Update Table Automatically?
Dec 9, 2010i am doing one web chat application.i show list of online user from db .some one user did not logout he exit. i want that time table automatically update the logout time (that partcular user ) .
View 4 Repliesi am doing one web chat application.i show list of online user from db .some one user did not logout he exit. i want that time table automatically update the logout time (that partcular user ) .
View 4 RepliesI'm sure this has been answered many times already, but I still can't seem to find exactly how to search for this issue, so apologies in advance.
Anyway, I have a VB script for entering a row of data into a table by a web user. When this row of data is entered, I wish to take some of the values from the columns of the "primary" table, and have that data automatically create a new row of data in a "secondary" table. I think I'm part of the way there, here is my script:
[code]...
"ProductsByMfr" is the "primary" table - the table that the user adds data into when the button click event is fired.
"DealerPricing" is a "secondary" table that I wish to have some of the data from the newly-entered row in ProductsByMfr copied into. Am I even close here?
I am using asp.net 3.5 c#. I am trying to do this:
In one page, a user can insert some stuff (name, phone .. etc) to the database. And then the user should be able to see the rows he added as a list automatically in a datalist (or other control). As he inserts rows, it appears in the datalist.
I tried to use update panel and inside it datalist, with a button as a trigger but it did n't work with me!
I have a 'feature of the week' on my site that I would like to have automatically change once a week. I was thinking of using an adrotator, is there a way to make it only rotate once a week?
View 2 RepliesI keep a label on the master page of my site that indicates when the site was last updated. I wanted to know if there was a quick and easy way to have the system update the date in the label everytime i compile the solution so the last updated field is always correct even if i happen to forget to update it manually.
View 3 RepliesI have an Asp.net page which requires certain sections to be partially updated automatically at an interval of 5 seconds. I was planning to use the good old Timer control with the AJAX Update Panel for this purpose, but after a bit of reading on this control i found out that it may have some problems especially if,
1) The time difference between the async event performed ( 4 seconds ) by the update panel and the Timer's tick interval ( which is 5 seconds ) are quite small, the update panel will be held up in the async operation all the time.
2) Also, the fact that timer control doesn't work very well with Firefox.
I just wanted to get your opinion as to whether if i should go ahead with the timer and update panel approach, write some custom javascript that does the partial page update or some other strategy altogether.
If I make a change to my database (let's say I add a column to a table), is there any magical buttons that I can click to have my Linq to SQL model update to reflect the changes to my table? I had to create two additional columns yesterday, and both times I found myself destroying and then recreating the Linq model.
View 2 RepliesI have an ASP ListView which I am using to display some pivoted information (across years) in a table. Currently I have the ListView templates defined as:
<LayoutTemplate>
<table id="listViewTable" class="tableData">
<tr class="rowHeader">
[code]...
I would like to know if is possible to create a table with itextsharp that if the is necessary auto-create a new row in the pdf ...
View 1 RepliesThere is a field called school which is a dropdown menu, I manually edit items and made it like these: select school, name of 6 elementaries and 2 middle schools, and a high school.I have another field called grade level, which is a drop down menu too, i manually entered the grade items for it: select grade, Kindergarten, 1, 2, 3......12.
I would like after user selects a school in the drop down menu, the field called grade level dropdown box' data source will be updated according to school. For example, if it is a middle school selected, the data source of grade level will be updated to 6, 7 8 grade, if it is elementary the grade will be updated to 1, 2, 3, 4 5 etc. In this way later, when user goes to select grade it will show appropriate grade level lists according to schools.
I found some code on the web and it threw me off. Look at the code below. You will notice only when the Hits == 1, does the cache get added. After that, the cache object isn't updated. It begs the question, does the object when updated, update the cache as well automatically? The answer here would make me remove some code in some of my classes.
public static bool IsValid( ActionTypeEnum actionType )
{
HttpContext context = HttpContext.Current;
if( context.Request.Browser.Crawler ) return false;
string key = actionType.ToString() + context.Request.UserHostAddress;
var hit = (HitInfo)(context.Cache[key] ?? new HitInfo());
if( hit.Hits > (int)actionType ) return false;
else hit.Hits ++;
if( hit.Hits == 1 )
context.Cache.Add(key, hit, null, DateTime.Now.AddMinutes(DURATION),
System.Web.Caching.Cache.NoSlidingExpiration,
System.Web.Caching.CacheItemPriority.Normal, null);
return true;
}
I would only guess that I would need to add the lines after the if statement:
if( hit.Hits == 1 )
context.Cache.Add(key, hit, null, DateTime.Now.AddMinutes(10),
System.Web.Caching.Cache.NoSlidingExpiration,
System.Web.Caching.CacheItemPriority.Normal, null);
else if (hit.Hits > 1)
{context.Cache.Remove(key);
context.Cache.Add(key, hit, null, DateTime.Now.AddMinutes(10),
System.Web.Caching.Cache.NoSlidingExpiration,
System.Web.Caching.CacheItemPriority.Normal, null);
}
Found the code at the bottom of the page here: http://www.codeproject.com/KB/aspnet/10ASPNetPerformance.aspx?msg=2809164
My scenario is create a webservice(regional weather prediction, or currency rate), and a client application having a updatepanel and then consume that service.Now, when webservice changes its data(temperture goes up or down, rate changes)I want to ask is there any way client can aware that webservice has changed so it will update properly.
View 3 RepliesHow can i automatically update a user control after a specific time without updating the whole aspx page.
View 3 RepliesI have a web page into which a user control is loaded. This user control contains a ListView. In the Page_Load event handler of the user control I have this code:
listView1.DataSource = TaskList; // Note: "TaskList" is a data table
listView1.DataBind();
It should be noted that the TaskList data table is actually instantiated in the web page. The user control then obtains a reference to it.
Everything described to this point works fine. Where I'm running into trouble is when I add a new row to TaskList. I had *thought* that the ListView control was dynamically connected to the data table, such that when I altered the contents of the data table in any way, that the changes would be automatically reflected in the ListView.
In my ASP.Net application I have several pages that provide a list of items from the database. Currently we are using an UpdatePanel to refresh the whole list on a certain interval so that changes from other users will be propagated the screen. Obviously this isn't very efficient and we don't think it will scale well.What are some other methods for accomplishing this. Is there a specific pattern for addressing this issue?
View 1 RepliesThis is my coding
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtUserFilter" runat="server" AutoCompleteType="Disabled"></asp:TextBox>
[code]...
I recently read Scott Mitchell's article series "Examining ASP.NET's Membership, Roles, and Profile". In Part 6 [URL] It says "to store additional, user-specific fields...If you are using the SqlMembershipProvider, this would mean creating an additional database table that had as a primary key the UserId value from the aspnet_Users table and columns for each of the additional user properties."
I created a table named Thread to store some specific users information and comments they make. I set the ThreadId as the primary key and the UserId as the foreign key to the UserId in aspnet_Users table. But when I run the application and use a user's account to submit a comment, there is an error in my Comments.aspx.vb page "Cannot insert the value NULL into column 'UserId', table 'ASPNETDB.dbo.Thread'; column does not allow nulls. INSERT fails.The statement has been terminated."
How can I make the logged-on user's UserId inserted into the Thread table when storing the user's other data information?
I've got a single table, with project information and schedule information. To make the data easier to present, I created a tab control with two panels (a detailsview in each). The first tab is for project info, the second tab is for schedule info (again, all fields in the same table). The problem is, if i change info in both tabs, and then hit the update button, only the data from one tab is added to the table. I think this problem is simple to fix, and boils down to the way I have the page organized, but I can't quite figure it out.
I've boiled my code down to the following conceptualized structure:
[code]....
When you click the update button, you return to the listview, but with only the information from your current tab saved. How can I get it to update from both detailsviews?
Since my content is embedded in my master page, if I place an update panel around my complete Master page controls including the content placeholders, are the content pages automatically included?
View 3 RepliesI am developing membership for website. SQL Server 2005 is at backend. I want Column <Package> to "Free" from "Premium" automatically when month ends. The website is membership per month basis. Two type of members "Free" and "Premium".
Is there any way to automatically column update as month ends. Can I do it with triggers? If yes then how?
Here's my scenario:
I'm using the ASP.Net Membership provider, but I don't want to allow system administrators to DELETE any users. Instead, I simply want to mark them as locked out (aspnet_Membership.IsLockedOut) of the system so they can't log in when an administrator assigns them to a role titled "Inactive". Make sense? Right now my trigger isn't throwing any errors, but it's not working either. Here's my trigger (which is on the aspnet_UsersInRoles table):
[Code]....
I am trying to delete or add rows in a table but since the table is in an update panel,upon deletion the row goes away and then comes back.I have tried using return false but it does not seem to work in IE or FF.
I am using the following code:
$(document).ready(function () {
$(.table).click (function ()}
(this).parent().remove();
[code]...
Basically I need a way to disable the postback.
I have a table setup in the database for users who are basically going to create a classified listing. How can I setup a diagram that would easily create a table relationship with the Users table, so that it automatically inserts the users username when they submit a new ad? If so, how? I've tried adding a UserName row to my table and creating a relationship with the Users table "UserName" row, but it wasn't accepting the relationship when I tried to save the diagram...apparently because the UserName row in the Users table isn't a primary key?
Also, one this is setup, what's the best way to provide the user a way to see a list of their ads and have the ability to edit them?
I have two tables with one common field. The field is the primary key in one table, and just a plain field in another. When I delete a record in the table where the common field is the primary key, I want to automaticaly delete a record in the other table that has the same data in the common field.
What is the most effecient method of doign this..triggers?
I have update statement.
UPDATE SPECT SET SRE = CLSS.NEWSID
FROM SPECT
INNER JOIN
student (NOLOCK) ON student.ID = SPECT.ID
INNER JOIN CLSS
ON CLSS.GID = SPECT.GID
ON CLSS.GID = student.GID
WHERE student.PID = '20201'
AND CLSS.PID = '20201'
AND SRE IS NOT NULL
However, student.PID and ClSS.PID need dynamically reach through from table CLSS to get each row of PID.
Here my table CLSS
[code]...
How to finish this one?