I have a page with an iFrame whose source is an ashx page. The handler takes in 3 arguments through the query string and generates a text/html response containing a table. When the table gets >1700 rows it crashes the IE8 browser. The browser freezes and returns a null reference error.If I take the html that is being rendered and place it inside a DIV on the page it renders fine in IE8.
View 3 RepliesI understand that each page refresh, especially in 'AjaxLand', causes my back-end/code-behind class to be called from scratch... This is a problem because my class (which is a member object in System.Web.UI.Page) contains A LOT of data that it sources from a database. So now every page refresh in AjaxLand is causing me to making large backend DB calls, rather than just to reuse a class object from memory. Any fix for this? Is this where session variables come into play? Are session variables the only option I have to retain an object in memory that is linked to a single-user and a single-session instance?
View 4 RepliesI have an excel sheet that contains around 30,000 rows and 18 colmns. These no of rows and columns may increase in future. I need to read all these records from excel sheet and insert into a table in sql database. For reading the excel book I am using Oledbconnections. The possible solutions I have known as per my knowledge, to insert the data are
1. To insert one record at a time which makes 30,000 database hits. How will this affect the performance?
2. To use liked servers - bu this is not working for me.I do not have database permissions to use linked servers. So, the only option i have is the first one.
i am trying to load a dynamic iframe but it cannot visualize the page.
this is my html code:
[Code]....
and this is my codebehind:
[Code]....
i am using a content update panel on the page but the div of the iframe is out of the content panel.
in my application iam using an iframe, all pages are loaded on that iframe according to menu selection.My problem is that while timeout the login page is loaded inside the iframe.under the menu sectionHow can i overcome this?
View 1 RepliesI have created a web application that docks other web applications into it.When an application is docked the app creates a link button in its "tool box" on the left hand side of the page, users can easily click on any link button to navigate to the desired docked app.
I have a web app that uses iframes to display other web applications inside it. In effect it is a docking application where users can easily access many web applications from within one main app, while staying within the main app. I am having challenges dynamically resizing the iframe based on the size of the application the user is accessing.I have searched the web and tried many ideas but have yet to discover the code that will do the trick.
First, for a docking web application is the iframe the best approach? I have see some posts on ajax but am uncertain how that will help.
Second, if an iframe is the way to do it does anyone have code that will completely liminate the need for iframe scroll bars?
Note:The applications docked in the main we app may be of any size and can change size as users interact with them.
Our website application needs to open other web sites Iframe.(Our application is web based tool to help high school children to analyze the websites. It has to show news websites to in one iframe and in rest of the page there will be questions related to the news website)
But since many websites use framekiller code, these sites take control of entire page. Is there any ternative way / solution to this problem?It is necessary to be able to open other sites in our website (in iframe or any alternate way), otherwise whole concept of our application will become void.
For some reason, with the Razor view engine, VS is crashing on me. I copied the CSHTML content over to a VBHTML file and begin reformatting it, and VS has crashed on me twice now as I change a helper or function method syntax from:
@helper SomeHelper(string text)
to
@Helper SomeHelper(text As String)
The whole machine must be rebooted to get intellisense/markup highlighing to work.
I'm trying to use a dummy TempDataProvider for some of my controllers.
The provider looks like this.
[Code]....
But I'm getting an error that says
System.NullReferenceException: Object reference not set to an instance of an object. at System.Web.Mvc.Controller.PossiblyLoadTempData()
i open a iframe in a page, from that page opend in iframe, i want the page url.means one page mainpage.aspx have a iframe, that iframe open open a iframepage.aspx page.from the iframepage.aspx page's button click event i want to referesh the mainpage.aspx page.how can i do.
i am inserting the value of dynamic controls into the db like so;
Dim ae1 As DropDownList = FindControl("AreasExpertise1")
If (ae1 IsNot Nothing) Then
x.Parameters.AddWithValue("@areasexpertise1", ae1.SelectedValue)
End If
then in my query i have parameters like so;
INSERT INTO [foo] ([etc], [etc], [etc], [areasexpertise1], [areasexpertise2])
VALUES (@etc, @etc, @etc, @areasexpertise1, @areasexpertise2)
When the user fills out the form, they see only areasexpertise1 and have to press a button to dynamically insert another area of expertise...If they only have 1 area of expertise, the query crashes and says 'must declare variable @areasexpertise2.Please can you tell me a way to either insert nulls when the parameters are empty, or to ignore them?
One of the projects I'm working on crashes the development server everytime I go to compile and run, or preview a page.
It's only just started happening, and I really need to resolve it.
My ASP.NET program works fine for 30 mins (approx) then crashes with the generic status code 500. I've reviewed my code and can't seem to figure out what the problem could be. The program is running under II6 and I'm using .Net 2.0.
View 2 RepliesMy css for listview Crashes for FireFox 3.0 and it works fine in IE 6 and 7 and FireFox 2.0. How to handle this?
View 2 RepliesI have web applications which were developed before I installed during mid week last week the SP1 from Web Platform Installer and MVC3. My applications currently still use MVC2. When I open Site.Master, the VS2010 would crash every time and tries to restart. The problem doesn't apply to .aspx, ascx, or other extension. Does anyone have the same problem? Here is what I have done to my computer:
1. Installed MVC3
2. Installed VS2010 SP1 and associated components using Web Platform Installer (install failed several time, but succeed this morning)
3. Modified myProject.csproj file using NotePad to change <mvcBuildViews> from false to true
Ive had problems with the calender throwing an exception when i clicked the previous month to many time to fast. Sometimes it doesnt happen. Is this a known problem? Is there any known typical solution?
View 2 RepliesI'm working on a "Website Project" (as opposed to an ASP.NET Web Application) which we received from another company as part of an acquisition.In general it works fine, however every time I close the project ("File" -> "Close Project" or just "File" -> "Exit"), the IDE crashes.If I create a new project this doesn't happen, and it doesn't happen for any other project/solution file I have handy.The other information I have that might be useful is that this project may have stared out as a VS2008 project, and previously it was under Microsoft source control (it's under Subversion now).
View 3 RepliesI am creating a sandbox AppDomain so I can load up an assembly and release it.
var sandbox = AppDomain.CreateDomain("Sandbox", null,
AppDomain.CurrentDomain.SetupInformation);
However when I Load an assembly into to sandbox, the debugger crashes. I am in ASP.NET.
var assemblyName = AssemblyName.GetAssemblyName(assemblyPath);
var assembly = pluginDomain.Load(assemblyName); // crash here
I made a small app to capture frame from video using asp.net, in visual studio, it works fine. however the problem arises when i try to use any other servers, I am currently using iis 7.5, and trying to debug on server, but alas when i reach some region of code the attached w3wp.exe just get detached, the process crashs, no debug available anymore.
Faulting application name: w3wp.exe, version: 7.5.7600.16385, time stamp: 0x4a5bd0eb
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
[code]...
Why CollapsiblePanelExtender crashes every HTML editor used inside it
View 1 RepliesI have a web form with a whole bunch of drop down lists (mainly) that works perfectly well and has been for some time. However, we've found a scenario that seems to corrupt the viewstate of this form in someway, or cause it to lose it's viewstate. The problem occurs when the user has this form displayed, then clicks on a link that opens up another window. A few more steps to open up a second and third window, followed by a write to the database. Then the user closes these windows down, leaving this original window open. At this point, the user selects something from one of the dropdowns. And the app crashes because the dropdowns have lost all of their values (and so a bit of code that is trying to work with one of the ddl's selectedvalues fails).
When the user selects this dropdown, the page_init event fires, followed by the page_load with postback = true. The dropdowns themselves are defined in the aspx page markup, but the values of them are generated and added in page_load (where postback = false). I've relocated the code to populate these controls to the page_init code and now the app doesn't fall over, because the values are re-populated. However, all of the selectedindexes are being reset, so the original values are lost and the screen redraws after this postback with all of the dropdowns reset.
I can't believe the number of issues that seem to work fine on test but completely crash and burn on production.I have a situation where the code works fine in the test/development environment, but when you press a button in production, it crashes with:
[Code]....
Its just a button push, that is suppose to rebind a quantity change back to the database that the user has changed in a textbox in Gridview Edit.
[Code]....
[Code]....
VS 2010 crashes instantly when I press = when adding the class attribute to anything.
The exact error I get is
Microsoft visual studio 2010 has stopped working.
Adding any other attribute works fine.
I am ruuning VS 2008 on Windows XP Service Pack 3. The problem I am facing is that my windows crashes after a blue screen whenever I run a website in VS2008.Its only with websites projects in VS2008 but not with WinForms projects. WinForm applications running without any problem.This happens in this sequence that when I run the project, it starts, debugs and port is opened for my project (a popup that comes right near the system clock in taskbar) and suddenly after that a blue screen comes and Windows restarts. After restarting,
a message comes that system has been recovered from a serious, send report to Microsoft blah blah blah...Can anybody figures it out what problem there can be?
I have static content like html,css javascript stored in DB. when a user requests for these i create a temp file in virtual directory and return the url. My web app is hosted on a IIS server. On some systems on creation of a file my IIS Application pool crashes and restarts. If i disable file-monitoring though the problem is resolved, but i dont have this luxury when i am deplying at the client end. Is there any way by which i can avoid app pool crash during file creation? If not is there any way by which i can serve static content like html, css, images, xml and js without creating temp files. I would need a generalized way of handling all these data types.
View 1 Replies