unrecognized tag prefix or device filter Error in visual studio 2005

I'm trying to figure out how I can get around an error I get when multiple users are accessing different my site. I'm getting an error:

there is already an open datareader associated with this connection which must be closed first

It's not the same query everytime but I recently triggered it on this statement:

Dim adapterSavedState As New SQLDataAdapter("SELECT SavedStateContactView, SavedStatePropertyView, SavedStateTransView, SavedStateCompanyView FROM WebusersProfiles WHERE ContactID = '" & Session("ContactID") & "'", myConnection)
    Dim dtSavedState As New DataTable()
    adapterSavedState.Fill(dtSavedState)
         Dim rowSavedState As DataRow
         For Each rowSavedState In dtSavedState.Rows
             If Request.QueryString("View") = "Contact" Then
                SavedState = rowSavedState("SavedStateContactView").ToString()
            Else If Request.QueryString("View") = "Property" Then
                SavedState = rowSavedState("SavedStatePropertyView").ToString()
            Else If Request.QueryString("View") = "Trans" Then
                SavedState = rowSavedState("SavedStateTransView").ToString()
            Else If Request.QueryString("View") = "Company" Then
                SavedState = rowSavedState("SavedStateCompanyView").ToString()
            End If
         Next rowSavedState

I define my connection in my basepage

    Public Dim MyConnection As SqlConnection
    Public Shared Dim strSite As String = "dev"
        
    Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
        myConnection = New SqlConnection("server=xxxx;database=xxxxx;User ID=xxxxx;Password=xxxxx;")

Where is my issue and how can I overcome it? This is a .net 1.1 site so MARS I know is not available...

I'm doing an application which has already contains a master page named Master.master. And all related web forms(Webpage) are running well. But I create another master page in same application named Profile.master for some other web form(Webpage). But this time some of the related pages are running a blank page and some are generating an error that is:-

is not allowed here because it does not extend class 'System.Web.UI.Page'.

please help me to rectify this error.

Vishal Purohit

Hi All,

i have a program in vb.net..i use the webrequest to post the data to another page (http://localpost/posReceived.aspx), and use the webResponse to get the back the response from the remote page.

When i run this program, it returned error "The remote server returned an error: (403) Forbidden.". I have no idea on this. Coz my aspx page and posReceived.aspx are placed in the same server and same directory. I supposed it should be worked without any security concerns.

Can anyone help me to solve it. Thanks a lot!

Hi all, 

I tried to do a simple application using ajaxcontroltoolkit.  in the beggining I used a textbox with an autocomplete control and it was working.but when i wanted to use it in another application it didn't work. then I tried to create exactly  the first application  in another project I had the same problem.the autocomplete extender didn' work anymore. I think there is a problem of visual studio 2010 settings, since i have 2 projects with the same files, same code in the files but one of the project run corectly and the other not.

help please.

I have created a sample Web App. for creating dynamic controls. It worked fine when I originally created it, however after closing the solution and opening a couple days later this is what happens. Any ideas why?

Error Creating Control - ScriptManager1, Oject Reference not set to an instance of an object. 

Error Creating Control - Button1, Oject Reference not set to an instance of an object. 

Error Creating Control - UpdatePanel1, Oject Reference not set to an instance of an object.

<%@ Page Title="Home Page" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false"
    CodeBehind="Default.aspx.vb" Inherits="WebApplication5._Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>
 <asp:Button ID="Button1" runat="server" Text="Button" />
    <div style="text-align: center; float: left; width: 336px;">
        <div style="background-color: Aqua; ">
            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
                <br />
                <asp:PlaceHolder runat="server" id="myPlaceHolder" />
                <br />
            </ContentTemplate>
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="MyButton" EventName="Click" />
            </Triggers>

            </asp:UpdatePanel>
       </div>
   </div>

   <div style="text-align: center; float: left; width: 336px;">
        <asp:UpdatePanel ID="UpdatePanel2" runat="server">
        <ContentTemplate>
            <asp:Button ID="btnAddTextBox" runat="server" Text="Add Control" OnClick="btnAddTextBox_Click" Width="200" />
            <br /> <br />
            <asp:Button ID="RemoveTextBoxButton" runat="server" Text="Remove Control" OnClick="RemoveTextBoxButton_Click" Width="200" />
            <br /> <br />
            <asp:Button ID="MyButton" runat="server" Text="My Button" Width="200" />
            <br /> <br />
            <asp:Label runat="server" ID="MyLabel"></asp:Label>
        </ContentTemplate>
    </asp:UpdatePanel>
    
</div>

</asp:Content>

Hello,

I am facing this error 

Microsoft JScript runtime error: Sys.ArgumentException: Value must not be null for Controls and Behaviors.

Parameter name: element

while using Ajaxtoolkit ModelPopupextender with listview, actually I am retriving image from database to the listview in VS 2008. 

Can anyone please help me out of this..

 I am trying to populate dropdown using json. It calls the webservice method but its not returning any value and get a error code 500.

My code is as

function changeContextKey()
		{
		var servicePath = "http://localhost:3496/ccm/WsWebService.asmx";
		var methodName = "add";
		var useGet = false ;
		var xValue = $get("cboScenario").value;
//		var yValue = "Scenario:8";
//		var zValue = "";
		alert("xValue");
		var params = {x: xValue};
		var userContext = $get ("result");
		var webServiceProxy = new Sys.Net.WebServiceProxy ();
		webServiceProxy .set_timeout(0);
		request = webServiceProxy ._invoke(servicePath ,methodName ,useGet ,params ,onSuccess, onFailure, userContext );
		}
		function onSuccess(result, userContext, methodName)
		
		{
		userContext .innerHtML = "<b><u>" + result + "</b></u>"
		
		
		}
		
		function onFailure(result, userContext, methodName)
		{
		    alert('Ravi');
		
		}

and in webservice we are just calling a method which populate 
 [WebMethod ]
    public DataSet add(string x)
    {

//code for populating using x
return dataset;


     }

follows

 I am trying to call webservice method using JSON.

my code is as follows

<script src="jquery-1.3.2.min.js" type ="text/javascript" ></script>
    <script type ="text/javascript" >
    var pageUrl = '<%=ResolveUrl("~/CS.aspx")%>'
function PopulateContinents() {
    $("#<%=ddlCountries.ClientID%>").attr("disabled", "disabled");
    $("#<%=ddlCities.ClientID%>").attr("disabled", "disabled");
    if ($('#<%=ddlContinents.ClientID%>').val() == "0") {
        $('#<%=ddlCountries.ClientID %>').empty().append('<option selected="selected" value="0">Please select</option>');
        $('#<%=ddlCities.ClientID %>').empty().append('<option selected="selected" value="0">Please select</option>');
    }
    else {
        $('#<%=ddlCountries.ClientID %>').empty().append('<option selected="selected" value="0">Loading...</option>');
        $.ajax({
            type: "POST",
            url: "CS.aspx.cs/PopulateCountries",
            data: "()" ,
            contentType: "application/json; charset=utf-8",
            timeout: 10000,
            dataType: "json",
            success: OnCountriesPopulated,
            error: function(xhr) {if (!error) return;
                                    if (xhr.responseText)
                                    {var err = JSON2.parse(xhr.responseText);
                                                                if (err)error(err);
                                                                else error( { Message: "Unknown server error." })} return;},
            failure: function(response) {
                alert(response.d);
            }
        });
    }
}

But am getting error like this:

<html>
    <head>
        <title>This type of page is not served.</title>
        <style>
         body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;} 
         p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}
         b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}
         H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }
         H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }
         pre {font-family:"Lucida Console";font-size: .9em}
         .marker {font-weight: bold; color: black;text-decoration: none;}
         .version {color: gray;}
         .error {margin-bottom: 10px;}
         .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }
        </style>
    </head>

    <body bgcolor="white">

            <span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>

            <h2> <i>This type of page is not served.</i> </h2></span>

            <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">

            <b> Description: </b>The type of page you have requested is not served because it has been explicitly forbidden.     Please review the URL below and make sure that it is spelled correctly.
            <br><br>

            <b> Requested URL: </b>/CS.aspx.cs/PopulateCountries<br><br>

            <hr width=100% size=1 color=silver>

            <b>Version Information:</b> Microsoft .NET Framework Version:2.0.50727.1882; ASP.NET Version:2.0.50727.1887

            </font>

    </body>
</html>
<!-- 
[HttpException]: Path '/CS.aspx.cs/PopulateCountries' is forbidden.
   at System.Web.HttpForbiddenHandler.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
-->

how to overcome this problem?

I have got this script from http://flowplayer.org/tools/demos/overlay/modal-dialog.html and using this overlay to display errors in my application. But when i call this script from code behind I get "Operation Aborted" in IE although it works perfectly in FireFox. Here is the code

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="throw.aspx.cs" Inherits="ElectronicBillPayment._throw" %>

<!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></title>
<!-- include the Tools -->
	<script src="http://cdn.jquerytools.org/1.2.5/full/jquery.tools.min.js"></script>
	
	<style>
	
	.modal {
		background-color:#fff;
		display:none;
		width:350px;
		padding:15px;
		text-align:left;
		border:2px solid #333;
	
		opacity:0.8;
		-moz-border-radius:6px;
		-webkit-border-radius:6px;
		-moz-box-shadow: 0 0 50px #fff;
		-webkit-box-shadow: 0 0 50px #ccc;
	}
	
	.modal h2 {
		background:url(/img/global/info.png) 0 50% no-repeat;
		margin:0px;
		padding:10px 0 10px 45px;
		border-bottom:1px solid #333;
		font-size:20px;
	}
	</style>
        
  
</head>

<body >
<div class="modal" id="yesno">
	<h2>This is a modal dialog</h2>

	<p>
		You can only interact with elements that are inside this dialog.
		To close it click a button or use the ESC key.
	</p>

	<!-- yes/no buttons -->
	<p>
		<button class="close"> Yes </button>
		<button class="close"> No </button>
	</p>
</div>


<form name="form1" id="form1" runat="server">
<asp:Button ID="Button1" runat="server" Text="Button" 
    onclick="Button1_Click1" />
</form>

      <script type="text/javascript">
          function triggeroverlay() {
              $("#yesno").overlay({
                  // some mask tweaks suitable for modal dialogs
                  mask: {
                      color: '#a2a2a2',
                      loadSpeed: 200,
                      opacity: 0.9
                  },
                  api: true
              }).load();
          }
        </script>
        
<script type ="text/javascript">
    // What is $(document).ready ? See: http://flowplayer.org/tools/documentation/basics.html#document_ready
    $(document).ready(function() {

        var triggers = $(".modalInput").overlay({

            // some mask tweaks suitable for modal dialogs
            mask: {
                color: '#808000',
                loadSpeed: 200,
                opacity: 0.9
            },

            closeOnClick: false
        });


        var buttons = $("#yesno button").click(function(e) {

            // get user input
            var yes = buttons.index(this) === 0;

            // do something with the answer
            triggers.eq(0).html("You clicked " + (yes ? "yes" : "no"));
        });


        $("#prompt form").submit(function(e) {

            // close the overlay
            triggers.eq(1).overlay().close();

            // get user input
            var input = $("input", this).val();

            // do something with the answer
            triggers.eq(1).html(input);

            // do not submit the form
            return e.preventDefault();
        });

    });
</script>

</body>


</html>

Here is the Code behind where i am calling "triggeroverlay" javascript function to display error to the user.

    public partial class _throw : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
          

        }

        protected void Button1_Click1(object sender, EventArgs e)
        {
         ClientScript.RegisterStartupScript(this.GetType(), "throwError", "<script>triggeroverlay();</script>");
        }
    }
}

I was reading this article about the same thing but didn't get it properly. Please help and give example where i am wrong and how to make it work.

http://weblogs.asp.net/infinitiesloop/archive/2006/11/02/Dealing-with-IE-_2600_quot_3B00_Operation-Aborted_2600_quot_3B002E00_-Or_2C00_-how-to-Crash-IE.aspx

Hi,

I am developing asp.net 2.0 using c# and when I place a break point on a line of code and hit f5 or "start debugging" it just brings up the website without stopping at the breakpoint.

 It is set for debug not release and I don't know what else to do? Does anyone have any suggestions?

Thanks