Web Forms :: Accessing Client-side Table Rows On Server?
Jul 23, 2010
I have a table that the user can add rows to through javascript by clicking on a "add rows button". In each row there are two columns one with a dropdown list and the other a text box. The dropdown list is populated with data through a sub on server side code.I need to be able to insert the data from each row into a table but I'm unable to do this. I clicked on my "add rows button" to add several rows and then did a test to see how many rows the table was returning on the server side and it did not include the five rows I added .. only the header row.If there is a better way to allow users to dynamically add rows to a table and then access the dynamically created table on the server then I'm all ears!
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Feb 23, 2010
The idea is that a pure html table will be generated on the client side. (using jQuery to add dynamic new rows to the table when the user clicks a button). These rows contain textboxes, dropdownlists, checkboxes and other input controls. When the user clicks a button, a PostBack is triggered in which I need to access this data from the table on server side, validate it and perform other actions on it.
I'm able to perform the client side and access the table data on server side by adding runat="server" to the table tag. However, I only see the initial table rows (not the ones added through JavaScript) and I have troubles retrieving the different inputs from the rows. put me in the right direction?? Or someone offering a better solution to the problem?
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Jul 19, 2010
I am trying to set a hidden type value to x on Server Side and then access it with Javascript. I have tried multiple ways to accomplish this.
At the basic level this is what I am trying to do.
Aspx page
<asp:HiddenField ID="HidRowNumber" runat="server" />
CS Page
In IsPostBack
HidRowNumber.Value = EFileRowNumber.Text;
Javscript
var status = document.getElementById("<%= HidRowNumber.ClientID %>").value;
When I am debugin it say it HidRowNumber's Value has changed to x but when I access the value with JS it always returns ''.
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Aug 18, 2010
I have a repeater which contains a table. I am giving the user the ability to add a new row in the repeater by adding a new row to the table. As I am very new to jQuery, can someone give sample code?
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Jan 10, 2011
I created a aesthetic control that creates two lists in seperate div tags organized with a table for each. The control always the user to click on the img tag associated with each item to move it between the two lists. I am doing all the movement between the lists via javascript and want to have a good method for obtaining the values and storing them in two lists upon Postback. I thought of doing something like storing the indexes/classes in hidden values and them reading them to find the items but that seems messy. Also, thought there might be a clever way of traversing the DOM via FindControl() but not sure. Any input would be great.
One other thing is that this is not a composite control. All the tags are being rendered in the RenderContents() method. So I don't know if there is a way to even tack on a runat="server" attribute to an elem like I normally would if I wanted code behind access to an html element.
Here is the HTML that is generated. I don't think there is need to post the server side code since it does nothing more than generate the html at this point.
<div class="DualListPanel" id="test1">
<div key="test1_Unassigned">
<table class="DLPTable">
<tr>
<td>Item 1</td>
<td><img src="..." onclick="Move(this)" /></td>
</tr>
<tr>
<td>Item 2</td>
<td><img src="..." onclick="Move(this)" /></td>
</tr>
</table>
</div>
<div key="test1_Assigned">
<table class="DLPTable">
</table
</div>
</div>
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Feb 22, 2011
I have a table which contains asp radiobuttonlists (see below) for a survey. Once submitted the results are written to a database.I would like to use this same table for a similar survey, but the trouble is the question order needs to be different. The questions are the same, just in a different order. Is there a way (server side) to change the order of the table rows?
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td> </td>
[code]...
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Jul 14, 2010
I'm evaluating two options of accessing a server side data on client side. Little bit confused about the efficiency or may be you can call it as finding best approach to do it.
I need to access a server side data may be an integer value in javascript on client side. I know about two options to do it.Create a public variable or property on server side and set it to javascript variable on client side as below:
var value = eval(<% =value %>);
Create a asp hidden variable and set value in this hidden variable from server side and access it through javascript using document.getElementById().
Which is the best approach and what are the pros and cons?
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Nov 23, 2010
I have a user control which contains a CustomValidator which is used according to whether a RadioButton is checked or not (there are several RadioButtons, I'm only showing the relevant one)
<asp:RadioButton runat="Server" ID="RadioBetween" GroupName="DateGroup" CssClass="date_group_options_control_radio" />
[code]...
There is some client + server side validation code (the server side code does exactly the same thing and is skipped for brevity)
<script type="text/javascript">
function ValidateDateFields_Client(source, args) [code]...
There are two instances of this control in the page. When running the client side version it hits the wrong one (the version of the control which is disabled). You can see from the generated HTML both are correctly specified. I'm not sure how .NET works out which clientside function to call given they both have the same name.
<script type="text/javascript">
//<![CDATA[
var ctl00_MCPH1_QueryTextValidator = document.all ? document.all["ctl00_MCPH1_QueryTextValidator"] : document.getElementById("ctl00_MCPH1_QueryTextValidator");
[code]...
Do i need to add something in to scope it? What's the best way to achieve this? If I disable the loading of the second control everything works fine.
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Jan 6, 2010
If I have a standard HTML textbox
[Code]....
but got a readonly error.
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Aug 7, 2010
i can use escape() and unescape() functions by Client side easily, but the problem when i have use escape() method for peice of HTML , then i dont know how to unescape this piece of HTMl By Server Side not By Client Side. how i can unescape (escapped HTML) by server side?
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Oct 26, 2010
I have a hidden variable and its value is being updated using javascript(client side) which I make a call from server side code. After making the call I am not able to retrieve the updated value from Server side variable. I went through this forum [URL] but not able find a way how to implement functionality with IFRAME. I am trying to call the client side code and retrieve the updated value from server side in page_load event.
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Sep 20, 2015
Your example doesn't work, or I have missed something, I work on a website for information...
I have null in my variable ...
Protected Sub Submit(sender As Object, e As System.EventArgs)
Dim values As String = Request.Form(ListBox1.ID)
TextBox1.Text = values
End Sub
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Aug 27, 2010
I have created dynamic control with both server and client side events.. if i set client side event server side event is not firing.. I have created the link button which will validate and do some necessary actions.. Validation is working but click event of link button is not firing .. if we remove the client side event , server side event is firing.. how to avoid this.. I want both events..
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Apr 21, 2010
How could i call a javascript function in server side. I have to call the javascript function on the click of a linkbutton which inside a repeater control.
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Dec 9, 2010
I have a requirement in which I have to call a JavaScript function in between my server side event and in that JavaScript function code I have to set hidden field value and in next line of that same event i have to use that hidden field value.
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Aug 10, 2010
I have a Repeater and also a Button. If I click on my button a new rows need to be created to the repeater in client side (javascript). I am able to do this with server side, but want to avoid a postback. I am not using an Ajax Updatepanel control. Moreover I am using a table structure in my Repeater.
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Jul 20, 2010
What is the best way to reference controls from the clientside from within a TabPanel? I've tried using jQuery and javascript both has failed me. I've tired using the find method, but still no luck... SchoolSectionID refers to a div element within one of my TabPanel controls.
for (var a = 1; a < 4; a++) {
var SelectControlID = "";
var HiddenControlID = "";
[code]...
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Jan 17, 2011
I have a gridview with a template field of check boxes.I have my rows color coded in BLUE color in the gridview based on a database value on page load.Now I want a button on the page to loop through the gridview and select the the checkbox for the rows that are in BLUE Color without a post back.
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Jun 21, 2010
I have a simple issue that most likely is syntax related. I have a table ("myTable") that is dynamically generated at PageLoad and can be actively changed during run-time. One of the features the user is able to make use of is adding additional rows to the table, generated via Javascript. The user also has the ability to save the table (and it's changes) to the database via button. Upon selecting the button, I run a function that creates a two-dimensional array to store values (Row, column). After using the .FindControl function, I was able to get the client-side changes to each of the textboxes and dropdowns and populate the array with it.
After checking the information, it does in fact store into the array the value in the textboxes at the time of clicking the button. Example: Textbox loads with 200 in value, user changes it to 400, when button is selected the value stored is also 400. This works great, except for one issue... The additional rows.
When checking back in the array, it appears that the arrays size is generated by the table that is created at PageLoad instead of the table at the time the save button is selected. Example: myTable is created with 3 rows, user adds 2 more rows to the table, save button is pressed. The array displays 3 rows instead of 5 rows, however.................................
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Dec 9, 2010
I have a requirement of adding server side variables in client side and other way round. Because I need to set a value from client side using javascript and access the same in code behind page.
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Oct 17, 2010
Suppose I'm building a StackOverflow clone using webforms ASP.NET and jQuery. The Question page has a question, several answers, and comments under each. Requirements:Users can post new answers and comments, and edit existing ones, without postbacks. No UpdatePanels; the AJAX calls retrieve just the JSON they need, not HTML fragments. The page loads with all existing answers and comments in place (no javascript needs to run to read the page).
What I'm trying to figure out is how to do this without having to maintain two sets of markup (one that's bound on the client using some form of jQuery templating, and one that's bound on the server using traditional WebForms).
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Jan 5, 2010
I reordered some items in a listbox using Javascript. When I read the items in a postback in the code behind (ASP.NET), the order is in the original order. How do I get the same order as shown in the screen after Javascript manipulation?
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Oct 4, 2010
I m using site login Control in my login.ascx file and disaplaying login control in Div so if there is login link in page and i click on that then Login Div will popup which is site login.May i know how can handle error like username or password is incorrect on client side instead server side?
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Feb 9, 2011
I have to implement the print functionality on aspx page like on click of print image icon user will be able to get the print out of aspx page .aspx page will contain the server controls like textboxes , Gridview etc which one approach will be the best server side or client side printing ?
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Feb 4, 2010
I have set the ajax tabs disable on form load. ON button click, I want to enable the tab server side,not client side.
protected void btnEnableCostPetroleumTab_Click(object sender, EventArgs e)
{
TabContainer2.Tabs[0].Enabled = true;
}
But its not enabling the tab?
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