I am working on ASP.NET3.5 platform. I have used a file upload control and a asp button to upload a file. Whenever i try to upload a file which contain special characterlike (file#&%.txt) it show crash and give the messeage "Server Error in 'myapplication' Application." A potentially dangerous Request.Files value was detected from the client (filename="...New Text &#.txt"). Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.
Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Files value was detected from the client (filename="...New Text &#.txt"). Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. how can i prevent this crash using javascript at client side?
How to get data (read file) chosen in FileUpload control without FileUpload.SaveAs Method on the server? Is it possible write it at once to some object?
I have a FileUpload control in an UpdatePanel and when user select a file, the full file path will will be stored in a hiddenfield, and during postback, i would like to assign the full file path in the hiddenfield back to the FileUpload control textbox, possible to achieve that?
I implemented a lot of ASP.NET controls inheriting controls from existing control library. My problem is that I can't use existing library themes/ skin files for skinning my controls. Is there a way to use existing skin files in inherited controls? Changing parts or renaming skin files is not an option. I could read data from skin file and then apply it to control programatically. Is there some kind of API for reading skin files?
I've got a Login control on a page, I'm trying to style the hyperlinks used in the control (e.g. forgotten password link). I've got a theme containing a stylesheet where I've defined link classes. I set the CssClass property of the HyperLinkStyle property of the control, but it has no effect. All other areas in my page where I use stylesheet classes it works, except for this login control.
Why is the skin not beeing applied to the control. If i declare the control in my aspx page it works ok, but if I try to do it programatically it does not work...
i want to know how to apply timer control on asp.net web pages.in my web application i m having assessment pages, where i am retrieving question and answer from database.everything is working fine but i want some kind of restrictions, like Assessment Time(20 Minute) so user can attempt question for specified time only.there should be a time limit.
I am using asp.net menu control with sitemap. I placed this control in master page. I want to apply style sheet for that menu control. Can any one tell how to do that.
I need to create custom control. It should be able to use diffrent templates in runtime. I mean that from code behind I need to change template path. How can I do it?
And when I'm In the TextBox on my usercontrol I can't see in the SkinID property the textBoxSkin. I insert in the code SkinID="textBoxSkin" but nothing happened.
I have several regular expression validators in my site. Some validate postal codes, others validate phone numbers and still others email addresses or something else. What I would like to do is be able to specify a SkinID for regex validators that have a more specific purpose (e.g. postal code validation), but also have the default definition for regex validators apply as well.
So, I could specify some properties that apply to ALL regex validators and then some properties that are specific to certain regex validators (which I would specify by SkinID). Is this possible, or does only 1 .skin file definition apply?
Iam facing a problem in ModalPopupExtender, i have made a usercontrol to show a popup frame and made popheader for dragging the header. but iam unable to find the panel id for PopupDragHandleControlID. can anyone tell me how to do. user control
I'm using a fileupload control to upload images. The upload is working but I would like to know how to display the uploaded image. For example, user uploads file, (already done); the image is displayed in the page.
i am using Fileupload and 3 dropdown control in update panel, 3 dropdown will be post back on dropdown selected index change event (i.e like Country,states and city... get the value from db as per country,states and city)
THE PROBLEM IS
While postback the filename path is gone from the file upload control(as expected/ or Default property).
I am converting the file to byte array, to store in the database from file upload control.
How can i retain the value or Is there any way to solve this issue.
Is there any ajax control for file upload or any free controls which retain the value after postback also...?
Or it is possible to set the value to file upload control during postback ?
