What is the best way to implement an edit page to allow only one user to modify data at a time. For example, if User A is on the edit page, no other user will be enter the page in edit mode until UserA is done editing.
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How to prevent multiple user to be logged in at a time using a user id ?
After login in to website, the same user id not login in any other system it gives alert msg User Alrdy Login.. and also i have another query If user do not click logout and directly close browser..
I have a dropdownlist for categories.
DataTextField = "Name";
DataValueField = "ID";
drp.Items.Clear();
drp.Items.Add(new ListItem("--select category--", ""));
drp.AppendDataBoundItems = true;
ID is int and I've got this
drpsub.Items.Add(new ListItem("--select category--", ""));
I want to insert some information plus ID in databaseeverything is ok when user select category from dropdownlist (for example: India, Iran, China) but when the userchoose --select category-- she face an error because the value here is "" not an ID(int value)how can i don't let user choose --select subcategory-- ?
I have 2 master pages Default.aspx is from Site.Master and some more pages that are from Admin.Master, I have used the code that to prevent the user from going back to previous pages after logout.
Here is my code
function preventBack()
{
window.history.forward();
}
setTimeout("preventBack()", 0);
window.onunload = function () { null };
The problem I am facing Admin.
Master page i.e I have Home.aspx, AboutUs.aspx,Admin.aspx,AddItem.aspx I was unable to navigate between those pages also. how to solve this. I have tried other methods also, but still facing same problem.
I have a login page and a dashboard page. Now user first login and then redirect to dashboard page. User press browser Back navigate button and now it's again on login page.
View 1 RepliesI have a signup page and Main page in my web site. i want to prevent an user to type directly the Main page URL, user should have access after signup/login.
View 1 RepliesHow to prevent a user to open a new Tab or window, if the user already in session?
View 2 RepliesI just want to detect who came to login into site and if same login already logged in ,if same login previously exits then we need to logout the previous session , how to do it using asp.net c#
View 1 RepliesWhen I click signout I am redirecting to home page but when I click browser back button it is redirecting to previous page how to eliminate this......
View 1 RepliesI've an application in asp.net, and when i click on back button IE browser taking back to previous page,i want to prevent the user going back to previous form.if user try to going back to previous page a meesage pop-up should show saying "You cannot go back to previous page, you have to re-login to see the previous page".
View 1 RepliesIn my application , i'm having a user agreement page which will get displayed when a user login for the first time, in the user agreement page if any user directly type the next page url, application will navigate to the successive pages without accepting the agreement. i want the user to navigated to the same page or login page when he directly type the URL in the agreement page.
View 3 RepliesI want if a file exists then it ask for "do u want 2 overwrite ?" with yes or no confirmation ,,, if yes then overwrite otherwise not.
I want to do this with of ConfirmationExtender with a textbox because the user can enter some info like who is the user and overwrite on what reason.
i have a page for registration there is a button when it clicked shows panel contain gridview to selcect a value from it/my proplem :
i want to prevent user to click any control in page except those on the showen panel until the user selects a value from the gridview.all the control should be enabled.an example for what exactly i want to do is when you create a post here in this forum and you click (select Tags) button it shows a list.and the rest of page turns to dark color ,how ?
so how to disable the controls and and enable them?i am using C#
I am using asp.net membership and the login control. I would like to prevent a user from logging in with the same use rname if they are already logged in. I would like to place code in the LoggingIn or Authenticate event of the login control to check whether the user is login and prevent them from logging in again. Any ideas on the best way to do this?
View 22 RepliesI have a web of ashx,in it
string ipSrc;
if (context.Request.UrlReferrer == null)
{
ipSrc = "";
}
else
{
ipSrc = context.Request.UrlReferrer.ToString();
}
string os=hbc.Platform;
string browserInfo = hbc.Browser + hbc.Version;
DAL.InsertData_OleDb(context.Request.ServerVariables["REMOTE_ADDR"], ipSrc, WebTitle, os, browserInfo);
In my website their is a module in which I m retrieving the data from the student master table..
In my gridview their are 5 columns (Student Id,Student name,Roll no,and a checkbox column,Date Textbox column which is empty) in which the data is retrieved from student master table....
I m adding the date in the textbox which is out of the gridview and when i check the checkbox for each student the data is stored in another table in database with a status as present for the checked students and absent for the unchecked students...
What i want is dat when i check the student and i select the date for the student and the data is entered in new table after all this i wld not be allowed to make the attendance for the same student for the same date bt i wld be allowed to mark attendance for the same student for another date..
for example i check the checkbox for the student "Rohit" and entered the date 1/1/13 and rohit is stored with status present in the another table for date 1/1/13 and now he shld be disabled so dat i wld not be able to mark his attendance for the date 1/1/13 and prevent the duplication...Bt after dat i would be allowed to mark "Rohit's" attendance for the date 2/1/13...
means he should be disabled for the single date...
I want to implement Login session , in which one user can login from one device only ..and if on other device try to login with same ID the First Device get an Alert..
View 1 RepliesHOW can I prevent a postback from a button in user control inside a modalpopupextender, so that the modalpopupextender doesn't close?
View 4 RepliesI am build Web site using asp.net 4.0 c# ... There are a forum on my website where user can save his personal details. my problem is that when user submit his detail in database and again refresh URL (f5), event again arise and request go to server, double entry saved in database. How I can handle it.
View 1 RepliesI have a page register.aspx that a user can use to register on my website. Once the registration process is completed, I redirect the user to thankyou.aspx where he will get a code to activate his account.
My problem is this: from the thankyou.aspx page, if the user click the "previous button" on the navigator, he can still have access to the information he had previously submitted and might cause data duplication . I don't want this to happen. I want in that case to redirect him back to thankyou.aspx or another page which will be different than the register.aspx.
My questions are:
1. how can I prevent the user to use the "previous button" on the navigator to avoid data duplication?
2. in case question 1 cannot be done, how can I know in register.aspx that the user comes from thankyou.aspx (which should not normally happen) so that I can redirect him to another page?
My approch was before redirecting to thankyou.aspx, I concatenated session.sessionID and another data to be retrieved on thankyou page. And on thankyou.aspx, I destroy the session after the page was loaded by using Session.Contents.RemoveAll(). And here, nothing happens. The session is still on when using the previous button.
where i created a usercontrol that has a dropdownlist but when setting the dropdownlist selected index in the page_load it was not updating on the postbacks to the new index but first loading was ok.until i implemented the method for modifying the usercontrol in the onprerender and then it was updating the indexwhy was the control intialized to its original state without using the overidden prerender method?
View 2 Repliesway to overwrite any contents of a folder upon fileupload even if the filename isnt the same? I only want one image stored at anygiven tim, but I have no way of knowing what filename the user may upload so how would you overwrite in my code below?
if (FileUploadControl.HasFile)
{
try
{
string theUserId = Session["UserID"].ToString();
OdbcConnection cn = new OdbcConnection("Driver={MySQL ODBC 3.51 Driver};
[code]...
I am using form authentication and in my web.config file I put the login url as "login.aspx".. Every time when the user goes to member area, it will return to that login.aspx if the user has not logged in yet.
However, there's one part in my web application that if the non-members clicks "Search" button, it's trying to access the search result asp.net page in my member folder/area. I want to take them to the registration page rather than the login page. How can I overwrite the form authentication login url?
How to "overwrite existing log file" ??? I have tried to set attribute property <appendToFile value="false" />. but still log file is not getting overwrite. My config file setting is as follow:
<log4net>
root>
<level value="DEBUG" />
<appender-ref ref="LogFileAppender" />
</root>
[code]...
With the following code:
protected void Button1_Click(object sender, EventArgs e)
{
if (FileUpload1.HasFile)
[Code]....
I want to make it so that if the file exists it changes the name of it, is there any built in functionality for this? Classic ASP had a parameter so that when you upload say house.jpg, and then again it would become house(1).jpg etc etc which was useful.
