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  • How do I Export to excel on aspx page?

    - by meltdownmonk
    I am trying to take data that I request from an access database and put it into and excel file on the client computer. I usually use ajax to request a summary of the data I need. It is formatted into an html table. I need that table to be in an excel format for the user to download. What I have tried already is to use the vb.net code to open excel and silently save the data to a file, however I realized it's the sever side that opens excel, not the client side, in my locally testing of the code, excel would open on my machine and create the file. When running this on the network, I realized excel isn't on the server, I am not sure if I should just install it, or try and steam the file.

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  • ASP.NET RedirectPermanent Method using C# and VB.NET

    301 redirection is essential for the best user experience. If something on your website has been changed or moved to a new permanent location, users will need to be permanently redirected. In addition, search engines can follow this type of redirection, and this redirected-to page will now be the one to rank in Google or other search engines, replacing the old page. There are different ways to implement the RedirectPermanent method. This tutorial will illustrate these common techniques with sample VB.NET or C# code. Creating the Sample ASP.NET 4.0 Website RedirectPermanent is new in ASP.NET 4....

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  • ASP.NET Podcast Show #142 - MonoTouch - iPhone Development with .NET/C# - Video & Audio

    Subscribe to Everything. Subscribe to WMV. Subscribe to M4V. Subscribe to MP3. Download WMV. Download M4V. Download MOV. Download MP3. Show Notes: Apple, Developers, and Licensing.Why Develop on the iPhone.What is Mono and MonoTouch.Getting started with a Hello World style application.UITableView with a custom table cell.Acceleration. Note: There is a shake event, this is done to show acceleration.MonoTouch ebook.Professional iPhone Development wit MonoTouch and .NET/C#....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Using Build Manager Class to Load ASPX Files and Populate its Controls

    - by Sandhurst
    I am using BuildManager Class to Load a dynamically generated ASPX File, please note that it does not have a corresponding .cs file. Using Following code I am able to load the aspx file, I am even able to loop through the control collection of the dynamically created aspx file, but when I am assigning values to controls they are not showing it up. for example if I am binding the value "Dummy" to TextBox control of the aspx page, the textbox remains empty. Here's the code that I am using protected void Page_Load(object sender, EventArgs e) { LoadPage("~/Demo.aspx"); } public static void LoadPage(string pagePath) { // get the compiled type of referenced path Type type = BuildManager.GetCompiledType(pagePath); // if type is null, could not determine page type if (type == null) throw new ApplicationException("Page " + pagePath + " not found"); // cast page object (could also cast an interface instance as well) // in this example, ASP220Page is a custom base page System.Web.UI.Page pageView = (System.Web.UI.Page)Activator.CreateInstance(type); // call page title pageView.Title = "Dynamically loaded page..."; // call custom property of ASP220Page //pageView.InternalControls.Add( // new LiteralControl("Served dynamically...")); // process the request with updated object ((IHttpHandler)pageView).ProcessRequest(HttpContext.Current); LoadDataInDynamicPage(pageView); } private static void LoadDataInDynamicPage(Page prvPage) { foreach (Control ctrl in prvPage.Controls) { //Find Form Control if (ctrl.ID != null) { if (ctrl.ID.Equals("form1")) { AllFormsClass cls = new AllFormsClass(); DataSet ds = cls.GetConditionalData("1"); foreach (Control ctr in ctrl.Controls) { if (ctr is TextBox) { if (ctr.ID.Contains("_M")) { TextBox drpControl = (TextBox)ctr; drpControl.Text = ds.Tables[0].Rows[0][ctr.ID].ToString(); } else if (ctr.ID.Contains("_O")) { TextBox drpControl = (TextBox)ctr; drpControl.Text = ds.Tables[1].Rows[0][ctr.ID].ToString(); } } } } } } }

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  • Can I write a .NETCF Partial Class to extend System.Windows.Forms.UserControl?

    - by eidylon
    Okay... I'm writing a .NET CF (VBNET 2008 3.5 SP1) application, which has one master form, and it dynamically loads specific UserControls based on menu click, in a sort of framework idea. There are certain methods and properties these controls all need to work within the app. Right now I am doing this as an Interface, but this is aggravating as all get up, because some of the methods are optional, and yet I MUST implement them by the nature of interfaces. I would prefer to use inheritance, so that I can have certain code be inherited with overridability, but if I write a class which inherits System.Windows.Forms.UserControl and then inherit my control from that, it squiggles, and tells me that UserControls MUST inherit directly from System.Windows.Forms.UserControl. (Talk about a design flaw!) So next I thought, well, let me use a partial class to extend System.Windows.Forms.UserControl, but when I do that, even though it all seems to compile fine, none of my new properties/methods show up on my controls. Is there any way I can use partial classes to 'extend' System.Windows.Forms.UserControl? For example, can anyone give me a code sample of a partial class which simply adds a MyCount As Integer readonly property to the System.Windows.Forms.UserControl class? If I can just see how to get this going, I can take it from there and add the rest of my functionality. Thanks in advance! I've been searching google, but can't find anything that seems to work for UserControl extension on .NET CF. And the Interface method is driving me crazy as even a small change means updating ALL the controls whether they need to 'override' the method or not.

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  • Protect .net Web Service URL

    - by Nirmal
    Hello All... I have created Web Service using Asp.net 3.5. Now it's working perfectly in live windows server, and giving me perfect xml while invoking it using some url like : http://www.somedomain.com/Service.asmx?op=fetchData Now My question is when I am accessing url like : http://www.somedomain.com/Service.asmx it's listing my created web services. What if I don't wanna list down the available web services to end users. Thanks in advance...

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  • Converting JPEG colorspace (Adobe RGB to sRGB) on Windows (.Net)

    - by Imageree
    I need to generate thumbnail and medium sized images from large photos. These smaller photos are for display in an online gallery. Many of the photographers are submitting JPEG images using Adobe RGB. I would like to use sRGB for all thumbnails and medium size images I am using dotnet (asp.net) and need a way to convert from Adobe RGB to sRGB without losing any quality. Thanks in advance.

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  • .NET - How to debug a dll ?

    - by Amokrane
    Hi, I need to debug a class library project that is provided to the main project (an ASP .NET website) as a DLL. For example, I need to put some breakpoints in order to check what's happening during the execution. I tried this : http://msdn.microsoft.com/en-us/library/605a12zt.aspx, unfortunately it didn't work... Any idea? Thanks

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  • ADO.net, Check if ObjectContext is writeable

    - by user287107
    I have an embedded database in an asp.net mvc project. If I try to write to the file, I sometimes get a write failed exception because the SQL Server can't write to the file. How can I check an ObjectContext, if its writeable, without actually writing something to the database?

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  • Use fileupload as template field in a details view

    - by MyHeadHurts
    I have an admin page where a user will select a document path and add that path to a certain column of a database. I am using a fileupload on the page where they can find the document and copy the path and then paste it into the details view. However, I want to skip this step and I want them to select a document and automatically make the path show up in the details view. <asp:FileUpload ID="FileUpload1" runat="server" Visible="False" Width="384px" /><br /> <br /> <div> <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional"> <ContentTemplate> <center> <asp:DetailsView ID="DetailsView1" runat="server" AllowPaging="True" AutoGenerateRows="False" DataKeyNames="ID" DataSourceID="SqlDataSource1" Height="128px" Width="544px" Visible="False" OnModeChanged="Button2_Click" CellPadding="4" ForeColor="#333333" GridLines="None" > <Fields> <asp:BoundField DataField="Order" HeaderText="Order" SortExpression="Order" /> <asp:BoundField DataField="Department" HeaderText="Department" SortExpression="Department"/> <asp:BoundField DataField="DOC_Type" HeaderText="DOC_Type" SortExpression="DOC_Type" /> <asp:BoundField DataField="Title" HeaderText="Title" SortExpression="Title" /> <asp:BoundField DataField="Revision" HeaderText="Revision" SortExpression="Revision" /> <asp:BoundField DataField="DOC" HeaderText="DOC" SortExpression="DOC" /> <asp:BoundField DataField="Active" HeaderText="Active" SortExpression="Active" /> <asp:BoundField DataField="Rev_Date" HeaderText="Rev_Date" SortExpression="Rev_Date" /> <asp:BoundField DataField="ID" HeaderText="ID" InsertVisible="False" ReadOnly="True" SortExpression="ID" Visible="False" /> <asp:CommandField ShowInsertButton="True" /> </Fields> <FooterStyle BackColor="#5D7B9D" BorderStyle="None" Font-Bold="True" ForeColor="White" /> <CommandRowStyle BackColor="#E2DED6" BorderStyle="None" Font-Bold="True" /> <RowStyle BackColor="#F7F6F3" BorderStyle="None" ForeColor="#333333" /> <FieldHeaderStyle BackColor="#E9ECF1" BorderStyle="None" Font-Bold="True" /> <EmptyDataRowStyle BorderStyle="None" /> <PagerStyle BackColor="#284775" BorderStyle="None" ForeColor="White" HorizontalAlign="Center" /> <HeaderStyle BackColor="#5D7B9D" BorderStyle="None" Font-Bold="True" ForeColor="White" /> <InsertRowStyle BorderStyle="None" /> <EditRowStyle BackColor="#999999" BorderStyle="None" /> <AlternatingRowStyle BackColor="White" BorderStyle="None" ForeColor="#284775" /> </asp:DetailsView> &nbsp; <br /> I need to get the fileupload1 into the DOC contenttemplate area so instead of showing an empty textbox it will show just a textbox it will show the fileupload

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  • How to send emails with a Return Path in .net 3.5

    - by Haroon
    Can any one guide me on how i can send emails with a return path in ASP.net 3.5 / C# 3.5. I know this was possible few years back but now due to spoofing issues this is not possible. I have been looking on internet but no use. I want the emails if bounced, should reach my bounce mail box, which could be like [email protected]. Please guide. Really stuck ... Best regards, Haroon

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  • What are some good/reputable/widely-used libraries written in VB.NET?

    - by Dan Tao
    Generally speaking, when VB.NET and C# are compared, there is a lot of strong support for C#, accompanied by some bashing of VB.NET until a respected developer comes along and acts as The Voice Of Reason, pointing out that while VB prior to VB.NET had its fair share of issues, VB.NET is really a very strong, fully OOP language that is, feature-wise, right about on par with C# (with the exception of certain things like a full-bodied lamba syntax [pre-VB10] or the yield keyword, as many C# faithfuls are quick to point out). I myself, having written plenty of code in both VB.NET and C#, fall squarely in the "I prefer C#, but don't consider VB.NET any less of a language" camp. However, one thing I have noticed is that when it comes to respected and/or widely-used libraries for .NET, everyting is written in C#. Or at least that's been my impression. This strikes me as a little strange because, aside from the abovementioned sprinkling of nice features (in particular the yield keyword), I tend to view the VB.NET/C# divide as primarily a matter of personal taste. Obviously, plenty of developers prefer C#. But I personally know some developers (good ones) who prefer VB.NET, which would lead me to suspect that surely some libraries (good ones) would be written in VB.NET. They must be out there, and I just haven't found them. What are some good libraries that've been written in VB.NET? The best would be open source, as that would allow interested developers to take a look at some good VB.NET code and see how effective the language can be when used properly. But I'd be interested to know about any libraries at all, particularly reputable ones.

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  • Quartz.NET trigger not firing

    - by billy_bob_the
    i am using Quartz.NET in my ASP.NET web application. i put the following code in a button click handler to make sure that it executes (for testing purposes): Quartz.ISchedulerFactory factory = new Quartz.Impl.StdSchedulerFactory(); Quartz.IScheduler scheduler = factory.GetScheduler(); Quartz.JobDetail job = new Quartz.JobDetail("job", null, typeof(BackupJob)); Quartz.Trigger trigger = Quartz.TriggerUtils.MakeDailyTrigger(8, 30); // i edit this each time before compilation (for testing purposes) trigger.StartTimeUtc = Quartz.TriggerUtils.GetEvenSecondDate(DateTime.UtcNow); trigger.Name = "trigger"; scheduler.ScheduleJob(job, trigger); scheduler.Start(); here's "BackupJob": public class BackupJob : IJob { public BackupJob() { } public void Execute(JobExecutionContext context) { NSG.BackupJobStart(); } } my question: why is "BackupJobStart()" not firing? i've used similar code before and it worked fine. EDIT: @Andy White, i would have it in Application_Start in Global.asax. this doesn't work which is why i moved it to a button click handler to narrow down the problem.

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  • Setting Session Variable from UpdatePanel

    - by Gavin
    I am using ASP.NET 2.0 AJAX Extensions 1.0 with the version v1.0.20229 of the AJAX Control Toolkit (which to my knowledge is the latest for .NET 2.0/Visual Studio 2005). My web page (aspx) has a DropDownList control on an UpdatePanel. In the handler for the DropDownList's SelectedIndexChanged event I attempt to set a session variable. The first time the event is fired, I get a Sys.WebForms.PageRequestManagerParserErrorException: "The message received from the server could not be parsed". If I continue, subsequent SelectedIndexChanged's are handled successfully. I have stumbled upon a solution whereby if I initialise the session variable in my Page_Load (so the event handler is just setting the value of a session variable that already exists as opposed to creating a new one) the problem goes away. I'm happy to do this, but I'm curious as to exactly what the underlying cause is. Can anyone explain? (My suspicion is that setting the session variable receives a response from the server which is then returned to the 'caller', but it's not the sort of response it knows how to deal with causing the exception?) EDIT: I reproduced the problem in a seperate little project: Default.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="SessionTest._Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <asp:ScriptManager ID="ScriptManager1" runat="server" /> <div> <asp:UpdatePanel id="upCategorySelector" runat="server"> <ContentTemplate> Category: <asp:DropDownList ID="ddlCategory" runat="server" AutoPostBack="true" OnSelectedIndexChanged="ddlCategories_SelectedIndexChanged"> <asp:ListItem>Item 1</asp:ListItem> <asp:ListItem>Item 2</asp:ListItem> <asp:ListItem>Item 3</asp:ListItem> </asp:DropDownList> </ContentTemplate> </asp:UpdatePanel> </div> </form> </body> </html> Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; namespace SessionTest { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { // If I do this, the exception does not occur. if (Session["key"] == null) Session.Add("key", 0); } protected void ddlCategories_SelectedIndexChanged(object sender, EventArgs e) { // If Session["key"] has not been created, setting it from // the async call causes the excaption Session.Add("key", ((DropDownList)sender).SelectedValue); } } }

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  • Asp.net mvc 2 .net 4.0 error when View model type is Tuple with more than 4 items

    - by Bojan
    When I create strongly typed View in Asp.net mvc 2, .net 4.0 with model type Tuple I get error when Tuple have more than 4 items example 1: type of view is Tuple<string, string, string, string> (4-tuple) and everything works fine view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<Tuple<string, string, string, string>>" %> controller: var tuple = Tuple.Create("a", "b", "c", "d"); return View(tuple); example 2: type of view is Tuple<string, string, string, string, string> (5-tuple) and I have this error: Compiler Error Message: CS1003: Syntax error, '>' expected view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<Tuple<string, string, string, string, string>>" %> controller: var tuple = Tuple.Create("a", "b", "c", "d", "e"); return View(tuple); example 3 if my view model is of type dynamic I can use both 4-tuple and 5-tuple and there is no error on page view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> controller: dynamic model = new ExpandoObject(); model.tuple = Tuple.Create("a", "b", "c", "d"); return View(model); or view: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/WebUI.Master" Inherits="System.Web.Mvc.ViewPage<dynamic>" %> controller: dynamic model = new ExpandoObject(); model.tuple = Tuple.Create("a", "b", "c", "d", "e"); return View(model); Even if I have something like Tuple<string, Tuple<string, string, string>, string> 3-tuple and one of the items is also a tuple and sum of items in all tuples is more than 4 I get the same error, Tuple<string, Tuple<string, string>, string> works fine

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  • How to debug UrlRewriter.NET?

    - by vfilby
    I have looked at their help page it seems like I can register a debug logger that outputs information to the 'standard ASP.NET debug window'. My problem is I don't know what that means, if it means the debug output window in Visual Studio (where you see build output, debug output and more) I am not seeing any UrlRewriter debug output. The rules are working (mostly) I just want to get more debug output to fix issues. I added the register call to the rewriter section like this: <rewriter> <register logger="Intelligencia.UrlRewriter.Logging.DebugLogger, Intelligencia.UrlRewriter" /> .... </rewriter> I am hosting this website locally in IIS on Vista, to debug it I attach the debugger to the w3wp process. Other selected parts from the web.config" <compilation debug="true"> <assemblies> ... </assemblies> </compilation> <trace enabled="true"/> Where should I see the debug output from UrlRewriter.NET? If it is in the Visual Studio debug output window, any ideas why I am not seeing it there?

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  • validation control unable to find its control to validate

    - by nat
    i have a repeater that is bound to a number of custom dataitems/types on the itemdatabound event for the repeater the code calls a renderedit function that depending on the custom datatype will render a custom control. it will also (if validation flag is set) render a validation control for the appropriate rendered edit control the edit control overrides the CreateChildControls() method for the custom control adding a number of literalControls thus protected override void CreateChildControls() { //other bits removed - but it is this 'hidden' control i am trying to validate this.Controls.Add(new LiteralControl(string.Format( "<input type=\"text\" name=\"{0}\" id=\"{0}\" value=\"{1}\" style=\"display:none;\" \">" , this.UniqueID , this.MediaId.ToString()) )); //some other bits removed } the validation control is rendered like this: where the passed in editcontrol is the control instance of which the above createchildcontrols is a method of.. public override Control RenderValidationControl(Control editControl) { Control ctrl = new PlaceHolder(); RequiredFieldValidator req = new RequiredFieldValidator(); req.ID = editControl.ClientID + "_validator"; req.ControlToValidate = editControl.UniqueID; req.Display = ValidatorDisplay.Dynamic; req.InitialValue = "0"; req.ErrorMessage = this.Caption + " cannot be blank"; ctrl.Controls.Add(req); return ctrl; } the problem is, altho the validation controls .ControlToValidate property is set to the uniqueid of the editcontrol. when i hit the page i get the following error: Unable to find control id 'FieldRepeater$ctl01$ctl00' referenced by the 'ControlToValidate' property of 'FieldRepeater_ctl01_ctl00_validator'. i have tried changing the literal in the createchildcontrols to a new TextBox(), and then set the id etc then, but i get a similar problem. can anyone enlighten me? is this because of the order the controls are rendered in? ie the validation control is written before the editcontrol? or... anyhow any help much appreciated thanks nat

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  • Why have or haven't you moved to ASP.NET MVC yet?

    - by Jason
    I find myself on the edge of trying out ASP.NET MVC but there is still "something" holding me back. Are you still waiting to try it, and if so, why? If you finally decided to use it, what helped you get over your hesitation? I'm not worried about it from a technical point of view; I know the pros and cons of web forms vs MVC. My concerns are more on the practical side. Will Microsoft continue to support ASP.NET MVC if they don't reach some critical threshold of developers/customers using it? Are customers willing to try ASP.NET MVC? Have you had to convince a customer to use it? How did that go? Are there major sites using ASP.NET MVC (besides SO)? Could you provide links if you have them? Did you try ASP.NET MVC and found yourself regretting it? If so, what do you regret? If you have any other concerns preventing you from using MVC.NET, what are they? If you had concerns but felt they were addressed and now use MVC.NET, could you list them as well? Thanks

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  • .NET and SMTP Configuration

    - by koevoeter
    Sometimes I feel stupid about discovering .NET features that have been there since an old release (2.0 in this case)... Apparently you can just use this configSecion “mailSettings” and never have to configure your SmtpClient instance in code again (no, not hard-coded): <system.net>     <mailSettings>         <smtp deliveryMethod="Network" from="My Display Name &lt;[email protected]&gt;">             <network host="mail.server.com" />         </smtp>     </mailSettings> </system.net> Now you can go all like: new SmtpClient().Send(mailMessage); …and everything is configured for you, even the from address (which you can obviously override).

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  • Deploy ASP.NET MVC 2 to IIS 7.5 targeting .NET 3.5

    - by Agent_9191
    I created an ASP.NET MVC 2 application in Visual Studio 2008. I set the release build to go through the ASP.NET compiler to precompile all the views, minify Javascript and CSS, clean up the web.config, etc. Since the production deployment is going to an IIS6 server, I set up my pseudo-production deployment on my Windows 7 machine to have the application pool run in classic mode targeting the 2.0 runtime. I set up the extensionless handler in the web.config that's necessary and everything worked great. The problem came when I upgraded the solution to Visual Studio 2010. I'm still targeting the 3.5 framework, but now I'm using MSBuild 4.0 since that's what Visual Studio 2010 uses. Everything still compiles correctly because it runs fine under Cassini, but when I deploy it to the same location (same application pool, identity, etc) it now behaves differently. I still have the extensionless handler in the web.config, but now when I navigate to the root of the application it does directory browsing, and any routes that it had previously handled now come back as 404 errors being handled by the StaticFile handler in IIS. I'm at a loss for what changed and is causing the break. I have looked at this question, but I have already verified that all the prerequisite components are installed.

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