Alternate Or Toggle Response.Redirect?
Oct 7, 2011
I'm fairly new to VB.net and this is my first post on this forum.I'm creating a website in Visual Web Developer 2010 Express in ASP.NET/VB and I'm trying to find out how to alternate a Reponse.Redirect, basically I'm looking to redirect every other visitor to go to a different site.
For example:
Visitor 1 gets: Response.Redirect("http://site-a.com")
Visitor 2 gets: Response.Redirect("http://site-b.com")
Visitor 3 gets: Response.Redirect("http://site-a.com")
Visitor 4 gets: Response.Redirect("http://site-b.com")
and so on
Also, if there is a way to set a cookie for that visitor, so if they visited within let's say the last 90 days, they will go to the same site they visited before, and not be redirected by the Response.Redirect.
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Jul 7, 2006
Does someone know If Response.Redirect can be used inside a method of a web service. I'm trying and I get an error. If I use it outside of the web service I have no problems.
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Oct 7, 2011
My ASP.NET (VB.NET) application uses SiteMaps to display a navigation menu on the top of each page. In the code behind of some of the pages, I am dynamically amending the URLs of the SiteMaps nodes (to add parameters to the end of the URL) e.g. say I have somePage.aspx.vb and anotherPage.aspx.vb and they both contain the following:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
AddHandler SiteMap.SiteMapResolve, AddressOf Me.ExpandForumPaths
If Not Page.IsPostBack Then
Setup()
[code]....
My problem is this, if I am in the code behind of somePage.aspx and I do a Response.Redirect("~/anotherPage.aspx") - then, when anotherPage.aspx.vb is being loaded, it is the ExpandFormumPaths method of somePage.aspx.vb that is hit, not that of anotherPage.aspx.vb.
My understanding is that a Response.Redirect tells the browser to do a new request to the supplied URL - I don't know why it's hitting the method belonging to the previous page.
I've tried amending the method names (i.e. not having the node processing method called ExpandFormumPaths in all classes) but I still encountered the same issue.
When I go straight to the URL of anotherPage.aspx the correct method is hit, it is only when I am using Response.Redirect that this happens.
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Mar 12, 2009
I'm trying to run some java script just before a page redirect but it fails to run.
When I comment out the Response.Redirect all works fine but this goes against the particular requirements. how to implement this functionality?
Dim strscript As String = "<script>alert('hello');</script>"
If Not ClientScript.IsClientScriptBlockRegistered("clientscript") Then
[Code]....
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Oct 5, 2011
My VB.net tabcontainer needs to stay on the active tab when I have each submit going through the response.redirect. How can I achieve this? I need that response.redirect there because it will show what has been added in the main tab container.
<asp:TabContainer runat="server" ActiveTabIndex="0" Height="200px"
Width="175px" ScrollBars="Auto" EnableTheming="True" Font-
Underline="False" ID="TabContainer2" EnableViewState="False"
Style="float:right; padding-left: 110px; margin-bottom: 340px;"
OnActiveTabChanged="TabContainer1_ActiveTabChanged">
[Code]...
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Jul 9, 2009
[code]I have the above code in my aspx.vb file but the Response.write script doesnot work it directly redirects the page.but if i remove response.redirect the script works fine.
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Sep 22, 2009
I've got a strange problem with a Response.Redirect. I'm using VB.NET with the .NET 2 framework (so VS2005 & SP1).I've got a page that I do a form submit on (that's a proper form method="POST" hard-coded onto the page) and that properly posts me back the page data which is then processed. As part of that processing the system determines if we need to get sent to another URL after processing has been complete. So the request.httpmethod = "POST".
So if the "GotoPage" parameter has a URL specified we then do a response.redirect(URL, false). (False as we want page processing to complete in order to write some timing logs etc).The page correctly redirects but instead of the response having a "GET" as the request.httpmethod it has a "POST" instead Now, we're using our own custom framework so that we use the HTTPRequest method to determine if a page has been posted back or is being "Getted" so the "IsPagePostBack" property doesn't work (that only works when you're using the normal .NET controls and form submissions). In all other instances our code works happily but what might be causing the Request.httpMethod to not be being set correctly ? I've tried doing a response.clear before the redirect in case headers are being written out before hand but to no avail.
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Jun 3, 2010
If you try to access a password protected page it does a security check and redirects you if you are not logged in, retaining the URL (ie. Members/MemberLogin.aspx?oc=/PodCast/Default.aspx)The vb script places the "/PodCast/Default.aspx" in a variable and holds it until the login process is complete.Once the user types in their username and password it is suppose to do a Response.Redirect(strRedirectURL) and go to the "/PodCast/Default.aspx" but instead it goes to the default.aspx page for logging in successfully
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Aug 12, 2011
I am trying to allow the user to download an excel file, by using
Response.Redirect(
"http://localhost/myapp/download_folder/example excel file_july.xls")
in page load of an ASP.net page but on the client side i a m getting the following screen in firefox 3.5 You can observe that the file name and file type are shown as empty fields. The ok and cancel buttons are not doing anything.This happens only in firefox 3.5, it is working in firefox later versions and other browsers.I tried clearing the Response with Response.Clear(), using Response.BinaryWrite with the file byte array and even tried to open the file with the javascript by calling window.open(url).
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Jan 15, 2009
I have a script that reads a form and puts some info into a cookie:
[Code]...
The time is properly set right before it redirects, but when I try to print out that value this way (I have also tried Dim oCol as HttpCookieCollection = Request.Cookies, but I get the same result):
[Code]...
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Jan 18, 2010
I've noticed that when I Response.Redirect to an .aspx page, it sometimes displays a cached page instead of actually executing the page and pulling fresh data from the database. I'm not using output caching or anything special in .Net here -- this is a CRM, and the caching is either happening on the client or, perhaps more likely, automatically in IIS. There is never a querystring involved, by the way. I'm passing a key via session. I know that if I used the querystring it would probably partially bypass the cache problem, but it's not an option in this case.
I did a little digging, and some people get around this by using Server.Transfer (which actually behaves differently than Response.Redirect and some of the details are not always desirable), and some other people said to set Response.Cache.SetCacheability(HttpCacheability.NoCache) on the page where I want to avoid caching. I thought .aspx pages were always flagged to avoid caching. Right?
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Mar 7, 2011
I have a page in which one chooses from a selection of dynamically generated buttons. The ASPX code is as follows:
<div>
<asp:Repeater ID="rptrHalls" runat="server" OnItemCommand="Choose_Hall">
<ItemTemplate>
<asp:Button ID="btnChooseHall" runat="server"
[code]....
When I first tried running the code I received an error message of "Invalid postback/callback argument". I set the ASPX page to have a enableEventValidation="false" property and tried running it again. It generates the page fine but when I click on a dynamically generated button it acts as if it is loading something and then just brings me back to select_hall.aspx (the page all this code is one), when (as you can see above) it should take me to select_room.aspx.
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Jun 20, 2011
I have a Web application (Help Desk Ticket System) with an inbox to monitor incoming requests and made some filter buttons that help the user arrange the requests based on requester name, creation date, etc.
Every filter will simply call the same page but will add some code to the query string. Example, if the user presses a button labeled [Sort by Date] here is the code behind for that button:
[Code]...
But I know that Response.Redirect does not accept javascript, and I don't want to split the code between Code Behind file, and ASPX file (adding OnClientClick attribute) because I will need to perform both VB instructions and also redirecting the user.
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Apr 13, 2011
I am working on a VB.NET web application. When someone successfully changes their password I want to show a popup message that lets them know it was changed successfully. After they click OK I want to redirect them to the main page. Code looks like this:
ClientScript.RegisterStartupScript(Me.GetType(), "confirmScript", "ConfirmNewUser();", True)
Response.Redirect("MainPage.aspx")
Why does the redirect happen and the alert popup never displays?
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Nov 21, 2009
I am using a client.openRead to send request and passing line through finalurl.
Dim data As Stream = client.OpenRead(finalurl)
Now my server blocks ports and i am getting error on this line now is there any other solution to client.OpenRead and what ever i am sending throught this is code is going on other company's server so i can't tell then to change their way so is there any other solution to this?
I AM THINKING THAT IF PORTS THEN IMPOSSIBLE TO SEND REQUEST.SO ONLY WAY IS TO CHANTGE SERVER WHER I HOST MY SITE
Dim data As Stream = client.OpenRead(finalurl)
And in final url i have other sites url and some querystring data
For example
dim finalurl as string= [url]
I already use WebHttpRequest but it not works still server not allow it.But i try it with response.redirect and it works but not suiteable to my conditions.i want control on my site so i was using Dim data As Stream = client.OpenRead(finalurl) but now server block some ports due to some reasons
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Feb 2, 2011
I've a VB.NET code called when I need to delete an object from DB. On Page_load I check if it's not post back (to prevent a manual refresh) and, after the deletion of the object I redirect to the caller page using Response.redirect. At this point my code raise an
[Code]...
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Apr 27, 2012
What appears to be a simple logic implementation is embarassing me each time I try to get it done. I have a very simple task: loop over rows in a DataTable and each time the next row is reached, set a variable alternating between 0 and 1.
Dim the alternatingValue as Integer
For Each dr As Data.DataRow In DT
alternatingValue = 0
Next
...so, when this loop finishes with this row, I need to set the alternatingValue = 1 Then when the next loop finishes, I need to set the alternatingValue = 0?
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Apr 21, 2010
i made a tcp/ip application using the .NET TcpListener class, my problem is that sometimes (about 30 / 4000) the connection between the client and the server got interrupted in the middle and the server response to the client is lost.is there a way to know if the server response was successfully sent to the client without the client response back?
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Jul 15, 2010
one of my forms wont load! it is not underlined in blue or whatever but it keeps giving me a runtime error and i dont know why bc it was working before
Code:
Private Sub AddEmployeeToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddEmployeeToolStripMenuItem.Click
NewEmployee.Visible = True 'throwing the error
Me.Enabled = False
End Sub
thats how i have been opening my other forms too but just this one gives me this error "An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object."
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Feb 15, 2011
we develop a dll in vb.net and we call that dll in our application .eacgh and every time we register the dll using regasm method.is there is any code for register the dll
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May 6, 2009
Basically,I would like to bind the data into datagridview which called PODetailsGrid during page_load. After the data had been bind into the gridview,I would like to make alternate color in each row. For example, the font color for row1 is Black,then second row should be Red,then third row will be Black again..
Code:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
GeneratePODetailsView(GenerateDataSource())
End Sub
[code]....
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Nov 19, 2011
I know how to have alternate row colors with ListView. But how about with ListBox? I've run a search. I read in some web sites where they say you can't. Is that true? Meanwhile, I've done something like:
For i As Integer = 0 To ListBox1.Items.Count - 1 Step 1
If i Mod 2 = 0 Then
ListBox1. BackColor = Color.FromArgb(150, 250, 255)
Else
ListBox1. BackColor = Color.White
End If
Next i
with ListBox's DrawItem event. And it doesn't work.
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Mar 5, 2011
In the program I'm writing I need to have a form load a web page and insert a username and password, then if the resulting site of the login is the error page, it will show the original login form and if it succeeds in the login, it will show another form.[code]...
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Sep 11, 2010
I'm trying to update the UI from a background thread, but the method I'm using at the moment isn't working. From what I've been reading, the method I'm using should work, but it isn't.[code]...
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Sep 21, 2010
I would like to get a 'due' or predicted inspection date based on alternating with another date? How would I go about this? [Code] The due inspection either can be 24 months (second yearly) but it has to alternate with the last safety inspection.
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May 19, 2010
Currently I'm working on a program that will run out of my startup folder when I logon to windows so instead of typing in a password my program will run fullscreen blocking any access to Windows until the user presses the buttons on the form in the correct order. In order for this program to actually be purposeful i need to block keystrokes such as "Alt-F4" and "Cntrl-Alt-Delete". I've looked around on google searches and I usually find a similar solution but when
Imports System.Diagnostics
Imports System.Runtime.InteropServices
Public Class Form1
[code].....
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Nov 8, 2010
I want a supervisor override capability for my application.I want to provide a username login prompt (including domain). If the user is in the approved list and the password correct, show advanced controls.What .NET code / functions allow this?
NOTE: VB.net answers preferred. C# also accepted.
EDIT: the logged in user is not the user authorizing the override.
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May 6, 2009
Basically,I would like to bind the data into datagridview which called PODetailsGrid during page_load. After the data had been bind into the gridview,I would like to make alternate color in each row. For example, the font color for row1 is Black,then second row should be Red,then third row will be Black again and so on..
Code: Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
GeneratePODetailsView(GenerateDataSource())
End Sub
[code]....
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Dec 4, 2009
I am writing a program that stores filenames, along with a lot of information about the files in a database. I need to be able to open these files in three different programs from my application. One of these programs, AutoCAD is the default program for the files, but the other two are more difficult. These two need to open the file in a program that is not the default for the file type. Eventually, I'd also like to allow users to point the application to the instance of AutoCAD, MasterWorks, or FeatureCAM that they want to open. I have found articles that explain how to open a file in a default application and articles that tell me how to open any application with a file name, but only 1 suggestion of how to control the program used to open the file. For some reason I cannot get AutoCAD to recognize the file I feed in if I use this method though, so I think it's wrong. This is the method I found that doesn't work:
Start("D:Program Files (x86)AutoCAD 2007acad.exe", file)file is a variable that contains my file name. Since this works fine when I take the program path out, I know the filename is correct, but AutoCAD says it is not.
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Mar 5, 2010
Setup and deployment project template is missing in my installation
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