dotnet-framework-aspnet >>The request failed with HTTP status 502: Bad Gateway

The request failed with HTTP status 502: Bad Gateway

Index ‹ dotnet-framework-aspnet

Previous
- 1
  - Sub - what is the parameter typeI have the sub that is checking if value from the datareader is null. I
    would like to pass textbox.text or dropdownbox.selectedvalue as first
    parameter and value from data reader as a second parameter.
    I cannot figure out what type is first parameter. (I am using ASP since
    2 weeks and I don't know where to look for this kind of information)
    
    Below is my sub. I would like to pass textbox.text(or
    checkbox.selectedvalue) as objectname and datareader(data) as value.
    
    Private Sub Check_Null(ByVal objectname As System.Object, ByVal value As
    Object)
    If IsDBNull(value) Then
    objectname = ""
    Else
    objectname = value
    Status.Text = objectname
    End If
    
    End Sub
    
    Thank you
    Arek
    
    *** Sent via Developersdex http://www.developersdex.com ***
    Don't just participate in USENET...get rewarded for it!
- 1
  - Picture Portfollio (asp.net 2.0 using vb.net)Hello,
    
    I was asked to build an internal site to show pictures of events that we
    have had. What I was thinking about doing is loading the files in a
    directory and then pulling the names in the directory into a gridview or
    repeater control. My question is how woud I go about getting the names of
    the files into an array. And how can I show the pictures going across the
    multiple columns instead of just one column?
    --
    Thanks in advance,
    sck10
- 1
  - How to do screen scraping where the site requires a log inHello,
    
    I would like to pull some information off a site that requires a log in.
    I have a subscription to a premium content site, and I would like to be
    able to do a few automatic requests instead of having to load the site
    manually in a browser.
    
    I have seen plenty articles that explain how to do screen scraping in
    .NET, others that describe how to do it via a POST, but I couldn't find
    any that covered my scenario.
    
    Basically the problem is that the code would first have to call the home
    page, then fill in the log in entries and post the page back. Then, the
    code would need to hang on to the cookie (which is what I assume they
    are using) so that when it does another request (GET would be fine
    here), the site will allow the request and not think the requester is
    not logged in.
    
    This all works fine in a browser, as the browser handles the cookie for
    you, but the code examples I have seen seem to use completely stateless
    requests (ie no cookies preserved), so it wouldn't work for a site like
    this.
    
    Any ideas? TIA
    
    --
    Alan Silver
    (anything added below this line is nothing to do with me)
- 1
  - Need to create Eventhandler for control created at runtimeHi,
    
    At what point in the page lifecycle are you adding these controls? Are they
    part of a control which is databound or are they part of a control which
    responds to a postback?
    
    --
    Ben
    http://bitarray.co.uk/ben
    
    "Jeff" <email***@***.com> wrote in message
    news:email***@***.com...
    >I have created an array of buttons at run time and need to associate them
    > with a
    > click event. Below I have included the code used to create the controls at
    > run time and hook up the button with the event:
    >
    > //create array of Update buttons
    > intLeft=16;
    > intTop=600;
    > for(intElement1=0;intElement1<datResults.Tables[0].Rows.Count;intElement1++)
    > {
    > btnUpdate[intElement1]=new Button();
    > btnUpdate[intElement1].Style["Position"]="Absolute";
    > btnUpdate[intElement1].Style["Top"]=System.Convert.ToString(intTop) +
    > "px";
    > btnUpdate[intElement1].Style["Left"]=System.Convert.ToString(intLeft) +
    > "px";
    > btnUpdate[intElement1].Text="Update";
    > btnUpdate[intElement1].Height=21;
    > btnUpdate[intElement1].Width=60;
    > btnUpdate[intElement1].Click+=new System.EventHandler(this.UpdateClick);
    > this.FindControl("WebForm1").Controls.Add(btnUpdate[intElement1]);
    > btnUpdate[intElement1].Visible=true;
    > intTop+=106;
    > }
    >
    > I have added the following routine as the event:
    >
    > public void UpdateClick(Object sender, EventArgs e)
    > {
    > lblError.Visible=true;
    > lblError.Text="It worked";
    > }
    >
    > The code in the click routine does not run when the button is clicked. Can
    > anyone tell me what I am missing? Thanks in advance.
    >
    > Regards,
    > Jeff
- 2
  - network (drive) access/impersonate identity problemI am experiencing difficulty access a mapped network drive in an ASP.NET
    application.
    
    While using the .Net framework v 1.1 implementation of
    System.IO.Directory.Exists(), it fails to recognize a mapped network drive.
    
    This is true if the path specified uses a mapped drive letter or is
    expressed as a UNC address. I have also tried the drive letter and UNC
    paths with and without trailing backslashes, respectively.
    
    No luck with ASP.NET, but it does work when I create a simple C# console
    test harness application. This indicates to me to be a security concern with
    ASP.NET. Funny thing is - no exception is returned. For all combinations,
    System.IO.Directory.Exists returns false. (If so, this behavior is very
    inconsistent with the System.Security thrown for things like trying to write
    to a file, execute code on another machine, etc.)
    
    The following knowledge base article:
    307901: INFO: Permissions to Connect to a Remote Access Database from
    ASP.NET
    http://support.microsoft.com/default.aspx?scid=kb;en-us;307901&Product=aspnet
    
    recommends using impersonation, but an error occurs even before the 1st line
    of my ASP.NET code is executed.
    No windows event is logged either.
    
    How do I get the ASP.NET worker process to recognize another machine's hard
    drive, folders and files?
    
    Any help is appreciated. Thanks!
    
    --
    Peter O'Reilly
- 5
  - splitting field by commaDim SomeString As String = Replace(SomeOtherString, ",", VbCrLf)
    
    --
    HTH,
    Kevin Spencer
    .Net Developer
    Microsoft MVP
    Big things are made up
    of lots of little things.
    
    "Paola" <email***@***.com> wrote in message
    news:email***@***.com...
    > I have a field that I would like to split by commas. Does anyone know how
    I can do this either by t-sql or vb? The ideal is for the detail.aspx page
    to line break on each comma in the field. Please help!
    >
    > Paola
- 6
  - Webservice serve multiple request at same time ??having a webservice X in seperate server and two application A & B on
    each seperate server, where application A and B access the same method
    from webservice X
    
    wheather webservice provide service for both application at same time
    or it will service for application A first(After completion) Then
    application b .
    
    Can any one explain me
    
    Regards
    Prakash
- 6
  - How/Where the OldValuesParameters is retrived from?<asp:SqlDataSource ID="SqlDataSource1" runat="server"
    ConnectionString="......." SelectCommand="SELECT * FROM [MyData]"
    ConflictDetection="CompareAllValues" DeleteCommand="DELETE FROM [MyData]
    WHERE [ID] = @original_ID AND [last_mod_time] = @original_last_mod_time "
    OldValuesParameterFormatString="original_{0}">
    <DeleteParameters>
    <asp:Parameter Name="original_EID" Type="Int32" />
    <asp:Parameter Name="original_last_mod_time" Type="DateTime" />
    </DeleteParameters>
    </asp:SqlDataSource>
    
    with a FormView bound to that datasource(DataKey is ID), in the
    ItemTemplate, there is no control that is bound from ID, nor Last_mod_time
    
    but when deleteing, it fail to delete correctly, because the
    @original_last_mod_time was empty(the viewing data has a last_mod_time),
    while @original_ID has the correctID in it
    
    so my question is, WHERE does the @original_ID come from? and why
    @original_last_mod_time was empty?
    
    thanks.
- 6
  - Let us think i have datagrid which displays record from database, now if any neHai,
    
    Q:- Let us think i have datagrid which displays record from database, now
    if any new record is inserted in database how can the user knows the a new
    record is inserted in database so he can refresh the page?
    
    what is apporach we need to follow to do this?
    Plz send answer for this question
    
    Thanks
    Ali
- 7
  - Problem with adding UserControls programtic in the OnPreRender event and still keep the UC viewState(ASP.NET 1.1)
    Hi
    
    I have a problem with my ViewStates in a userControl. The problem is that
    the ViewState is not "writte" og changed if you like after editing in my
    case a textbox.
    
    This is the code I use to add the User controll
    
    Control Component1 = null;
    Component1 = LoadControl("MyUC.ascx");
    ((MyUC)Component1).RapId = 0;
    PlaceHolderForComponents.Controls.Add(Component1);
    
    The UserControl contains some textboxes wich is viewstateenabled and
    autopostbacks.
    
    If i change the value in one of these textboxes in the UC and the above code
    is placed in Page_Load every thing works fine, but if i place it in the
    OnPreRender event all my change to my textboxes is discarded.
    
    I simply Cant see why this should make the change disapear and i really hope
    someone has a solution.
    
    Best reagards
    Anders, DK
- 9
  - AddHandler VB.NET and ASP.NETHi,
    
    I have created a simple Web User Control. It dynamically creates a table.
    With a cell in the table, it creates a Button control set to run at the
    server. I then call AddHandler and handle the Click event from the button
    and raise it as an event within my User Control. This seems to be
    happening, so much as it getting the RaiseEvent line, but it just does not
    raise the event. There are no errors, it just carries on executing.
    
    Is there an issue with dynamically adding controls to a user control and
    wrapping their events in a single event in a User Control using VB.NET in
    ASP.NET? If not, can someone post a sample on how to do so?
    
    L.
- 9
  - Hold key to keep the message box before redirecting to a new page (ASP.NET program)Hi all,
    
    I have a problem in ASP.NET program (Web pdevelopment). In VB Sub function,
    I want to dipslay a message box. The next line of my code is to
    response.redirect to the next page. My problem is the program skipped to
    display the message box, but only redirected to the new page. I'd like to
    use a key to hold the message box and after press that key it will redirect
    to the next page. Can I do that in ASP.NET ? Please help.
    
    Thanks in advance.
- 9
  - Why does button_click create duplicate webform ?"Lee Holsenbeck" <email***@***.com> wrote in message
    news:email***@***.com...
    > hi,
    >
    > i have a button_click event that reads selections from 1 listbox and moves
    them to a second listbox, but when i click on the button; it creates a
    duplicate of the current webforms and display the results in the duplicate.
    > what setting have i changed/am i missing to make it repost back to the
    current webform ?
    
    Lee, please narrow this down to a small reproducer and post the code here.
    
    I don't know of any reason why there would be a duplicate web form. In fact,
    I don't know what you mean when you say "duplicate web form".
    --
    John Saunders
    johnwsaundersiii at hotmail
- 12
  - nested dropdownlist loses values - only in one instanceI have a page that has two copies of the same control in it. The
    control is:
    
    BorrowerControl
    
    the two references to it in the page are
    
    bControl1
    cobControl1
    
    The control contains a dropdownlist that is populated from xml. I only
    bind this data on page_load, not on subsequent postbacks (shouldn't
    need to). Code to bind (where this.States is a dataset on the page)
    is:
    
    foreach(DataRow d in this.States.Tables[0].Rows)
    {
    string txt = d["abv"].ToString();
    string val = d["abv"].ToString();
    li = new ListItem(txt, val);
    control.Items.Add(li);
    }
    control.DataBind();
    
    I'm getting some REALLY strange behavior. The dropdownlist in
    bControl1 maintains its values on postback, but the dropdownlist in
    cobControl1 does not. I haven't found anything that says I can't have
    multiple copies of the same control on the page, or that would explain
    this type of erratic behavior. Can someone shed some light on this
    situation? I can provide more detail if necessary. And no, I don't
    have enableViewState = false on either instance of the control.
    
    Sincerely,
    
    Bryan Ax
- 14
  - Conditional display of web page elementI have a few things such as buttons and URLs that may or may not be shown
    based on the value of a database column. I can hook to the database and get
    the dataset and datarecord just fine. I can retrieve the value into a
    variable fine. My problem is that I have no idea what code to use to tell a
    button not to be displayed if I don't get a certain value. In ASP I would
    just embed VBScript to check the value of the variable in an if then and
    either include the button or skip it on the fly. I can't seem to figure out
    how to do this in ASP.NET.
    
    Would someone please help me out with a code sample or a pointer to where
    this is explained?

Author

Message

muradmeghani

Posted: 2006-2-7 5:55:39

Top

dotnet-framework-aspnet, The request failed with HTTP status 502: Bad Gateway Hi:
I have a running application built in VS2003 and using Net Framework
1.1. I recently upgraded to VS2005 and converted the project to use
2.0 Framework.
My call to the web service gives me "The request failed with HTTP
status 502: Bad Gateway".

Is there any special setting I need to do while calling a web service?

Any and All help will be appreciated.

Thanks,
Murad

Juan T. Llibre

Posted: 2006-2-7 6:56:00

Top

dotnet-framework-aspnet >> The request failed with HTTP status 502: Bad Gateway I wish you'd included the failing code.

I googled for the exact error message and came up with :

http://www.codecomments.com/archive321-2006-1-393892.html

Does that look like it might have an answer for you ?

Juan T. Llibre
ASP.NET MVP
ASPNETFAQ.COM : http://www.aspnetfaq.com
==================================
<email***@***.com> wrote in message
news:email***@***.com...
> Hi:
> I have a running application built in VS2003 and using Net Framework
> 1.1. I recently upgraded to VS2005 and converted the project to use
> 2.0 Framework.
> My call to the web service gives me "The request failed with HTTP
> status 502: Bad Gateway".
>
> Is there any special setting I need to do while calling a web service?
>
> Any and All help will be appreciated.
>
> Thanks,
> Murad
>

Index ‹ dotnet-framework-aspnet

Next
- 1
  - Forms Auth SignOut QuestionI have a Forms Auth and use a button that allows users to SignOut below
    but when they sign out and PRESS THE BACK BUTTON they can see the
    previous page WHY?
    
    Sub SignOut(objSender As Object, objArgs As EventArgs)
    'delete the users auth cookie and sign out
    System.Web.Security.FormsAuthentication.SignOut()
    Session.Abandon()
    Session.Remove("Context.User.Identity.Name")
    'redirect the user to their referring page
    
    Response.Redirect("logon.aspx?ReturnUrl=%2fFormsAuthAd%2fdefault.aspx")
    
    End Sub
    
    ANY IDEAS WHAT I'M DOING WRONG!
    Thx
    
    *** Sent via Developersdex http://www.developersdex.com ***
    Don't just participate in USENET...get rewarded for it!
- 2
  - Multi-threaded HTTP ModuleAll,
    
    I am trying to write a multi-threaded HTTP module that handles the
    OnBeginRequest and logs it. What I am trying to do is to offload the
    logging to another thread which will allow the http module to release
    the OnBeginRequest.
    
    The issue that I have is that I keep on getting "Request is not
    available in this context" exceptions.
    
    The following is the code I am using:
    
    using System;
    using System.Web;
    
    public class ProcessRequest
    {
    public HttpApplication HttpRequest;
    
    public void ProcessingThread()
    {
    try
    {
    string sRequestUrl;
    if (HttpRequest.Request!=null)
    {
    sRequestUrl=HttpRequest.Request.HttpMethod;
    System.Diagnostics.Debug.WriteLine(sRequestUrl);
    }
    }
    catch (System.Exception ex)
    {
    throw ex;
    }
    }
    }
    
    public class HttpRequestLogger : IHttpModule
    {
    protected System.Collections.Queue oHttpRequestQueue= new
    System.Collections.Queue();
    protected bool bModuleRunning =false;
    
    public HttpRequestLogger()
    {
    }
    
    // In the Init function, register for HttpApplication
    // events by adding your handlers.
    public void Init(HttpApplication application)
    {
    application.BeginRequest +=
    (new EventHandler(this.Application_BeginRequest));
    application.EndRequest +=
    (new EventHandler(this.Application_EndRequest));
    }
    
    private void Application_BeginRequest(Object source, EventArgs e)
    {
    // Create HttpApplication and HttpContext objects to access
    // request and response properties.
    System.Threading.Thread oProcessingThread;
    HttpApplication application = (HttpApplication)source;
    ProcessRequest oRequestProcessor=new ProcessRequest();
    oRequestProcessor.HttpRequest=application;
    oProcessingThread =new System.Threading.Thread(new
    System.Threading.ThreadStart(oRequestProcessor.ProcessingThread));
    oProcessingThread.Start();
    }
    
    private void Application_EndRequest(Object source, EventArgs e)
    {
    // HttpApplication application = (HttpApplication)source;
    // HttpContext context = application.Context;
    }
    
    public void Dispose()
    {
    }
    }
- 3
  - Getting control of Items within a DatalistI have a problem as I have placed a dropdownlist in a datalist.
    
    Whenever the selected index changes I need to change a label inside
    the datalist.
    
    The problem is I can't get control of the label.
    
    When dropdownlist changes it goes to a function with args of
    systemEvent than a DataListItemEventArgs so I have no way getting
    control of the item in the datalist to change the label.
    
    Can someone please help me.
- 4
  - How can I change position of an image dinamically by code in asp.net 2.0 with c#I wanna create mobile images in my website. I have to refresh the position
    of the image whitout refresh all page also.
- 5
  - levaquin tendons [url=http://forums.allaboutjazz.com/member.php?u=25355 ]levaquin generic[/url] purchase levaquin onlinelevaquin tendons
    [url=http://forums.allaboutjazz.com/member.php?u=25355 ]levaquin generic[/url]
    
    purchase levaquin online
- 6
  - shopping cart binding to datagridHi,
    
    I'm wondering if there is a way to bind to datagrid or a gridview the
    items in an arraylist. These items all have vars such as price,
    qty..etc? (besides putting in a datagrid or datatable first).
    
    ex.
    ArrayList alShoppingCart = shoppingCart.GetCurrentItems;
    alShoppingCart contains an array list of Item objects.
    
    Thanks
    Maz.
- 7
  - Capture hyperlink text propertyI have an aspx page (referred to here as page_1) with a datagrid whose first
    column contains hyperlinks. When a user clicks one of these hyperlinks, he
    will navigate to another aspx page (referred to here as page_2). I need to
    cache the value of the link's text (hyperlink.text property) so that I can
    use it in the page_load event of page_2.
    
    I've thought of using a hidden field and then calling
    Request.Form("hdnClickedLinkText") in the Page_Load event of page_2. What I
    don't know is how to populate the hdnClickedLinkText field on page_1 when the
    hyperlink is clicked. I've thought about using AddHandler but there is no
    exposed click event for the hyperlink control. I could design a custom class
    which inherits from the hyperlink class and implement my own Click event, but
    this seems a bit much when a simpler solution may exist.
    
    Does anyone have any other ideas?
    
    TIA,
    --
    Joe
    
    VB.NET/C#/ASP.NET/ASP/VB/C++/Web and DB development/VBA Automation
- 8
  - Invoke IE from ASP.NETHi
    
    I would like to invoke a new instance of IE from within a page and pass it a
    URL. How can I do this in C#?
    
    I have tried using SHDOCVW.DLL to no avail.
    
    TIA
- 9
  - How to avoid instantiating the class more than 10 timesHi,
    
    How to avoid instantiating the class more than 10 times
    
    Harish.P
    Sr. Software Engineer
    Comat Technologies Pvt. Ltd.,
    Bangalore
    Email: email***@***.com
    Phone: +91-80-2361 8951/52
    Mobile: 9886041109
- 10
  - Oracle Data Provider for .NETHello to everybody,
    
    I hope this group is the correct one for posting my problem. If I've
    posted in the wrong place, could you please redirect me to the correct
    group? Thank you in advance for that ;)
    
    My problem:
    
    I need to call an oracle function from a .NET application passing an
    XmlType input parameter to it. I have no idea on how to set the value
    of this input parameter. I've tried to pass a String, but it results
    in a NULL XmlType parameter value (using Toad as a SQL Profiler).
    
    Any help is welcome,
    
    bye,
    
    Simone.
- 11
  - TIP: httpRuntime executionTimeoutI had noticed a number of people posting that they where having
    trouble getting the Web.config httpRuntime executionTimeout attribute
    to work as expected.
    
    I realized today that if the compilation debug attribute is set to
    "true" in the configuration, then the framework doesn't seem to
    timeout requests (probably because this might be annoying if you had a
    debugger attached and were stepping through code).
    
    It would be nice if the MSDN documentation for the executionTimeout
    config attribute referenced this dependency. A similar thing that
    threw me for awhile was that a trace="true" at the page level seems to
    implicitly cause a No-Cache directive to be issued in the response.
    
    Hope this helps someone.
    
    Pete
- 12
  - problem on downlaod zip file via asp net applicationwhen i try to download my zip file via my asp net program, the zip file will
    be corrupted after i download, below is my code:
    
    ' Identify the file to download including its path.
    Dim filepath As String = Server.MapPath("\eClinicApp\VISITD.ZIP")
    
    ' Identify the file name.
    Dim filename As String = System.IO.Path.GetFileName(filepath)
    
    Response.Clear()
    
    ' Specify the Type of the downloadable file.
    ' octet-stream
    Response.ContentType = "application/octet-stream"
    
    ' Set the Default file name in the FileDownload dialog box.
    Response.AddHeader("Content-Disposition", "attachment; filename="""
    & filename & """")
    
    ' Download the file.
    Response.WriteFile(filepath)
    
    Response.Flush()
    
    Any body know what happen, pls help
- 13
  - ASP.NET 2.0 hosting with ATLAS for personal homepagegood luck! If you find somewhere that does this could you let me know
    im looking for the same thing but havent found anywhere that will do
    this for less than 70
    
    email***@***.com wrote:
    > Hi,
    >
    > I'm looking for an ASP.NET 2.0 hosting with ATLAS to put my personal
    > homepage. I don't want to spend more than 25€ / year (=32 USD). And
    > of couse, I don't want add banners or popups.
    >
    > Anyone knows or has experience with a good one?
    >
    > Veerle
- 14
  - problem with multithreading and Web services method invocationHi:
    
    I have an ASP.NET page which makes a synchronous Web services method
    call. At the same time, however, I wanted it to load another page as an
    iFrame (i've also tried as a javascript popup window) - this second
    page is responsible for polling a DB and continually updating its text
    box display.
    
    The problem is that once the Web service call is initiated, the second
    page becomes unresponsive exactly until the call is completed, when it
    resumes. I'm baffled as to why this second page's request should have
    anything to do with the first one's Web service request. I've tried to
    encapsulate the time-consuming DB queries of the second page into a
    separate thread and this works great (I tested it by printing a
    timestamp to a file), but I also need a way of updating the display in
    real-time while the Web services call is going through. Are there any
    ideas as to how I can accomplish this?
    
    - adh
- 15
  - not properly authenticating?hey all,
    i have a simple asp.net app that using window authentication integration and
    disallowing anonymous users.
    
    well, when a user tries to browse to this page she gets a "The page cannot
    be displayed error." I figured I'd at least get the asp.net error page.
    
    any ideas?
    some environment notes:
    windows 2000 server sp4
    windows 2003 r2 sql server 2005 sp4
    xp pro sp2 vs2005 sp1 is my dev
    xp pro sp2 is the user's machine with nothing but ie on it.
    
    i'm thinking it's the user is not properly authenticating to active
    directory because when i changed iis settings for the app to allow anonymous
    the user can get to the page that way. but i'm not user how to troubleshoot
    this if this is the case.
    
    thanks,
    rodchar