I'm creating a web page that will show a form that allows a user to query a database and then page backwards and forwards through the data. In other words one record of the returned data will be displayed on the form and the user can move forward to display the next record or back to display the previous one.
My problem is that a large volume of data may be returned and I'm wondering the best way to keep this data between postbacks. I would think there would be too much data to use viewstate.
I'm developing a web app for which the client wants us to query their data as little as possible. The data will be coming from a Microsoft CRM instance.
So we've agreed that data will only be queried as and when it is needed, therefore if a web user wants to see a list of contacts (for example) that list is fetched into a local DataTable. Then if a new contact is created on the website the new contact is sent to CRM and added to the local DataTable at the same time. Likewise for edits.
If the user then looks at their contacts again the data will just come from the local DataTable.
In my database when I fire query it takes 40 secs on 1 crore data, similar when I use join with other table then it take more time. I have taken care non cluster index such thing. But still I want to optimize my query, what other thing I need to take like buffer, disk size etc. I am not sure on this area.
I have a standard ASMX web service which uses a lock object to process the first request it receives and reject other requests that come in before processing completes. The web service is hosted on a Windows Server 2003 box with a single-core processor. To test whether this works as expected, I wrote a client that spawns 100 threads. Each thread makes an asynchronous POST call to the web server (i.e., HttpWebRequest.BeginGetResponse()). From my own logging, what I'm seeing on IIS is that two threads are spawned. Let's say thread IDs 1 and 7. Thread 1 is assigned a small number of requests. It accepts and processes them, one after another. Thread 7 is assigned a large number of requests. It rejects them. Does anyone have theories on the following: Why are two threads spawned? And not four or a hundred? Why does there seem to be thread discrimination? Thread 1 looks like it has control of the lock object at all times.
I'm having an issue sending large volumes of emails out from an ASP.Net application. I won't post the code, but instead explain what's going on. The code should send emails to 4000 recipients but seems to stall at 385/387.
The code creates the content for the email in a string.
It then selects a list of email address to send to.
Looping through the data via a datareader it picks out the email address and sends an email.
The email sending is done by a separate method which can handle failures and returns it's outcome.
As each record is sent I produce an XML node in an XML document to log each specific attempt to send.
The loop seems to end prematurely and the XML document is saved to disk.
Now I know the code works. I have run it locally using the same SMTP machine and it worked fine with 500 records. Granted there was less content, but I can't see how that would make any difference.
I don't think the page itself times out, but even if it did, I was sure .Net would continue processing the page, even if the user saw a page time out error.
we have a classic ASP Webpage for displaying reporting data.
The process is following:
user inputs reporting criteria reporting criteria are passed to a method in a VB6 DLL containing the reporting business logic (generating a dynmic sql statement) VB6 DLL method returns xml data xml data are displayed with xsd transformation 150.000 datarows are displayed in some seconds (less than 10 seconds maybe) Now we want to extend this reporting function and decided to use asp.net (2.0) So I have written a little prototyp application with a SqlDataSource Object and a GridView Control.
A table with less data (about 100 or so) are displayed quickly.
But a view with about 150.000 datarows needs about 2 minutes and ended with a OutOfMemoryException!
The request of the customer is definitvely to display the data on one page like in the old classic asp application!
I am using media player to play audio and video. I am creating own button to increase and decrease the volume of the media player. working fine too.
Problem:
Even after reaches 0% volume its audible. If the player volume increase the system volume also be increased. Is it possible. How to achieve this task.
Control:
<object id="mediaPlayer" classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95" codebase="http://activex.microsoft.com/activex/controls/mplayer/en/nsmp2inf.cab#Version=5,1,52,701" height="1" standby="Loading Microsoft Windows Media Player components..." type="application/x-oleobject" width="1">
I built an asp.net application using web developer express 2008 and sql express2008. The live version hosted on Godaddy, for the most part is working well. However, occasionally the users are reporting an error when the user volume is high.
I have seen the other error pages work correctly and the error I am referring to above is the default error.It is possible that up to 10 users opening the same database table at the same time might be the problem? Would this be a potential cause of my unknown error? And if so what can I do about it?
I am currently working on a page that has 13 gridviews in it. Each one is in a control and a separate updatepanel. The time from link click to page load is 20 seconds though and I am looking for ways to load the controls asynchronously so that the page can load and then the data can come after. I have tried a few different methods so far but have been unsucessful so far. I thought about using the Ajax incremental page display pattern but I did not think this would work because it only returns html. I need to load the gridviews in and they need to support pagination and sorting.
We have a fairly large website with several master pages. Right now the titles are being controlled by Session variables in individual pages and set by the master page. The code is bad and needs to be redone. With the current system, since the master page is executed last, we can't completely overwrite the page title when needed from the page. What is the best way to create breadcrumbed page titles across a large site in ASP.NET with several master pages, without using Sessions variables? Session variables are bad for page titles mmmkkayy.
I have part of a project whereby I need to send 1 to up to 2000 emails from a webpage. One open source bug tracker used a Thread to send emails but it was riddled with bugs. So just want to know if anyone has any ideas of how I can create a procedure that send up to 2000 emails a go?
I was told by one of my colleagues to leave it as one process (normal routine sending one email at a time) as it won't take long to process all the emails anyway. Doesn't seem right and I want to use threading... maybe I like complex routines?
[Extra] I have something like: foreach(string email in emailAddresses) { MailMessage mailMessage = new MailMessage(); mailMessage.To.Add(...) ... SmtpClient client = new SmtpClient(); client.Send(mailMessage); }
We have a html page being rendered in the browser (IE) that causes the browser to hang. The page is generated through server side script (ASP.NET and viewstate is disabled). The page while loading takes a long time (its not a bw issue since we can reproduce it on local machine) and sometimes results in script unresponsive error. On debugging the issue we found that the html size on the client side is 4.73 MB. There's also a lot of DOM traversal (using JQuery) after document is ready (jquery-document.ready). After loading as well, the page simply hangs on any user interaction (scroll, mouseover) etc. A CPU usage spike (25-50% usage) is seen during loading and on any user interaction
I am facing the issue "The page was not displayed because the request entity is too large."I am using ASP.Net 3.5, Sql server2008, IIS 7.5 and OS Windows 2008.I am finding the issue on following scenario:1. The error only shows up if the page is viewed as HTTPS (SSL).2. After login in the application if user waits for 1 min or more before doing a postback.Page size is about 200kb. It is running quite fine on Http.
i want to check my fileuploas size . if bigger then 2mbm error message will popup, this is my some of my code
If file_newimage.HasFile = True Then Dim ext As String ext = System.IO.Path.GetExtension(file_newimage.FileName).ToString If ext <> ".jpg" And ext <> ".png" And ext <> ".bmp" And ext <> ".jpeg" Then MessageUser("Photo uploaded must be in .jpg/.png/.bmp/.gif or .jpeg format") Else If file_newimage.PostedFile.ContentLength > 2097000.0 Then
[Code]....
but when i input image 12MB, just to check my coding my page went "Page cant be displayed" ...
When we include Javascript files in our aspx files. either we write all the Javascript code in the Head section of aspx or we link to an external Javascript file.
So when the clinet makes a call to that page. Does that mean that all the Javascript will be loaded on the client side?
If that is the case then does not that mean that it will slow down the loading of page as all the Javascript has to be loaded on the client machine?
I have very basic knowledge of ASP.net. I am using following script to resize and image, but the problem is it increases the disk volume of resized image to almost 4 times or original image.
Example:
Original Image: 1024 x 769px and Disk space: 135 KB Resized Image: 600 x 380px and Disk space: 825KB Notice resized image becomes 825KB.
and implement in my Project your code is working but error is
I have 4 columns in database country, States, City and Area
in the area table 991 recordes are exists I am binding area onchange of City dropdown but records is not binding only showing loadding than I changed my storeprocedure write qurey to select top 673 records now area is binding but if I remove "top" from select its showing loading in area dropdown.
how can I solve this issue
<script type="text/javascript"> function PopulateArea() { $("#<%=ddlArea.ClientID%>").attr("disabled", "disabled"); if ($('#<%=ddlCity.ClientID%>').val() == "0") { $('#<%=ddlArea.ClientID %>').empty().append('<option selected="selected" value="0">Please select</option>'); }
