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  • Object reference not set to an instance of an object.....?

    - by jamal
    Hi guys I always got this error from my site and it keeps bugging me.I've been trying to figure out the cause of this error but I can't really figure it out. Here's the stacktrace: at BasePage.Page_PreInit(Object sender, EventArgs e) at System.EventHandler.Invoke(Object sender, EventArgs e) at System.Web.UI.Page.OnPreInit(EventArgs e) at System.Web.UI.Page.PerformPreInit() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) And on my basepage I only got this code: Imports Microsoft.VisualBasic Public Class BasePage Inherits System.Web.UI.Page Private Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreInit Page.Theme = "Something" If (Request.UserAgent.IndexOf("AppleWebKit") 0) Then Request.Browser.Adapters.Clear() End If End Sub Private Sub Page_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreRender If Me.Title = "Untitled Page" Then Throw New Exception("Page title cannot be ""Untitled Page"".") End If End Sub End Class According to the stacktrace this always happens on my basepage preinit event.What do you think is the problem here guys?

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  • WebClient.DownloadString() Not Producing Exact HTML

    - by Ryan Fuentes
    So here's the deal. I'm creating a spider bot for a website that scans all the product pages and records the product data. I'm using C# and the WebClient library to download the HTML string. The site I'm crawling must be specially made because the HTML that is received from WebClient.DownloadString() is different than the HTML that I get when I view the source of the HTML when visiting it on a browser. This seems intentional because the only info I can't get is the price. Does anyone know a workaround for this problem or can anyone explain what is happening? Thanks.

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  • Access varialbe from code behind via jQery

    - by Morron
    Hi, I have the following code that I want to return to a variable "t" in jQery: Code behind: Public Shared Function GetSomeText() As String Dim result = "This is from code behind" Return result End Function Caller variable in jQuery: //This is not working like that, I think var t = GetSomeText(); So, how can I make variable "t" get the "result" from Function GetSomeText from code-behind? Thank you.

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  • Clearing Session in Global Application_Error

    - by Zarigani
    Whenever an unhandled exception occurs on our site, I want to: Send a notification email Clear the user's session Send the user to a error page ("Sorry, a problem occurred...") The first and last I've had working for a long time but the second is causing me some issues. My Global.asax.vb includes: Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs) ' Send exception report Dim ex As System.Exception = Nothing If HttpContext.Current IsNot Nothing AndAlso HttpContext.Current.Server IsNot Nothing Then ex = HttpContext.Current.Server.GetLastError End If Dim eh As New ErrorHandling(ex) eh.SendError() ' Clear session If HttpContext.Current IsNot Nothing AndAlso HttpContext.Current.Session IsNot Nothing Then HttpContext.Current.Session.Clear() End If ' User will now be sent to the 500 error page (by the CustomError setting in web.config) End Sub When I run a debug, I can see the session being cleared, but then on the next page the session is back again! I eventually found a reference that suggests that changes to session will not be saved unless Server.ClearError is called. Unfortunately, if I add this (just below the line that sets "ex") then the CustomErrors redirect doesn't seem to kick in and I'm left with a blank page? Is there a way around this?

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  • Amazon EC2 multiple servers share session state

    - by Theofanis Pantelides
    Hi everyone, I have a bunch of EC2 servers that are load balanced. Some of the servers are not sharing session, and users keep getting logged in and out. How can I make all the server share the one session, possibly even using a partitionresolver solution public class PartitionResolver : System.Web.IPartitionResolver { private String[] partitions; public void Initialize() { // create the partition connection string table // web1, web2 partitions = new String[] { "192.168.1.1" }; } public String ResolvePartition(Object key) { String oHost = System.Web.HttpContext.Current.Request.Url.Host.ToLower().Trim(); if (oHost.StartsWith("10.0.0") || oHost.Equals("localhost")) return "tcpip=127.0.0.1:42424"; String sid = (String)key; // hash the incoming session ID into // one of the available partitions Int32 partitionID = Math.Abs(sid.GetHashCode()) % partitions.Length; return ("tcpip=" + partitions[partitionID] + ":42424"); } } -theo

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  • How to Read from LocalResources in class Global area

    - by Nasser Hajloo
    I have a class name xxxx and a resource whichthe class read from it to set some string. Everything is fine and nothing goes wrong. The problem is that I have some Constant Global String which I set them in global area like public partial class ExampleDocument : ClassBase { const string TheProblem = "I can not read this string from resources cause here Methods do not work"; #region Method ... #endregion } The question is, How to read this strings frrom Rersource File.

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  • IEnumerable not null but calling Count() results in Exception

    - by Draak
    I have code that's working beautifully on my development machine, but when deployed to the server is throwing null reference exception. So, I can't step through the code, but I've pinned down the culprit. But now I am puzzled. Here's the code. The question is below. Dim certs = From p In persons _ Select New Certificate( _ p.Value, _ New CertificateData.Seminar(thisEvent.Seminar.Name, _ thisEvent.StartDate.Value, _ thisEvent.EndDate.Value, _ thisEvent.Venue.City, _ thisEvent.Venue.State, _ New CertificateData.Instructor( _ staffMember.Name, _ staffMember.Titles, _ instrSignatPath))) _ With {.CertificateId = p.Key} lblMessage.Text = CStr(certs Is Nothing) lblMessage.Text = lblMessage.Text + "<br />" + CStr(certs.Count()) In the code above persons is a dictionary of custom class, and certs is of IEnumerable type. Now here's the quandary.. The first line that sets the label returns False, so certs is not null. But the second line throws an null reference exception. How is this possible?

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  • Updating my database

    - by Malcolm
    I am new with the subsonic, and I have a problem when trying to update the database from the sql server. I have created a gridview by still is not returning the updates results. can you please help me? its getting an error code on dc.AddMostaHse(); (Cannot implicity convert type 'void to 'object') Here is the code being done of DataAccess.cs page public void AddMostaHse() { Mosta.MostaHSE1 xx = new MostaHSE1(); xx.ID = 94; xx.FunctionLocation = "lza94"; xx.acno = 12; xx.Save(); } Binding it with the gridview. { DataAccess dc = new DataAccess(); gvtest.DataSource = dc.AddMostaHse(); gvtest.DataBind(); }

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  • Active Directoy LDAP - Lock User Account

    - by Germ
    What is the prefered way to lock an Active Directory account? int val = (int)directoryentry.Properties["userAccountControl"].Value; directoryentry.Properties["userAccountControl"].Value = val | 0x0010; vs. directoryentry.InvokeSet("IsAccountLocked", true); Is there a better way?

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  • I cannot make log4net work in my web application :(

    - by vtortola
    Hi, I'm trying to set up log4net but I cannot make it work. I've put this in my Web.config: <configSections> <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /> <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender"> <file value="logfile.log" /> <appendToFile value="true" /> <rollingStyle value="Composite" /> <maxSizeRollBackups value="14" /> <maximumFileSize value="15000KB" /> <datePattern value="yyyyMMdd" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" /> </layout> </appender> <root> <level value="DEBUG" /> <appender-ref ref="RollingFileAppender" /> <appender-ref ref="TraceAppender" /> </root> (StackOverflow is not rendering correctly the code I've pasted, I don't know why) Then, in my code I execute: log4net.Config.XmlConfigurator.Configure(new FileInfo(HttpContext.Current.Server.MapPath("~/Web.config"))); ILog log = LogManager.GetLogger("MainLogger"); if(log.IsDebugEnabled) log.Debug("lalala"); But nothing happen. I check the "log" variable, and contains an LogImpl object, that has all the logging levels enabled. I get no error or configuration warning, I cannot see any file in the root, in the bin or anywhere. What do I have to do to make it work? Cheers.

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  • Password protect web service

    - by Henrik
    Hi! Is it possible to require user name and password for a web service without changing the code for existing web service? Adding a DLL and configuration would be OK, but I rather not change the web service.

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  • "Cannot use fixed local inside lambda expression"

    - by JulianR
    I have an XNA 3.0 project that compiled just fine in VS2008, but that gives compile errors in VS2010 (with XNA 4.0 CTP). The error: Cannot use fixed local 'depthPtr' inside an anonymous method, lambda expression, or query expression depthPtr is a fixed float* into an array, that is used inside a Parallel.For lambda expression from System.Threading. As I said, this compiled and ran just fine on VS2008, but it does not on VS2010, even when targeting .NET 3.5. Has this changed in .NET 4.0, and even so, shouldn't it still compile when I choose .NET 3.5 as the target framework? Searching for the term "Cannot use fixed local" yields exactly one (useless) result, both in Google and Bing. If this has changed, what is the reason for this? I can imagine capturing a fixed pointer-type in a closure could get a bit weird, is that why? So I'm guessing this is bad practice? And before anyone asks: no, the use of pointers is not absolutely critical here. I would still like to know though :)

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  • Was Visual Studio 2008 or 2010 written to use multi cores?

    - by Erx_VB.NExT.Coder
    basically i want to know if the visual studio IDE and/or compiler in 2010 was written to make use of a multi core environment (i understand we can target multi core environments in 08 and 10, but that is not my question). i am trying to decide on if i should get a higher clock dual core or a lower clock quad core, as i want to try and figure out which processor will give me the absolute best possible experience with Visual Studio 2010 (ide and background compiler). if they are running the most important section (background compiler and other ide tasks) in one core, then the core will get cut off quicker if running a quad core, esp if background compiler is the heaviest task, i would imagine this would b e difficult to seperate in more then one process, so even if it uses multi cores you might still be better off with going for a higher clock cpu if the majority of the processing is still bound to occur in one core (ie the most significant part of the VS environment). i am a vb programmer, they've made great performance improvements in beta 2, congrats, but i would love to be able to use VS seamlessly... anyone have any ideas? thanks, erx

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  • Redirect in Application_Error redundant if using customErrors?

    - by Ek0nomik
    If I have a customErrors section in my Web.config that says to redirect to Error.html, then putting code in the Application_Error method in the Global.asax to redirect to Error.html is redundant is it not? Technically, I could bypass the Web.config by redirecting to a different page in the Application_Error method if I wanted to, but since I don't want to go to a separate page I don't think I need the code.

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  • Application security issues to consider

    - by user279521
    I am working on the design of a high security application (involving financial information, personal information etc). I need to identify what security measures (application level) will be implemented. The application will involve sending data to and from a database, user login, import export to csv, txt files, and print function. What security features do I need to consider for such an application. (SQL injection for starters) ?

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  • Is it weird or strange to make multiple WCF Calls to build a ViewModel before presenting it?

    - by Nate Bross
    Am I doing something wrong if I need code like this in a Controller? Should I be doing something differently? public ActionResult Details(int id) { var svc = new ServiceClient(); var model = new MyViewModel(); model.ObjectA = svc.GetObjectA(id); model.ObjectB = svc.GetObjectB(id); model.ObjectC = svc.GetObjectC(id); return View(model); } The reason I ask, is because I've got Linq-To-Sql on the back end and a WCF Service which exposes functionality through a set of DTOs which are NOT the Linq-To-Sql generated classes and thus do not have the parent/child properties; but in the detail view, I would like to see some of the parent/child data.

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  • whatz wrong in this SELECt query of MSSQL... ?

    - by user522211
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Dim SQLData As New System.Data.SqlClient.SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True") Dim cmdSelect As New System.Data.SqlClient.SqlCommand("SELECT * FROM Table1 WHERE Date =" & TextBox1.Text & "'", SQLData) SQLData.Open() Dim dtrReader As System.Data.SqlClient.SqlDataReader = cmdSelect.ExecuteReader() While dtrReader.Read() For j As Integer = 1 To 31 Dim s As String = "s" & j If dtrReader(s.ToString()).ToString() = "b" Then Dim img As ImageButton = DirectCast(Panel1.FindControl(s.ToString()), ImageButton) img.ImageUrl = "~/Images/booked.gif" img.Enabled = False End If Next End While dtrReader.Close() SQLData.Close() End Sub SHOWS AN ERROR : Unclosed quotation mark after the character string ''.

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  • Method not found: 'Void Google.Apis.Util.Store.FileDataStore..ctor(System.String)'

    - by user3732193
    I've been stuck at this for days now. I copied the exact codes from google api samples to upload files to Google Drive. Here is the code UserCredential credential = GoogleWebAuthorizationBroker.AuthorizeAsync( new ClientSecrets { ClientId = ClientId, ClientSecret = ClientSecret, }, new[] { DriveService.Scope.Drive, DriveService.Scope.DriveFile }, "user", CancellationToken.None, new FileDataStore("MyStore")).Result; But it would throw an exception at runtime: Method not found: 'Void Google.Apis.Util.Store.FileDataStore..ctor(System.String)'. I already added the necessary Google Api dlls. Or if anyone could suggest a better code for uploading files to Google Drive in a website which implements Server-Side Authorization. Any help would be greatly appreciated. UPDATE: I changed my code to this var token = new TokenResponse { RefreshToken = "1/6hnki1x0xOMU4tr5YXNsLgutzbTcRK1M-QOTEuRVxL4" }; var credentials = new UserCredential(new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer { ClientSecrets = new ClientSecrets { ClientId = ClientId, ClientSecret = ClientSecret }, Scopes = new[] { DriveService.Scope.Drive, DriveService.Scope.DriveFile } }), "user", token); But it also throws an exception: Method not found: 'Void Google.Apis.Auth.OAuth2.Flows.GoogleAuthorizationCodeFlow..ctor(Initializer). Is the problem with the dlls?

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  • 398 row datalist slowing down modal open????

    - by Jreeter
    Hey guys I got a weird issue.. I have a datalist that's only loaded on pageload it contains 2 columns a name and date and has 398 rows.. In IE 7 and above(and prob previous version) when I open a modal via a button click it takes almost 5 seconds to open. HOWEVER, if I do not bind this datalist it's MUCH faster.. Also this is only happening in IE, Chrome, Firefox and opera both open the modal instantly with the datalist binded... Josh

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