MVC2 I would get inconsistent results. I've found that MVC1 by default included an Expires item in the response headers set to the current time, but in MVC2 the Expires header is missing. This is a problem with some browsers (IE8) actually using the cached version of the ajax get instead of the fresh version. To deal with the problem I created a simple ActionFilterAttribute that sets the reponse cache to NoCache (see below), which works, but it seems kind of sillly to decorate every controller with this attribute. Is there a global way to set this for every controller? Is this a bug in MVC2 and it really should be setting the expires on every ActionResult/view/page? Don't most MVC programs deal with data entry where stale data is a very bad thing? Thanks Dan public class ResponseNoCachingAttribute : ActionFilterAttribute { public override void OnResultExecuted(ResultExecutedContext filterContext) { base.OnResultExecuted(filterContext); filterContext.HttpContext.Response.Cache.SetCacheability(System.Web.HttpCacheability.NoCache); } }

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  • Asp.Net MVC best way to update cached table

    - by Eddy Mishiyev
    There are certain tables that get called often but updated rarely. One of these tables is Departments. So to save DB trips, I think it is ok to cache this table taking into consideration that the table has very small size. However, once you cached it an issue of keeping the table data fresh occurs. So what is the best way to determine that the table is dirty and therefore requires a reload and how that code should be invoked. I look for solution that will be scalable. So updating the cache right after inserting will not work. So if one machine inserted the record all other on network should get notified to reload the cache. I was thinking for calling corresponding web service from T-SQL but don't really like the idea of consuming recourses on sql server. So what are the best practices to resolve this type of problems. Thanks in advance Eddy

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  • how to pass querystring in friendly url in asp.net mvc

    - by frosty
    I have the following action. I can hit this with /basket/address?addressId=123 However i wonder how i can hit it with /basket/address/123 public ActionResult Address(int addressId) { return RedirectToAction("Index"); } my routes routes.MapRoute( "Default", // Route name "{controller}.aspx/{action}/{id}", // URL with parameters new { controller = "Home", action = "Index", id = "" } // Parameter defaults );

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  • Resizing Images with ASP.NET and saving to Database

    - by Ryan
    I need to take an uploaded image, resize it, and save it to the database. Simple enough, except I don't have access to save any temp files to the server. I'm taking the image, resizing it as a Bitmap, and need to save it to a database field as the original image type (JPG for example). How can I get the FileBytes() like this, so I can save it to the database? Before I was using ImageUpload.FileBytes() but now that I'm resizing I'm dealing with Images and Bitmaps instead of FileUploads and can't seem find anything that will give me the bytes. Thanks!

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  • ambient values in mvc2.net routing

    - by Muhammad Adeel Zahid
    Hello Everyone, i have following two routes registered in my global.asax file routes.MapRoute( "strict", "{controller}.mvc/{docid}/{action}/{id}", new { action = "Index", id = "", docid = "" }, new { docid = @"\d+"} ); routes.MapRoute( "default", "{controller}.mvc/{action}/{id}", new { action = "Index", id = "" }, new { docConstraint = new DocumentConstraint() } ); and i have a static "dashboard" link in my tabstrip and some other links that are constructed from values in db here is the code <ul id="globalnav" class = "t-reset t-tabstrip-items"> <li class="bar" id = "dashboard"> <%=Html.ActionLink("dash.board", "Index", pck.Controller, new{docid =string.Empty,id = pck.PkgID }, new { @class = "here" })%> </li> <% foreach (var md in pck.sysModules) { %> <li class="<%=liClass%>"> <%=Html.ActionLink(md.ModuleName, md.ActionName, pck.Controller, new { docid = md.DocumentID}, new { @class = cls })%> </li> <% } %> </ul> Now my launching address is localhost/oa.mvc/index/11 clearly matching the 2nd route. but when i visit any page that has mapped to first route and then come back to dash.board link it shows me localhost/oa.mvc/7/index/11 where 7 is docid and picked from previous Url. now i understand that my action method is after docid and changing it would not clear the docid. my question here is that can i remove docid in this scenario without changing the route. regards adeel

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  • ASP.NET AsyncPostBackTrigger disables button's OnClick function???

    - by hahuang65
    I saw another post like this: http://stackoverflow.com/questions/1795621/asyncpostbacktrigger-disables-buttons But I don't really know what to make of it. The accepted answer was poorly typed. Basically, I have a button with an OnClick function. I also have a UpdatePanel, with is AsyncPostBackTrigger set to that same button. It seems that if I do this, my Button no longer does ANYTHING. I guess it's because I have a Page_Load() event... Can anyone explain why this is? And how should I set up my webpage if I can't use the Page_Load() function? Oh and if I put my Button in a UpdatePanel, it also won't do anything, probably because of the same reason. This is a section of my code: <asp:FileUpload id="FileUploadControl" runat="server" /> <asp:Button runat="server" id="UploadButton" text="Upload" OnClick="uploadClicked" /> <br /><br /> <asp:Label runat="server" id="StatusLabel" text="Upload status: " /> <br /> <asp:UpdatePanel ID="UpdatePanel2" runat="server" updatemode="Conditional" > <ContentTemplate> <asp:DropDownList ID="songList" runat="server" /> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="RefreshButton" /> </Triggers> </asp:UpdatePanel> Thanks in advance.

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  • ValidatorCallout(asp.net ajax) and CheckListBox

    - by TJ
    Hi, Just wondering if anyone has a good solution to utlise ValidatorCallout with a CheckListBox ? The only solution I could see was creating a custom RequiredFieldValidator as per http://www.4guysfromrolla.com/ASPScripts/PrintPage.asp?REF=%2Fwebtech%2Ftips%2Ft040302-1.shtml. If anyone has any good solution, it would be appreciated if you could share it. thanks

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  • ASP.NET ObjectDataSource, change CommandName property of FromView Button

    - by Tone
    I have an ObjectDataSource that I'm using with a FormView, and it works fine, but i want to change one small thing. On the FormView the button that fires the update has the CommandName attribute set to "Update," but I would like to change that attribute to something other than "Update" - when I do change that attribute the update no longer works. The reason I want to do this is I have multiple FormViews on the same page and need to have multiple update buttons. Below is my code: FormView: <asp:FormView ID="fvGeneralInfo" runat="server" DataSourceID="objInstructorDetails" CssClass="Gridview" OnItemCommand="fvGeneralInfo_ItemCommand" DefaultMode="Edit"> <EditItemTemplate> <table> .... <tr> <td style="text-align:right;"> <asp:Label runat="server" ID="lblGeneralInfoMessage" Text="General Info updated successfully" Visible="false" /> </td> <td> <asp:Button runat="server" ID="btnUpdateGeneralInfo" ValidationGroup="UpdateGeneralInfo" Text="Update" CommandName="Update" /> <asp:Button runat="server" ID="btnCancelGeneralInfo" Text="Cancel" CommandName="CancelGeneralInfo" /> </td> </tr> </table> </EditItemTemplate> </asp:FormView> ObjectDataSource: <asp:ObjectDataSource ID="objInstructorDetails" runat="server" TypeName="AIMLibrary.BLL.Instructor" SelectMethod="GetInstructorDetails" InsertMethod="InsertInstructor" UpdateMethod="UpdateInstructor" OnInserting="objInstructorDetails_OnInserting" OnUpdating="objInstructorDetails_OnUpdating" > <SelectParameters> <asp:QueryStringParameter Name="InstructorId" QueryStringField="InstructorId" /> </SelectParameters> <UpdateParameters> <asp:Parameter Name="instructorId" Type="Int32" /> <asp:Parameter Name="firstName" Type="String" DefaultValue="" /> <asp:Parameter Name="middleName" Type="String" DefaultValue="" /> <asp:Parameter Name="lastName" Type="String" DefaultValue="" /> <asp:Parameter Name="phone" Type="String" DefaultValue="" /> <asp:Parameter Name="email" Type="String" DefaultValue="" /> <asp:Parameter Name="addressLine1" Type="String" DefaultValue="" /> <asp:Parameter Name="addressLine2" Type="String" DefaultValue="" /> <asp:Parameter Name="city" Type="String" DefaultValue="" /> <asp:Parameter Name="state" Type="String" DefaultValue="" /> <asp:Parameter Name="zip" Type="String" DefaultValue="" /> <asp:Parameter Name="abcBoardNumber" Type="String" DefaultValue="" /> </UpdateParameters> </asp:ObjectDataSource>

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  • Setting current culture with threads in ASP.NET MVC

    - by mare
    Here's an example of SetCulture attribute which inside does something like this: public void OnActionExecuting(ActionExecutingContext filterContext) { string cultureCode = SetCurrentLanguage(filterContext); if (string.IsNullOrEmpty(cultureCode)) return; HttpContext.Current.Response.Cookies.Add( new HttpCookie("Culture", cultureCode) { HttpOnly = true, Expires = DateTime.Now.AddYears(100) } ); filterContext.HttpContext.Session["Culture"] = cultureCode; CultureInfo culture = new CultureInfo(cultureCode); System.Threading.Thread.CurrentThread.CurrentCulture = culture; System.Threading.Thread.CurrentThread.CurrentUICulture = culture; } I was wondering how does this affect a site with multiple users logged on and each one setting their own culture? What is the scope of a thread here with regards to the IIS worker process (w3wp) that the site is running in?

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  • Please Explain .NET Delegates

    - by user275561
    So I read MSDN and Stack Overflow. I understand what the Action Delegate does in general but it is not clicking no matter how many examples I do. In general, the same goes for the idea of delegates. So here is my question. When you have a function like this: public GetCustomers(Action<IEnumerable<Customer>,Exception> callBack) { } What is this, and what should I pass to it?

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  • Logout solution (ASP.NET)

    - by Irgat
    I programmed a web site, prepared a login mechanism(via textbox, not Login tools), users want to logout, they click logout button. However, my problem is that if users don't click logout button or close web page or switch another one, How can I understand this situation? According my mechanism, when users logout ,in DB some insertion and delete operation are making. I also want to do this with closing page,switch another one. Thanks.

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  • JQuery in ASP.NET - Form Validation Issue

    - by user1026288
    It's not working at all and I'm not sure why. Ideally I'd like to have all the errors pop up in a modal dialog box. But right now I can't even get it to work normally. Any help would be appreciated. Thanks. HTML <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.0/jquery.min.js" type="text/javascript"></script> <script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.8.16/jquery-ui.min.js" type="text/javascript"></script> <script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.min.js" type="text/javascript"></script> <script src="../Scripts/Frame.js" type="text/javascript"></script> </head> <body runat="server" id="bodyLogin"> <div runat="server" id="frameLogin"> <form runat="server" id="formLogin"> <asp:CheckBox runat="server" ID="checkboxRemember" /> <div><span id="un">Username</span><div id="forgotUsername">?</div><br /> <asp:TextBox runat="server" ID="textUsername" Name="username" /></div> <div><span id="pw">Password</span><div id="forgotPassword">?</div><br /> <asp:TextBox runat="server" ID="textPassword" Name="password" TextMode="Password" /></div> <asp:Button runat="server" ID="buttonLogin" Text="L" /> <asp:Button runat="server" ID="buttonRegister" Text="R" /> </form> </div> <div id="dialog" title="Errors" style="display:none;"><ul></ul></div> </body> </html> JQuery <script type="text/javascript"> $(function () { $("#formLogin").validate({ rules: { username: { required:true, minlength:3, maxlength:15 }, password: { required:true, minlength:6, maxlength:15 }, }, messages: { username: { required: "Username is required.", minlength: "Username minimum length is 3 characters.", maxlength: "Username maxumum length is 15 characters." }, password: { required: "Password is required.", minlength: "Password minumum length is 6 characters.", maxlength: "Password maximum length is 15 characters." } } }); }); </script>

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  • Incorrect new Uri(base, relative) behaviour in .NET

    - by dr. evil
    When you create a new Uri like this: New Uri(New Uri("http://example.com/test.php"),"?x=y") it returns: http://example.com/?x=y It was supposed to return: http://example.com/test.php?x=y according to the every major browser out there (I'm not quite sure what RFC says though). Is this is a bug or is there any other function out there which behaves correctly, also what's the best way to fix it without reinventing the wheel?

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  • Export data as Excel file from ASP.NET

    - by Yongwei Xing
    Hi all I have data like below AAAAAA BBBBBB CCCCCC DDDDDD EEEEEE Now there is button on the page,when I click the button, the browser would download a excel file with the data above, and stay current page. Is there any simple way to do it? The data is very simple. only one column, and not huge. Best Regards,

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  • ASP.NET declare a CSS stylesheet one time only

    - by Grant
    Hi, if i have a single CSS stylesheet for a website and only want to declare it once, that is, not use the following code on every aspx page.. <link href="stylesheets/general.css" rel="stylesheet" type="text/css" /> Am i forced to use a .master page? or is there another way to do this..

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  • Problem with ASP.NET MVC DropDownList not displaying selected value

    - by Jova
    I have an aspx page which allows me to edit articles. Among things I can edit is which category the article belongs to. The category is chosen through a DropDownList as shown here, <%= Html.DropDownList("categoryID", (IEnumerable<SelectListItem>)ViewData["CategoryID"], new { @class = "textbox" }) %> However, the articles category isn't selected when I go to that page. The ViewData I use for the DropDownList looks like this, ViewData["CategoryID"] = new SelectList(categories, "CategoryID", "Title", article.CategoryID); Which should select the article.CategoryID as it's selected value. Have I done this wrong?

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  • Various asp controls in a ASP.NET page

    - by Filipe Costa
    Hello. I am creating a products page, where the user selects an option in a radiobuttonlist for example, and then a control with the various options of that product appears in a placeholder or in a div when on of the radiobuttons is selected. At the moment this is the code: aspx: <form runat="server"> <asp:CheckBoxList ID="Lentes" runat="server" OnClick="EscolheLentes"> <asp:ListItem Value="LU"> Lentes Unifocais </asp:ListItem> <asp:ListItem Value="LP"> Lentes Progressivas </asp:ListItem> </asp:CheckBoxList> <asp:PlaceHolder runat="server" ID="PHLentes"></asp:PlaceHolder> </form> aspx.vb: Protected Sub EscolheLentes() Dim ControlLente As Control If (Me.Lentes.Items.FindByValue("LU").Selected) Then ControlLente = LoadControl("LentesUnifocais.ascx") ElseIf (Me.Lentes.Items.FindByValue("LP").Selected) Then ControlLente = LoadControl("LentesProgressivas.ascx") End If Me.PHLentes.Controls.Add(ControlLente) End Sub Need to use some ajax to load the control right? Am i going in the right direction? Thanks.

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  • Fill ComboBox Dynamically in asp.net.. help required

    - by Abid Ali
    The Scenario which i have thought and which i want to do is that I have 2 combo boxes.. One of Country and One of Cities.. On Page Load, Country Combo box must be filled with the corresponding values present in the Database and at that time My Cities Combo box should be hidden.. By selecting the Country from the Filled Country Combo Box, the hidden Combo Box that is the Cities Combo Box visible to true and filled with those cities that the user selected the country from the country combo box... Can any one help me with that?

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  • asp.net-mvc feature - one css file per (view / master-page / user-control)

    - by Mendy
    I'm trying to implement the following feature: I want just one css file to be attached for any page that I rendered. For example take StackOverflow site. For the questions page, we will have questions.css file. so.com/questions ---> questions.css so.com/question/1234/title ---> question.css so.com/about ---> about.css so.com/faq ---> faq.css Now, I know that this css files share code in common, because they may have the same MasterPage(s) / UserControls. So, the solution need to take into account MasterPages, views and usercontrols as well. So, what will be the right solution for this kind of problem? I'm thinking about one solution, I'll put is as an answer, but maybe you have a better solution for this?

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  • Need help with this Regex + UrlRewriter.NET please :)

    - by Pure.Krome
    Previously, on StackOverflow ... (Summarized) I need to capture all requests, for a particluar subdomain .. and rewrite their destination. Now, the trick to determining the host via regex was solved. Now, i need to make sure all requests to the root index page is rewritten, but i can't figure out the correct regex to find the 'homepage' / website root. this is what i have.... <if header="HTTP_HOST" match="^foo\.mydomain\.com\.au(?::\d+)?/?$"> <!-- snip some other rewrites, eg./buying/product -> ~/Pages/Foo/Bar.aspx --> <rewrite url="^/$" to="~/Pages/SomeWeirdFolder/Home.aspx" processing="stop"/> </if> Now if one of the rewrites were not found, then it falls through and continues. So .. can anyone please help?

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  • ASP.net Repeater Control Problem (nothing outputted from datasource(sqldatareader))

    - by Phil
    I have the following code to get the repeaters' data in my usercontrol (content.ascx.vb): If did = 0 Then s = "select etc (statement works on server)" x = New SqlCommand(s, c) x.Parameters.Add("@contentid", Data.SqlDbType.Int) x.Parameters("@contentid").Value = contentid c.Open() r = x.ExecuteReader If r.HasRows Then Contactinforepeater.DataSource = r End If c.Close() r.Close() Else s = "select etc (statement works on server)" x = New SqlCommand(s, c) x.Parameters.Add("@contentid", SqlDbType.Int) x.Parameters("@contentid").Value = contentid x.Parameters.Add("@did", SqlDbType.Int) x.Parameters("@did").Value = did c.Open() r = x.ExecuteReader If r.HasRows Then Contactinforepeater.DataSource = r c.Close() r.Close() End If End If Then I have the following repeater control markup in my usercontrol (content.ascx): <asp:Repeater ID="Contactinforepeater" runat="server"> <HeaderTemplate> <h1>Contact Information</h1> </HeaderTemplate> <ItemTemplate> <table width="50%"> <tr> <td colspan="2"><%#Container.DataItem("position")%></td> </tr> <tr> <td>Name:</td> <td><%#Container.DataItem("surname")%></td> </tr> <tr> <td>Telephone:</td> <td><%#Container.DataItem("telephone")%></td> </tr> <tr> <td>Fax:</td> <td><%#Container.DataItem("fax")%></td> </tr> <tr> <td>Email:</td> <td><%#Container.DataItem("email")%></td> </tr> </table> </ItemTemplate> <SeparatorTemplate><br /><hr /><br /></SeparatorTemplate> </asp:Repeater> When I insert this usercontrol into default.aspx with this code: <%@ Register src="Modules/Content.ascx" tagname="Content" tagprefix="uc1" %> and <form id="form1" runat="server"> <div> <uc1:Content ID="Content" runat="server" /> </div> </form> I do not get any error messages but the expected content from the database is not displayed. Can someone please show me the syntax to get this working or point out where I am going wrong? Thanks in advance!

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