C# - Update A Grid Control Automatically With Database Changes From Another User?
Dec 17, 2010
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?
From a user perspective, I can list of users in a grid with some associated checkboxes. When I click on a checkbox, I want to update the database straight away. No buttons involved.
I am new to MVC.
I am trying to work out if I can do this by using a BeginForm that wraps around each checkbox. It appears not, but how can clicking on a checkbox cause a POST?
Or maybe I can use a JQuery click or change event on the Checkbox? But in a grid the id for the checkbox is repeated, and I cannot get it to work even with 1 row of data.
The code below does not work. If I can get it to work, I need to send an AJAX post to call the method on the controller with the Model.UserId and the checkbox value;
How to go about creating a grid/table that can updated at run time by the user and can also be printed and exported to Excel. I have the print function working and I know how to export datagrids to Excel. Im going to attach an example to explain more clearly what Im looking for. Is this possible with a datagrid?
I have a user control that has multiple instances on a single page.
Is it possible to have each instance use a unique ValidationGroup? I could expose a property, but I'm wondering if there's any way to do it automatically.
I've implemented this string format in my NavigateUrl to pass a dynamic querystring depending on the clicked item!
but you see the first part in the string format where it says "~/PLayer.aspx" i want the user control to automatically change this part according to where it's placed!
I have a user control, that has an update panel and update progress control in it.
I use this user control in more than 1 location on the same page.... problem is, when ucA posts back, I see the update progress control for both ucA and ucB. I assume this is because it is a user control and the update panel and progress are named the same?
Either way - how do I make it so that the update progress only displays for the proper user control?
I've exempted the irrelevant bits of code. Essentially, I am trying to change the URL of an image control inside of an update panel inside of a custom user control from a function called inside an update panel from my main page. Using UpdatePanel.Update() isn't working: I end up waiting for the next full page POST to occur before all the updates I make to CustomControl from buttons within the main page's update panel are visible. I verified that Update() was being called via the debugger: there are no issues in that department.
Here, you can see Custom Control and the Button declared. The button is in an update panel to avoid giving a full POST and causing the whole page to reload.
This control stores images within their own seperate update panels because rerendering the images is very slow (it requires processing arrays of millions of datapoints) and the user only ever needs to modify one image at a time. I'm using Image1 as an example.
actually i came across this senario for new project where userstatus must change to log off when ever he do fallowing activity.I have maintain user status when he log in to web based system.Activities are if
1.user click log off
2.or user click browser close button or close brwoser tab.
3.or Fource fully shut down his Pc,I am able to get first 2 but not the last one.I googled it but not get any satified ans for that.I m looking for guidens for this.
i placed my grid control and FromView control in the same page, the problem is when i click on the "update" in the grid control, the field validation control in my FrormView get excuted and the page would not post back to the server.
How can i update the grid control with-out posting back the Formview.
I used asp.net server side control to display and modify data in database, the control is just like this one:[URL]what I want to do is after I click the "edit" button it will display a "edit" ui, and I want everytime I modify the data in the text box, asp.net will automatically click the "update" button for me to update the data i entered.
I tried to call the event handler, but failed.
There is a update command in asp.net, and how to programmatically call it ?
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!
Basically, I have a user control with a set of input controls such as textboxes and radio buttons. It also has a button along with these controls. What I want is that when the user clicks this particular button, the data entered in the input fields must get updated into a grid in the parent page.
I have created 3 tabs in first and second tab DIV I have Asp.net FormView, on Second tabs I have Asp.net GridView. On GridView we have edit link on each row of grid. Now issue is that when i click on edit link of grid Template of grid will change to edit template but tab automatically goes to first tab. I need it should remain on second tab where grid is there I try to use select on clientclick My code as followsThis is under document ready
[Code]....
This is under another script
[Code]....
This is grid in aspx page Where you can see on line 18,19,22 and 23 I am calling onclientclick select()
I am dynamically loading user controls into my main page on button event.The user control has a textbox and a gridview When i enter data in textbox , the autopostback event fires and loads data into the gridview. when i load another instance of user control and do any post back the gridview data is not persisting.Until and unless I bind the data, gridview is not having any data after postback.This is creating issue when I al updating a row in gridview as data is not persisting after postback.
In my project, I need to create a user control to handle the sorting and pagination of all the grids in the application. The grid however will be different in different pages with different formatting.
I am able to do this by exposing a property from user control which takes gridview as the input.
then in page load, i bind this grid, and assign the sorting and paging event handlers to this gridview variable.
This way I am able to do the sorting and paging, but the problem is I have to bind the grid in all the post backs, and then in the sorting and paging events.
So when a user sorts, I have to bind the grid twice, once in page_load and then in sort event of user control.
I can store the first set of records in viewstate and bind that in page load, but is there any other way, so that i dont need to bind the grid in all post backs but only inside of not postback.
i created a user control and place a button on it.i drag dropped the user control on a aspx page and wrote the grid load and button clicks in the
user control.now i got a requirement to use the same user control grid and button to again use on the same page.however the data populated will be different and the button click functionality will be different.how can i reload the different data on the second grid as i had already wrote the code in the first one
In a ASP.NET application I have a paging RadGrid which shows up textbox in each row. Outside the grid, there is an OK button to save the content of all the textbox. If user changes text in any one or more of the textbox and without clicking on the "OK" button, tries to move to a different page number (of the grid by clicking on the page number), he should be prompted for confirmation of save or cancel the changes.
I am guessing that one can write a Javascript function which would look for any form input control (textbox in my case) and detect changes and If there are changes, would prompt the user. However, I am not sure where I can call this function from?
I am using RadGrid but I guess this should be applicable to GridView as well.
I have a user control which contains a basic shopping basket item counter. This just writes out some html to a literal in the controls Page_load method.
I have other controls with "Buy" buttons which add an item to a shopping cart object held in a session. The basket counter get the totals from this object.
When I click the Buy button how do I update the basket counter at the same time? If i refresh the page the counter is accurate. Is there a way I can run an update method inside the basket control?
I'm using Umbraco so have master pages. I've tried to just use Page.FindControl but this always returns null.
is there an easy way to update a user control from another user control? i have a input box and a submit button. the user inputs a code, hits sumbit and based on the code, points are applied to thier score (another user control). the points are applied to the score in the database but don't show up on the page display until i hit refresh. is there an easy way to update the control on submit?
protected void btn_Add_Coupon_Click(object sender, EventArgs e) { try { SqlDataSourceTEST.DataSourceMode = SqlDataSourceMode.DataReader; IDataReader Reader = (IDataReader)SqlDataSourceTEST.Select(DataSourceSelectArguments.Empty); if (Reader.Read()) { int iPoints = 0; iPoints = (int)Reader["Points"]; if (iPoints > 0) { Profile.TimesVisited = Profile.TimesVisited + iPoints; lblcoup.Text = iPoints.ToString() + " have been added to your score!"; } else { lblcoup.Text = "Coupon Code Not Valid"; } } Reader.Close(); Reader.Dispose(); } catch (Exception ex) { } }
I have a user control at the top of my page which shows name of user.when I update user name on my page and submit the data , all data is updated but at the top in user control the name is not refreshed it shows previouse one.
I created timecard for a website and I would like to automatically clock out the user everytime when user logout or close the website. Is there a control for that? And if yes, where do i have to put he code at?? I think it should be in the code behind of master page... and on the Page_Load function
