I want to perform some functions on a ListBox when I click an HTML button but I to avoid postback to minimise the server round trips....
protected void Assign_Button_Click(object sender, EventArgs e)
{
Button clickedButton = sender as Button;
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when i click on button then postback happen but i stopped the postback. my code is follows.
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here ShowDiv() function return false. another thing i notice that when i comment all the line in function ShowDiv() then postback is not happening. i just do not understand if i generate a div and add to page from javascript then why postback happening. tell me the solution to avoid postback when i will generate div from any function.
I have a listbox on my site that is populated with data. I then have a textbox that is used to enter a search phrase and with each letter that is added the listbox is narrowed down or repopulated using javascript. I use one listbox to store all the items and a secondary showing the listing results. This makes it east to check against all items and then populate the second listbox with all the results according to the search.
Currently this process can cause a delay in updating the listbox (eg when the textbox is emptied all the items need to be repopulated from the listbox with all the data).
What is a quick and efficient way to perform this listbox search?
Is it possible to execute two or more client side functions with a single button click? (I have written 3 functions in my .aspx page and need to validate on client side)
send me sample code with 3 client side functions using single button click.
I have a listbox which populated from using a datatable. I have a Add button in my page. On clicking the add button I want to insert a blank row in the listbox. This can be done easily by
ListBox_Admin.Items.Add("");
after this is done I want to select this item as in setfocus on this item.How do I do this.
I'm trying to create a class, DataCommon, to contain all my SQL Data manipulation functions. I've created a Subroutine called Init that initializes a SQLDataAdapter:
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From my other classes I am creating an instance of DataCommon, calling Init, and calling another subroutine in DataCommon that pulls data from SQL and loads the data into my dataset. This part is working great -- no problems at all. I'm loading three different Datatables in the Dataset with no issues.
At this point, I'll perform my various manipulations on the datatables -- add/delete/modify rows -- again with no problems. All of this is creating postbacks...and this is where my problem begins. After I've done all my manipulations to the data and am ready to update my SQL tables, I have to re-initialize my SQLDataAdapter. I thought I could do something like:
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But I get the error: Exception inserting Class. Thread was being aborted.
In my initial data load from SQL, each datatable is getting loaded from a single SQL table, so I was hoping to use the autogenerated Update/Insert/Delete statements by the SQLDataAdapter. As a test, as soon as I filled the dataset initially, I added a new row to one of the datatables and used the SQLDataAdapter.Update() method before a postback occurred, and it worked perfectly.
So, with all that being said, I guess my question is, how do I reconnect the table mappings between my SQLDataAdapter and dataset to autogenerate the updates after a postback occurs? I've tried researching this, but I get confused after reading about FillSchema vs TableMappings vs everything else I've read about.
I'm being really thich today. Can anyone tell me why I can't fire a client side then server event from this code:
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I have 5 dropdpwnlist in asp.net page.. the 5th dropdwpnlist will show data based on 4th dropdownlist. and 4th dropdwpnlist will show data based on 3rd dropdownlist. and 3rd dropdwpnlist will show data based on 2nd dropdownlist. and 2th dropdwpnlist will show data based on 1st dropdownlist... All dropdownlist has auto postback=true.. so it cause postaback each time.. i want to avoid postback coz it refresh all page again and again and shows data.. coz my aplication is in hosting server..
View 5 RepliesI've got popup (using javascript) working in a kind of gridview. When you click a button on one grid, it displays a popup window containing another grid of information, based on the row clicked in the first grid.
This works well... I've enabled editing in the grid that is popped up. When you click edit though, the popup window disappears. If I click the display button in the first grid though to bring the popup window visible again it displays, and is now in edit mode.
Is there a way to make postbacks in the popup not close the popup?
This is my aspx pages button properties:
<asp:Button runat="server" ID="cmdConfirm" Text="Select
Customer"
ValidationGroup="ValidateId" Height="26px" onclick="cmdSave_Click"/
Now on my Page_Load I have:
protected void Page_Load(object sender, System.EventArgs
e)
{
Name = Request.QueryString[0];
LoadCustomer();
cmdConfirm.Attributes.Add("onClick", "update("
+ Name + ");");
Conn.Close();
}
This is my button click for Select Customer button.
protected void cmdSave_Click(object sender, EventArgs
e)
{
RecordChanges();
}
Now I must run cmdSave_Click() before the cmdConfirm.Attributes.Add even though both is for same button anyway. I know that client side script will try to run first but I must run the cmdSave_Click event first to save the data. Aftre that cmdConfirm.Attributes will send the Name to the next page using a Javascript function where the stored values(stored using cmdSave_Click) will be used. I have no other choice. I cannot run the Javascript function first as it will happen before the data is stored. And also I cannot use another page as all has to be performed in one page so that user will not have to click Save twice. Can anyone tell me How I can delay the cmdConfirm.Attributes.Add until the cmdSave_Click is performed.
I have an AsyncFileUpload with an image control to show a preview of the pic that is uploaded. Everything works fine, however on the postback from the asynchFileUpload the page jumps to the top of the page and then after a second or two it goes down to the proper scroll position. What can I do to avoid having the page jump to the top and then back down again on the postback ?
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i have 4 dropdownlist..state,district,place,product..where we have to select the product depend on state ,district ,place and product and there is search button for search particular product where iam using gridview to dipslay particular product deatails. i do not want to do auto past back eventfor page when i select dropdownlist...i tried using ajax but still i cant get through..i tried this code. how to use ajax for 4 dropdownlist & 1 button so that i can dispaly product deatails.
View 3 RepliesMy web page has more contents and have the vertical scroll. when i was on the middle of the page i click the button (or any postback process) then the click event do some process on postback. after this postback event the page is jerking and moved slightly to top automatically. this is the issue. it should be in the same place on every postback. how to fix the vertical scroll in the same position on postbacks.
View 2 RepliesHow to avoid Model popup disabled on postback? I have a dropdown list in model popup control with autopost back="true". On post back am getting customer name. But on post model popup get disabled
View 2 RepliesI have a couple of fields on a form that will be populated with default values. I would like to put a button that will allow me to reset those fields to their default values if they have been modified. However I would like to avoid the postback so that I don't have data being sent to the database. Is it possible to add a javascript hook such that when that button is pressed I can pull the default values and populate those fields in javascript?
View 1 RepliesI am using ModalPopupExtender of Ajax Control Toolkit(v2.0.50727) as shown in the following way.
The problem iam facing is whenver i try to show the Popup ,Postback of entire page is happening which is cauisng lot of performance issues.
how to avoid the post backs when using ModalPopupExtender ..
<asp:UpdatePanel
ID="upmodal"
UpdateMode="Conditional"
runat="server">
<ContentTemplate>
<asp:Panel
ID="pnlCmnSrc"
runat="server"
CssClass="modalPopup"
Style="display:
none">
<table>........
I have a Username and Password field on webform and a Submit button.Username ia validated through database on button click.Each time when i click on submit button and if Username already exist then my password gets to be removed due to postback.Please give me some solution so that when i just defocus my username field it will automatically check and display message if it exists.Please donot give Textbox ontextchanged event with update panel in conditional update mode because it will not work for me because i am using devexpress tools on my webforms.
View 1 RepliesCall JavaScript function on GridView Row click using jQuery in ASP.Net works great!, but if I want to have a first column with an image button so the user can click only there to select a row it always produce a postback when using a button field, how can I avoid that postback while having an image button for the selection click in the gridview?
View 1 RepliesI have a button on my web page and i would like to know if its possible to aviod consecutive clicks. Lets say i have a submit button or another button which inserts into db. And i figured out that there are two records in the db. So i would like to avoid consecutive button clicks.
View 3 RepliesI am using datalist and used custom paging for that but on page index changed there is full postback..because i am sending the values through querystring just have a look to this link
[URL]
i want to remove this postback...
I created my page with asp dropdown. On selected index changed I am seeing postback operation on dropdown. I couldn't avoid postback operation of asp dropdown with updatepanel also.
IS there a another way to avoid dropdownpostback operation.
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</contenttemplate>
</asp:updatepanel>
From one of my webpage, I am opening up another form as ModalDialog, and on this form, I have a Grid, Treeview and some other controls.
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I have some code on click of Treeview Node, I fill out other data in Grid on click of Treeview Node.
Now the problem is when page posts back ( on click of Treeview Node ) , page flickers once during filling up data in Grid.
Basically whenever page.ispostback is true, page flickers, Now I want to avoid this.
I have to keep "SmartNavigation="false"" on this page because of some of the Treeview Problems.
Specifically on Node click of Treeview and on Update button press.
After postback if user presses F5 or refresh duplicate values are inserted.
View 1 RepliesHere is the sample code am trying.
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />
<div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional">
<Triggers>
<asp:PostBackTrigger ControlID="Button1" />
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This upload is working. But why the page is getting refreshed? this is not partial post back and instead it 's full post back. i have read the articles for the fileuplaod with issue inside the update panel. is there any way to achieve this asynchronous upload on button click?
I don't want to use the Ajaxtoolkit Asyncupload because that will upload (Ref : [URL] ....] the moment when we seelct the file itself which i don't want to do that. i need to do on the button click event.
I have a Input button of type submt. This button on click POST the form to another controllers view.
I want to cancel the POST (Submit) action when a specific radion button is not selected from a partial view in that form.
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