Getting The Error "Unable To Validate Data" On ASP.NET 3.5 Website?
Mar 23, 2010
I am getting the error "Unable to validate Data" on my ASP.NET 3.5 website. Replication Steps:Open the Default.aspx web page (it just has a few asp.net controls) and leave it idle for approx 1hr.Click on a button (server side standard asp.net button) on the page and we get the error.After going through a couple of blogs, I've got the following suggestionsSome suggested the use of specifying the machine key. But is that really required considering that my website is hosted on a single application server (no web farm scenario). Not sure if I should be trying this.
I'm trying to php/curl scrape data from an .NET site (those with __VIEWSTATE, __EVENTVALIDATION). I monitor headers and post vars using Tamper Data so I'm pretty sure I haven't missed anything. My approach is to micmic the post back when the user click on one of the links and parse the response. But the response I'm getting is a page redirect to "Unable to validate data".
I am getting " Unable to validate data" error alert from my web application.hich is developed with asp.net/c#but i didnt reproduced that error from my end. How can i fixed that error?Error Desciption : User Agent: Nokia7230/5.0 (06.90) Profile/MIDP-2.1 Configuration/CLDC-1.1 Mozilla/5.0 AppleWebKit/420+ (KHTML, like Gecko) Safari/420+User IP: 27.60.200.101
Server Error in '/'Application. Unable to validate data. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: Unable to validate data.Source Error
I'm getting "Unable to validate data" in a webfarm scenario but not all the time. I'm getting it about on AVERAGE 1x or 2x per hour but fairly random. All of the causes of this error that I know of are list below:achinekey in the machine.config (or web.config) not set the same in a web farm scenario. Mine are set the same in the machine.config.A page is submitted after a server recycle and the machinekey is set to auto. I'm using a static key which should
I've got the problem with a simple e-mail form, it uses the simple.aspx and ASPEMAILLib.dll from the persits aspemail installation.The application is hosted on IIS 7, the application pool is a .NET 1.1. I followed the guide on http://blogs.iis.net/bills/archive/2008/06/02/installing-asp-net-1-1-with-iis7-on-vista-and-windows-2008.aspx
I have several websites which get approximately 3000 pageviews in total per day, and I get this viewstate error roughly 5-10 times per day, caught in global.asax:
System.Web.HttpException: Unable to validate data. at System.Web.Configuration.MachineKeySection.GetDecodedData(Byte[] buf, Byte[] modifier, Int32 start, Int32 length, Int32& dataLength) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString
I'm trying to validate that a GridView logated in one of the steps of the Wizard Control is populated by the user before the Next button is clicked. What I mean is that I need to block Next (or Prev) button until the user populates a gridview, once the gridview has at least one element then enable the (Next/Prev) buttons. How can I enable/disable Next/Prev buttons within a specific step?.
On my website, I only want to allow users that are registerd real estate agents to be able to create an account.Is there a way to have the user registration process something like:1. User puts their "License"on my website Registration page and have them click a "next" button2. There would be a way to have the license validated on the following site: http://www2.dre.ca.gov/publicasp/pplinfo.asp3. If it is a valid license, the user is presented with the next step in the CreateUserWizard form.
i develop a site that is working fine on my system. but when i publish this the data is not saving into the database. my database in in app_data folder. what is the problem.
I get this error when I try to publish a asp.net 4.0 application on my server. I am using entity framework and mysql as the database. Unable to find the requested .Net Framework Data Provider. It may not be installed.
[ArgumentException: Unable to find the requested .Net Framework Data Provider. It may not be installed.] System.Data.EntityClient.EntityConnection.GetFactory(String providerString) +251 [ArgumentException: The specified store provider cannot be found in the configuration, or is not valid.] System.Data.EntityClient.EntityConnection.GetFactory(String providerString) +10983191 System.Data.EntityClient.EntityConnection.ChangeConnectionString(String newConnectionString) +641 System.Data.Objects.ObjectContext.CreateEntityConnection(String connectionString) +67 Satelite.Dados.sateliteEntities..ctor() in E:Sites_dotNet4.0satelite runkSistemaDadosSatelite.Designer.cs:64 [TargetInvocationException: Exception has been thrown by the target of an invocation.] System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0 System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache) +117 System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache) +247 System.Activator.CreateInstance(Type type, Boolean nonPublic) +106 System.Web.DynamicData.<>c__DisplayClass2.<RegisterContext>b__1() +15 System.Web.DynamicData.MetaModel.RegisterContext(Func`1 contextFactory, ContextConfiguration configuration) +483 Satelite.Global.RegisterRoutes(RouteCollection routes) in E:Sites_dotNet4.0satelite runkSistemaSateliteGlobal.asax.cs:35 [HttpException (0x80004005): Exception has been thrown by the target of an invocation.] System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +3988565 System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +191 System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +325 System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +407 System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +375 [HttpException (0x80004005): Exception has been thrown by the target of an invocation.] System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +11529072 System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +4784373
I am trying to update the database with the edited data. However, it did not manage to read the edited data from the textbox. It returned the retrieve data that I have done in the Page_Load instead. Is there any part of the code that I have written wrongly? I did manage not to use <EditItemTemplate> in my past project and manage to update the database with the same logic.
<aspx> <!-- This DataList is created to view Personal Information --> <asp:DataList ID="personal_dl" runat="server"> <ItemTemplate> <table> <tr> <td style="width: 100px; text-align: left;"> <asp:Label ID="first_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="First:"></asp:Label></td> <td style="width: 350px"> <asp:TextBox ID="first_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("FIRST") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left"> <asp:Label ID="name_lbl" runat="server" Font-Size="11px" ForeColor="Black" Text="Name:"></asp:Label> </td> <td style="width: 350px"> <asp:TextBox ID="name_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("NAME") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left;"> <asp:Label ID="id_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="ID:"> </asp:Label> </td> <td style="width: 350px"> <asp:TextBox ID="id_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("ID") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left;"> <asp:Label ID="contact_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="Contact No.:"> </asp:Label> </td> <td style="width: 350px"> <asp:TextBox ID="contact_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("TELEPHONE_HP") %>'> </asp:TextBox> </td> </tr> <tr> <td style="width: 100px; text-align: left;"> <asp:Label ID="add_lbl" runat="server" ForeColor="Black" Font-Size="11px" Text="Address:"> </asp:Label> </td> <td style="width: 350px"> <asp:TextBox ID="add_tb" runat="server" Width="341px" Font-Size="11px" Text='<%# Eval("ADDRESS") %>'> </asp:TextBox> </td> </tr> </table> </ItemTemplate> </asp:DataList> <br /> <div style="text-align: center; color: Red; width: 460px;"> <asp:Label ID="errorMsg_lbl" runat="server" /> <asp:Button ID="edit_btn" runat="server" Text="Update" /> <asp:Button ID="createBtn" runat="server" Text="Insert" /></div> <aspx.vb> Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load 'display information in datalist Dim login As String = Session("login") Dim id As String = Session("id") bindDataList(personal_dl, getPersonalContent(login, id)) 'display necessary DataList personal_dl.Visible = True 'declare fields Dim i As Integer Dim first_tb, name_tb, id_tb, contact_tb, add_tb As New TextBox For i = 0 To personal_dl.Items.Count - 1 first_tb = personal_dl.Items(i).FindControl("first_tb") name_tb = personal_dl.Items(i).FindControl("name_tb") id_tb = personal_dl.Items(i).FindControl("id_tb") contact_tb = personal_dl.Items(i).FindControl("contact_tb") add_tb = personal_dl.Items(i).FindControl("add_tb") 'set fields as ReadOnly - cannot edit first_tb.ReadOnly = False name_tb.ReadOnly = False id_tb.ReadOnly = False contact_tb.ReadOnly = False add_tb.ReadOnly = False Next End Sub
Protected Sub edit_btn_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles edit_btn.Click 'declare fields Dim i As Integer Dim first_tb, name_tb, id_tb, contact_tb, add_tb As New TextBox Dim id As String = Session("id") For i = 0 To personal_dl.Items.Count - 1 first_tb = personal_dl.Items(i).FindControl("first_tb") name_tb = personal_dl.Items(i).FindControl("name_tb") id_tb = personal_dl.Items(i).FindControl("id_tb") contact_tb = personal_dl.Items(i).FindControl("contact_tb") add_tb = personal_dl.Items(i).FindControl("add_tb") Next Dim myConnection As OleDbConnection = dbConnection() Dim cmd As New OleDbCommand Dim sqlStatement As String Dim condition As String condition = "UPDATE staff " + _ "SET ((FIRST= @FIRST), (NAME = @NAME), (ID= @ID), (TELEPHONE_NO = @CONTACT_NO), (ADDRESS = @ADDRESS)) " + _ "WHERE (ID= @id)" sqlStatement = condition cmd.CommandText = sqlStatement cmd.CommandType = CommandType.Text cmd.Parameters.AddWithValue("@FIRST", first_tb) cmd.Parameters.AddWithValue("@NAME", name_tb) cmd.Parameters.AddWithValue("@ID", id_tb) cmd.Parameters.AddWithValue("@TELEPHONE_NO", contact_tb) cmd.Parameters.AddWithValue("@ADDRESS", add_tb) cmd.Parameters.AddWithValue("@ID", id) cmd.Connection = myConnection Try myConnection.Open() cmd.ExecuteNonQuery() Catch ex As Exception Finally If myConnection.State = ConnectionState.Open Then myConnection.Close() End If End Try 'display information in datalist Dim login As String = Session("login") bindDataList(personal_dl, getPersonalContent(login, id)) End Sub
using (MailMessage mm = new MailMessage("soporte@linknred.com", correo1.Text.Trim())) { mm.Subject = "Activacion de Cuenta"; string body = "Hola " + correo1.Text.Trim() + ", " + "Bienvenido a LinknRed"; body += "<br /><br />Por Favor haz Click en el Enlace Siguiente Para Activar Tu Cuenta";
I am using an Visual studio 2010 ultimate edition. And here i have getting an error " unable to connect to the asp.net development server " while i try to run the Web Application by pressing F5 key from Web Application Project. Can any tell me whats the problem and how can i resolve it.
I am trying to handle errorPlacement JQuery Validate plugin in ASP.NET MVC 3 Project with Unobtrusive validation provided by Microsoft. I am never able to hit the errorPlacement function and I am not sure what am I doing wrong. I am providing the code for Model/View/Controller below. Please let me know what am I doing wrong? View
When I run the website locally using my VS, everything works.
I am calling a function inside a dll using P/Invoke. DLL is in C++ and it works.
When I deploy the website on IIS, I get the error message Unable to load DLL 'SolvingProbelm.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
The dll resides inside the bin folder. App pool is Classic and .net 2.0
I am building an ASP.NET 3.5 application in which I have a page which loads another page in a different domain in an iframe. Below is the for Default.aspx page:
Unable to add 'App_Data/Database.mdf' to the Web site. Could not find a web server at 'Mysite.com' on port 21. check to make sure that the web server name is valid and your proxy settings are set correctly. If you are sure that everything is correct, the web server may be temporarily out of service.
I have publishing my website at least 1 a week for a year and latelly i am getting this error.When i check the web server everything fines.
I' ve been experiencing some serious problems with running my website.Everytime I click on the little green arrow to start debugging my website I get an error message in my browser.This problem occurs in every browser I use. Internet Explorer, Firefox, Google Chrome.I figured it had something to do with my internet settings, but they are exactly the same as the internet settings of a pc on which my website does run.Event installing Google Chrome without importing the settings from my primary browser (Firefox) has the same result.
The errors are:
Firefox: "The connection with the server was reinitialised during page load" Internet Explorer: "The page cannot be displayed" Chrome: "The page is unavailable. The page on http://localhost:PORTNUMBER/EventCompanion/Taak/Test/TestTaakEdit.aspx is probably disable temporarily or it has been permanently move to a new address."Even clicking with the right mouse button on an aspx page and selecting the "View in browser" option has the same result.The only thing that works is viewing the website in the internal browser provided by Visual Studio 2008.But that way I'm unable to debug, which is pretty enoying.
Running the website on an other pc works perfectly...
