.net - The VS.NET Designer For My ASP.NET Pages Show "response Is Not Available In This Context" For All Controls?
Feb 7, 2011
I have a VS.NET solution that was originally a 3.5 VS.NET 2008 solution, now upgraded to VS.NET 2010 .NET Framework 4.0. I rarely use the 'Designer' tab to preview the generated controls of my ASP.NET pages, but in this instance I want to to see the wizard of an Object Data Source Control.Now ALL of my pages (content pages of a single simple Master page) show the message "response is not available in this context" for all of my controls. I tied deleting the page from my project, adding a new page, and copying back in the source and code; same error. I also tried cutting out controls 1 at a time, and clicking "Refresh" in the designer but I can't find out the problematic issue. Remember every single page in my solution does this.
Should bar on the HTML designer show the tag name? It sometimes does!
Here's an image of what I referring to.
I thought for sure it must be a bug but considering that I heard that MS was rewriting the editor (designer too?) I am starting to question whether I know how to use it!
Note the "TD" tooltip on the bottom right. Shouldn't this "TD" appear on the bar on the far right where the mouse would be?
I'm working on building a an ASP.NET composite control that is a wrapper for a GridView object. I have been able to figure out how compose the control in order for the markup to appear correctly when added to an ASPX page. Now the issue I'm having is that when I drop an instance of the control on a form from the toolbox, I can't interact with the control using the functionality exposed by a GridView (e.g. columns editor, data source selector, etc.), and I don't see any design-time rendering of the child GridView control. What I would like to do is to basically forward the designer behavior of my composite control down to its child GridView control. I have experimented with implementing a custom designer class that inherits from GridViewDesigner that simply initializes itself using the GridView child of my composite control. However, this doesn't seem to work, as I encounter an "object reference not set to an instance of object" error at design time; I'm wondering if this is even the appropriate strategy to achieve what I'm looking for. how to enable GridView-like design time behavior in composite controls. I have scoured the Web looking for articles on how this is accomplished, but I've surprisingly found virtually no resources on the topic.
I have configured my web application session timeout to 30 mnts and kept the code
Response.Redirect("Login.aspx")
in the Session End. But when ever my session is ending its giving exception "HttpException was unhandled by user code, Response is not available in this context.".
I've a project where i need to allow users to design their own pages for their application. So i want to create a designer/editor using ASP.NET/C# or silverlight or using anyother MS technologies. The designer should have the following featuresDrag and drop controlsMove the controls in the designer toposition it Preview mode/Source ModeProperty Window for Controls with specific propertiesI've not any designer as a hosted application. I basically want to create something similar to visual studio designer as a web app.
When my asp.net aspx page unloads i am trying to check if the current session is expired. I have this code in the Page_unlaod and i get a "Response is not available in this context" error. What is the problem placing this code in the Page_unlaod?
[Code]....
the page is in a frame with 3 other pages so when the page is doing a postback, there is client side code that will the page 2 in the frameset to 100% visible, then when page is laoded and the document is ready it sets itself 100% visible in the frame. I have tried placing the code in page_load but when the session has timedout the pageload is never executed again. I have tried to place the code in the pageload of page 2 in the frameset but that causes some funny behavior and unwanted redirects.
How do you delete more than one entity at the same time in the designer Entities list. it seems that the designer interface only allows the selection of 1 entity at a time....
I got how to add textbox to gridview at footer... it working fine... but if i do pagination for it.. textbox at footer in gridview reapeting in all page.. but i want to show that textbox at last page of gridview..
I have a default.aspx page, it contains a checkboxlist and button (Button1). There are other items too but not significant for this question.
The user selects an item in the checkbox list. Based on which item is selected, in my button click code, I take the user to another page (Page2, for example). In that page I have TextBoxes, where user fills some numeric values. On this page (Page2) I have another button (Button2). In the Button2 Click code, I want to use logic, where I need to know what was checked in my checkboxlist in previous page. How can I do that. I get the error
Error 17 The name 'CheckBoxList1' does not exist in the current context
On default page Button click I have like this..
[Code].....
1. How can I recall what was checked in default page checkboxlist?
2. Secondlay, the values user enters in this page (page2) in TextBoxs, I would need to use them in later pages, how can I use them in later pages. TextBoxs have unique IDs.
I've got a form with a button on it. You have to be logged in to see this form. I use this code to check if the user is logged in and act appropriatley.
Dim isLoggedIn As Boolean = CType(Session("LoggedIn"), Boolean) If isLoggedIn = False Then Response.Redirect("Login.aspx") End If
The button runs a report that takes anywhere from 0.5 to 20 seconds. For testing it just sleeps for 10 seconds.
Threading.Thread.Sleep(10000)
The problem is this. Say User1 comes to the form, logs in and runs the report. If User2 comes to the form, the page will not load until User1's report is done.
Now, the bonus is if I comment out the response.redirect line, everything works fine. But if that line is in there I will get this problem.
I used a modelPopupExtender to make a screen freeze. after the saving i do an response.redirect to the same page but when i do that i could see the panel saving again before reload.
here is the code
[Code]....
on Code Behind when finished button clicked i do show the next view from the multiview as well as the New button. inside the finished button click event i do mpeScreenFreez.Hide(); to hide the popupExtender. When i response.redirect i could see the panFreeze panel poping up just before relaod.
I am using ASP.NET 2.0 with C#(No AJAX) in my project. In a particular web page, when the a button is clicked, some server intensive processing occurs before the same page is displayed again with the results. While code execution happens on the server in response to Button_Click event, a blank white page is shown to user on his browser in between post backs.
How do i show a message in this case, that the processing is still going on and ask the user to wait.
I have used javascript to show a message on page unload. But this message is also erased when the page is posted back to the server and the user sees a blank white page on his browser. How do i avoid this white page? Is there a way to show a message in the blank white page ?
I need to to export a file to the user. It takes 1-2 min to generate the file so I'd like to have the page go into a kind-of modal mode with a layover on the page and a 'Working' spinner showing. The problem is I can't make the modal stuff go away after Save File dialog is closed.
How can I remove the layover after the dialog is done?
I would like to display the list of recently accessed/visited web pages just as google chrome shows. I want to achieve this using C# and asp.net.
I am working on a site where the user can see the list of pages that they have visited, I tried using iframe but that does not work as per expectation. I am looking for a clean and intuitive interface something like google chrome.
I would like to provide a thumbnail view of the recently visited pages.
To keep my question simple, I want to display a list of urls as thumbnails, just as chrome does
I have a requirement to show an Exit Popup on one of our processing pages. I am showing the exit popup by registering a client side javascript like
window.onbeforeunload = ShowExitPopUp();
The popup executes fine if you close the window, or try to type in a different URL. However the issue is that my processing page is also performing a "Response.Redirect" on the server side once the process completes. When response.redirect happens the exitpopup also shows up. Is there a way to have the exit popup not show up in that case?
Since my server side code is running through an UpdatePanel, so I have tried registering the following, in an attempt to remove ExitPopup from client side. However this doesn't work since server side redirection happens before end request.
I have developed a website using ASP.net. The pages use a master page with the background image set to the colour I require. All appears OK until I resize the window - then as I reduce the window size and or change the zoom level - white blank areas appear on the background to the right of the page and textboxes remain the background colour overlaying the white areas. This also happens when view in other browsers.
