C# - Delete Files When Custom Control Is No Longer Used Any Event?
Mar 24, 2011
I have created a custom control which uploaded files to the server . These uploaded files list that is the name of the file and the file path i save in a session and the files i save to a temp directory .
Now, I want to delete these files as well as clear the session when this control is no longer used .How do i find whether the control is no longer used in the page . I should be doing this from the Custom control and not from the Page ?
I have been trying find a way, where whan a basic user wants to reset a record due to a typo. The use has to get a admin to enter there user password to confirm the update. this is based on a sql server 2008 DB that will execute a stored procedure to perfom the reset update. I am coding in c# working on a 3.5 framwork. I have seen thare a many confirm popup message box options but none for a password to confirm.
I've been working on a web form that has lost it's ability to respond to most event handlers, though code that I write in Page_Load still fires. No button click or text changed events will fire. This has been working for months, and suddenly stopped. I did a windiff comparison to an older version of the webform, and don't see anything suspicious.
What's the easiest way to delete all the files from my Temporary ASP.NET files in .NET 4.0 on my development box? It seems like I have to shutdown Visual Studio 2010, stop IIS, and then it will let me. Is there a simpler way?
I am creating a custom control. Let's say I'm reinventing the wheel and creating a custom Button control that derives from the UserControl class(only for example)
Well, it of course has a Click event handler. Now my problem is, when do I call this event handler? I know it happens sometime between the Pages OnLoad and OnLoadComplete, but I'm not quite sure what event I can hookup to so that the Click event is raised at the same time as other control events.
I am trying to create a simple custom control where in there is a image button on the control along with a label.
the problem that i am facing is that the image button appears just fine along with the specified properties. But somehow when i click on the image button it does not generate the click event. the page simply refreshes.
I am extending the TextBox class to include CustomValidator along with the TextBox. I have created properties like CSSClass for ErrorMessage, CustomErrormessage for ErrorMessage on failure. But I am not sure how to get server side validation method in the form of tag. Example:
<asp:CustomValidator runat="server" id="custPrimeCheck" ControlToValidate="txtPrimeNumber" OnServerValidate="PrimeNumberCheck" ErrorMessage="Invalid Prime Number" />
PrimeNumberCheck is the method name which is passed as parameter, same way I want to pass method in my custom TextBox for CustomValidator to run on server side.
I have a custom control which contains (amongst other things) an imageButton.
I'm adding a handler to the "click" event of the imageButton however when the button is clicked the handler routine is not called. where I am going wrong with this? should I be handling the click event in some other way?
I have a custom ascx user control on my page that includes a dropdownlist. There is an onSelectedIndexChanged event handler that is connected to this dropdownlist. The first time the user selects a value, the page does a postback and the logic executes correctly. However, if the user then goes to change their selection, the event handler does not get triggered.
I've created a UserControl that is dynamically placed onto my page during the Init event. It populates and works great, but I'm left scratching my head at how to retrieve data from it during a postback.
After selecting an item, the rendered HTML looks something like:
I may be completely off track and this may actually be impossible (or a stupid idea). The only alternative I can think of is to emit actual ASP.NET controls and hook the built-in event handlers.
I have created a Web User Control and convert it into Web Custom Control and add it in Tool Box of Visual Studio. When i drag and drop this web custom control from tool box, i want to execute some sql for that web Control. How do i write a code in Web User Control so that it will execute on drag and drop of Web Custom Control prepared from this Web User Control?
My CompositeControl creates dinamically several RadioButtonLists according to the DataSource information. These controls are added to the Controls list and rendered in CreateChildControls event.
I need to create a LinkButton that clear a specific RadioButtonList selection and do a postback, to load the DataSource information again (some selections changes the data that need to be loaded from the database). For each RadioButtonList, I've put a LinkButton and assigned the Click Event to a method inside the same CompositeControl, to do the RadioButtonList cleaning.
Unfortunatelly, the LinkButton doesn't trigger the Click Event. In HTML code, the link has the "onclick" attribute setted with the asp.net event, but when clicked, nothing happens.
I upgrade to VS2010 and I no longer sees the UpdatePanel control available. I do have the latest AJAX Control Toolkit but I do not see this option. In addition, I kept getting the above error. How do I resolve this issue?
This code worked until I published a recent set of changes to the web site. It's very strange behavior that I am having trouble debugging. Basically, I implemented some custom code to allow custom configuration of login timeouts from an app settings variable.
When debugging the application, if I click remember me or not, Login works perfectly. Once I post the updated code to the live server, login only works if I have the Remember Me option unchecked. If I check remember me, it does not log in, and it cycles the user back to the default web page. If I access the site from IE on the live server, remember me works correctly.
This works fine but from a performance standpoint this is not good as the pages are making a lot of requests to the webresources.axd and scriptresource.axd files. When I changed the CombineScripts property to true my ASP.NET AJAX control extenders are no longer working. What is the reason for this weired behavior and is there a fix for this?
Now that most the user interface is working properly, I'm stuck with the following issue: I want to add a button (html button tag) which has to trigger an event. I have been able to declare the event, the event args, the delegate,etc. The page using my control may assign a handler and that handler is called correctly when I explicitely call OnServerControlClick (The name I gave to the event). I cannot make the link between the button in the user interface and the event in the webcontrol source code. When the button is clicked, I get an error message saying a dangerous Request.Form value has been detected.