C# - Checking For Database Changes At Set Intervals In Page
Oct 19, 2010
I have an ASP.NET page which contains a large number of gridviews, which contain masses amount of data which take a fair while to rebind. I currently have it set so the gridviews are only bound when the account number is changed (on the page, the user searches for an account which then displays their information). I'd like it to be able to monitor a database table (hashing it maybe?) every few minutes, then if there are changes spawn a popup box informing them, and an option to have the gridviews refreshed. Firstly, is this possible in ASP.NET/C#? Secondly, what would the performance impact be on the page checking the hash/checking for changes in a large DB table?
View 2 Replies
Similar Messages:
Sep 22, 2010
I have a page that inserts a record to an sql database and I would like to do the following:
(i) Check if a record already exist before trying do an insert
(ii) If a record exist, the page should be able to inform/display a message in a textbox informing the user that the record already exist.
I have seen a number of post on the internet that suggest that one possible solution is to write a sproc and use the T-sql IF EXIST function. However, I have NOT seen a complete code showing (a) how this can be done (b) how to call the sproc from an asp page (c) and MORE IMPORTANTLY how to display a message informing a user that a record already exist i.e. when the record already exist in the database.
View 8 Replies
Feb 3, 2010
How to Schedule an ASPX Page to run at a particular intervals of time using Schedule Tasks in Control Panel"? If so can any one explain me in detail "How would I achieve that with neat steps".
View 6 Replies
Nov 28, 2013
How to aomatically refresh particular section of a web page Not whole page.
I want to auto refresh 2 different sections of a web page in my website without using javascript.
View 1 Replies
May 7, 2015
need to save autonatically after 10 am.
View 1 Replies
Aug 20, 2010
I am building next version of our Asp.net web application. for this new build one column is added in database. Now I have to make this new build backward compatible. Means build should be good for old database design (without that added column) and new design. Just wondering if there is an efficient way to know whether or not particular column exists in table you are working with?
at this time, I am getting all the columns in datatable and loop through it to make sure that new column is available in it? if yes the modified query with this column and if not then old query. Just cuious, what is the best industry practise to make any build backward compatible with old database design?
View 2 Replies
Sep 4, 2010
How to use ajax for checking username from database on text change?
Also give the method for on button click
View 1 Replies
Apr 30, 2010
how to check if a particular data in the database already, for example, i want to check if a username already exist in database, then the user cant choose that username.
View 6 Replies
Feb 11, 2010
Is there a cleaner way to check for a null value comming from the database?
Right now i am doing this
[Code]....
There has to be a better what than doing this on every row which could possibly be null
View 3 Replies
Oct 30, 2011
I have a web service that calls a stored procedure to retrieve a list of users and email addresses from a database and sends reminder emails to them.
I need to set it up so this web service runs once a day automatically. My first thoughts are a 'windows service' but I've never built one before. I've looked at the documentation and thought 'sounds like a thousand things could go wrong there' if, like me, you know very little about Windows.
View 4 Replies
May 10, 2010
I need to check for duplicate records before inserting them into the SQL database.Thus I have the following codes:
For count = 0 To GridView1.Rows.Count
If (GridView1.Rows(count).DataItem("Student Name").Equals(dtDataTable.Rows(count).Item("Student ID"))) Then
lblMsg.Text = "Records Existed"
End If
but there are error message. "Object variable or With block variable not set."
View 11 Replies
Apr 30, 2010
i have code to update multiple rows in a gridview. What I want is that if the row value is = 1 in the database then the row is checked otherwise it's not. I've put some pseudo code in below to illustrate what I want to achieve.
[code].....
View 3 Replies
Mar 1, 2010
I am using a form to add and edit record of database.
In Add case my email box has no value. I have used customservervalidation to check the given email address with previous database records.
In Edit case my email box is populated with data from database.
When i click save button in both cases my customservervalidation method invokes and checks the given value. it works fine for new/add case but in edit case it checks with itself also and says duplicate email... pointing own record...
View 1 Replies
Oct 28, 2010
I am getting user information from Ldap server.Because of this I am getting performance issues in my application. For this I have a created a method in Application_start event then everything is working fine, my problem is when ever user adds in Ldap those information is not getting reflected in the application because we have implemented this in application_start event.SoI want to keep this method in application_start only and I want to update the new users also in my application how to do this.If I write same code in session_start event then if user clicks on user maintenace tab then processing the request message is coming. So I want to be keep in Application_start event and also it should update the latest user information in the application.
View 1 Replies
Aug 5, 2010
I'm looking for some code to do a page rank check on a given domain provided I pass it a URL string in ASP.net. I have been unable to find anything and I have been searching for days.
View 2 Replies
Jan 18, 2011
I want to write an ASP page which will accept a set of parameters (lets call it Page A), and will then launch other ASP pages, feeding parameters to those pages as required (call these Page B and Page C).What I want to do though is make sure that Page A will only launch Page B if Page B isn't already open. I also want to perform the same check before Page A launches Page C.Is there an easy way to do this using ASP?
View 4 Replies
Apr 11, 2014
i want to display time on my screen and therefore i used timer control inside update panel and set my timer interval to 1000 but the time displayed after 3 seconds i mean 56 -53-52-49..... how to solve this below is the code
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Timer ID="Timer1" runat="server" Interval="1000" OnTick="Timer1_Tick">
</asp:Timer>
<asp:Label ID="Label2" runat="server" Font-Bold="True" Font-Names="Microsoft New Tai Lue" Font-Size="Large" ForeColor="royalBlue" Height="25px" Width="162px" ></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
View 1 Replies
Jan 9, 2011
is it possible to refresh my gridview at specific intervals without using using Ajax or the update panel..our system is to old to use Ajax!
View 3 Replies
Jul 7, 2010
I have written a windows based executable that runs certain scheduled tasks that user enters using a web site.Everything is working as they should, but recently users started complaining that when they schedule a task, it did not run at all.What I have found out was that sometimes the executable gets closed (some users close it accidently).
So I decided to show the scheduler status on the web page and I did the following:
Created a control table (table with one record) in my SQL database with a column called timestamp.
In my Windows application I have a timer that runs every 30 seconds. And I update the timestamp field with the current date and time.And in my web page I check to see the timedifference is <=2 (2 mineutes) with current date. This way I will know the scheduler status.
I am not sure whether this is a good method or not, because of those database calls every 30 seconds.
Could some one shed some light on this? Are they any better ways of doing this?
View 4 Replies
Feb 8, 2010
in aspx file i have two simple controls
[Code]....
Then in Code behind file i wrote this
[Code]....
When i check whether page is posted back or not with this method , by clicking the button
if(Page.IsPostBack)
{
..
}
then web form does not respond any more ..and when not using this condition ajax is working fine.
View 1 Replies
Aug 2, 2010
Can any one know's how to automatically update a GridView at regular time intervals?
View 1 Replies
Nov 1, 2010
I have found plenty of examples where the checkboxes to be checked are within a datalist, gridview or other datacontrol like that.. but i dont have that setup..
I have individual checkboxes within my page and need to provide a way to check or uncheck them all..
I cant use a checkboxlist because of the layout of the page.. so not sure if it would be easiest with javascript or do it with the checked event for the single check box that will be used..
I know that may not be the best or cleanest way, but is there a better way?
Reason i cant use a checkboxlist for the larger set of checkboxes, is that a few of them will have additional fields that need to be completed if they chose certain checkboxes.. so i have those controls next to the checkbox that they belong with..
View 2 Replies
Oct 13, 2010
In Global I have the following code that redirects the page to use HTTPS. I also have a SPROC that adds a record when a user visits a page. When a user visits a page, the SPROC is adding a record for the HTTP and then another record using the HTTPS. I'm not sure how to handle just adding one record. Is there something to add to the SPROC that will delete one of the records or should I do a code behind on an aspx page that executes the SPROC "IF" the page starts with HTTPS? HOw would I set up the condition to check for the HTTPS?
[Code]....
View 1 Replies
Jan 27, 2011
checking for null on aspx page
[Code]....
View 4 Replies
Oct 22, 2010
I have a checkboxlist (cblTeamMates) with a sqldatasource (sqlTeamMates) that has 3 columns (ID, FullName and Status ). The datavaluefield and datatextfield for cblTeamMates is "FullName" and the 2 status values possible are "Available" and "Absent". How do I go about, in the page load event, checking all the names (FullName) whose Status is "Available"?
View 3 Replies
