Access client side code from code behind. Is there a way to do this? How can i do this?
I have an object embedded on my web form. I need to access this object and change its properties at runtime.
How can i do this?
How can I access server side functions from the HTML code? See the following code:
<a id="Taggloud" runat="server" class="lblTagCloud" onClick="TagOnCloud_Click">click</a>
Here I'm calling the tagonCloud_click function that's defined in server side(code behind). How can i call that function?
I have a web app that needs to do two things at the same time. After a user clicks a button on the site, a javascript function needs to execute and while thats working I need the server side code for the button click to execute without waiting on the client side to finish.
To be more specific, the client side function takes about 23 seconds to complete, and while that is running the server side code promts the user for printing a document. So I need the javascript to run "in the background".
If I have a standard HTML textbox
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but got a readonly error.
in a form i have a buttoin, when click both OnclientClick and postback should happen. on clicking the "Email" button a client side "mailto" tag should do the work and pull a new message window on the client's machine.
whereas, the email addresses should be invoked by the post back. so , when clicking the button the server side post should happen and on return the client side script should be invokded with the values read during post back, and populate all the email addresses.
i need know how to first do a server hit take the values and then execute the client script with those values without using AJAX
If I have a standard HTML textbox: I can retrieve the value using Request.Form. But how do I go about populating this textbox from the server-side? I tried Request.Form["txtTest"] = "blah"; but got a readonly error.
View 2 Replies<asp:RadioButtonList ID="rbEmployeeGroup" runat="server" RepeatDirection="Horizontal"
AutoPostBack="true" OnSelectedIndexChanged=" [Call java script to check first] then rbEmployeeGroup_SelectedIndexChanged">
<asp:ListItem Selected="True" Text="Employees" Value="employees"></asp:ListItem>
<asp:ListItem Text="Groups" Value="groups"></asp:ListItem>
</asp:RadioButtonList>
How to call the javascript function before call bEmployeeGroup_SelectedIndexChanged this code behind function?
I have code on my server which works very well. It must crawl a few pages on remote sites to work properly. I know some users may want to abuse my site so instead of running the code which uses webclient and HttpRequest i would like it to run on client side so if it is abused the user may have his IP blacklisted instead of my server. How might i run this code client side? I am thinking silverlight may be a solution but i know nothing about it.
View 4 RepliesIs there a way (except for using JS on the html view) to tell asp.net to run a certain code on client side (instead of server side)?
View 4 RepliesI am a quite new to web development and I am trying to do some small form updates without causing a postback. For example making a control visible when a drop down list is changed.
I have so far come across some features that achieve this like the RequiredFieldValidator inside an update panels. However, these are specific to a single task.
What are my options to achieve these client side updates in Visual Studio? At the moment I don't know any JavaScript, so I would prefer another solution if it exists.
How can I get getTimezoneOffset(); value from the client side in codebehind(aspx.cs file) on Page_load event?
View 2 RepliesI have a question, I am writing a user tracking class that needs to obtain the screen resolution of the user. I have the javascript all written and it is working along with a hidden variable ( used to set the javascript vars so I can access them server side ). What I am running into is when I try to access the value of the hidden variable on Page load it's not there, but If I cause a post back I can get it. How can I access this data on page load? There is no guarantee that the user will ever cause a postback, some users just look at the home page and leave.
View 1 Repliesgetting a particular datatable values from the server to the client using javascript.
Ex.In my class which is Countries.aspx.cs I have this somewhere on my code say on the page load.
DataTable dtbCountries = Repository.GetAllCountries;
my dtbCountries now contains this record
ID Country
1 HongKong
2 Japan
3 Korea
In my webform I want to get the values of my dtbCountries using javascript
<script type="text/javascript">
// my code here to get the dtbCountries values
</script>
What should I do? Or what's the best thing to do to expose my dtbCountries in the client.
I am having issues correctly setting up reference to javascript code to a custom validator.This is my javascript code in the .aspx page.
[Code]....
And here is where I add the Client Validation to the customer validator in the code behind.
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The validation is if there is a value present in the first text box then the second text box is required.The page throws an error when the validation should fail, but if I ignore the error the validation works correctly.Do I need to move my javascript to the code behind as well?
let me knw abt the validations in asp.net...
View 7 Repliesi am not sure if my design have flaw but would like to know what others have to say, i am in a situation where i am trying to acheive two things in one click.
using : asp.net web form
i have a web form with few textbox and a gridview control and a button.
if i click on the button i am executing two things
1) asynchronously get data from server to client (working great) and able to display the data in the textboxes.
2) same click i want to bind the gridview.
[Code]....
recap:
1) jquery script execute asynchronously to get data from server to client and display in the textboxes
2) server side code to bind the gridview.
PROBLEM:
if i have onClientClick="return LoadDataById(); then it executes ONLY ajax code and does not execute server side but if have onClientClick="LoadDataById(); then it executes client and server but textbox value wipeout. (the textbox value popuplate through ajax)
i appologise if thisis a silly question but i just want to be completely sure something is not possile before i tell this to my manager.
i am a WinForms programmer by trade, but i have put in charge of making a web site for our sales team, and web development is a new area for me. the web site is written in ASP.NET, C# code. it is finished, however they are complaining that there are too many page refreshes.
first of all, we have an SQL server with all our data in it. on the main web page, the user must select their country of interest from a DropDownList. when they do this, all our customers from that country are displayed in an html table, generated by a Repeater. i have set AutoPostBack on the country DropDownList to true, so each time the user selects a different country, the SelectedIndexChanged event handler is called, and in here i generate a new sql statement with the selected country, and re-bind the Repeater.
There are also a few other DropDownLists that do other 'filtering' stuff. for example, one DropDownList selects whether to display customers whose license expires soon (within a week), and another DropDownList filters the customers who currently have an open support case. All the DropDownLists have their AutoPostBack set to true, and in their SelectedIndexChanged event handler, i work out the sql based on the values of the DropDownLists, and re-bind the Repeater.
the problem with the above is that each time the user selects a different value from the DropDownList, the page refreshes, clearly because the AutoPostBack is set to true for them all. so to stop this i need to set AutoPostBack to false - but then of course the SelectedIndexChanged event handlers are not called, and so i have no place to rebind the repeater with my new sql statement.
so what i really need, is to be able to set a DropDownList's AutoPostBack to false, and handle the rebinding of the Repeater in some client-side event, which does NOT result in a postback. the Repeater will be bound by some sql, which is generated by the values in the DropDownLists (eg "SELECT * FROM custTable WHERE [Country]='" + CountryDropDownList.Text + "'"), so in this client-side event i need to be able to reference the asp.net controls.
I know that I can receive an javascript object from the server via ASP.NET AJAX using Json. But I am not sure how can I send an javascript object from my client-side javascript to my server-side code. And if I can, how can I extract this object in my server-side code and access its members?
View 1 Repliesim tryin to upload files to the database using the FileUpload. the upload take place. when i download the file again ( word document, excel document.. a text document (.txt), a winzip file) , it turns that the file is corrupted and cannot be opened.. an image file or an mp3 file doesnt present this problem. my application is developped usin vb.net 2010 and sql server 2005 as the database..
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I have a multiline textbox that by default, is set to ReadOnly. I would like a button on the page to change the control to allow it to be edited. I would like this code to run on the client side because the page renders slowly and I'd like to avoid the post back.
The problem I'm having is the javascript code that I wrote to remove the readonly attribute appears to have no effect. I posted a stripped down example that illustrates the problem for your review.
[code]....
I am using VS2008, SP1. I am unable to put breakpoints in my client side javascript code. Wherever I try to put the breakpoint, I am getting the message: "This is not a valid location to put the breakpoint". I have the js intellisense working fine. I also unchecked the two "Disable Debugging" checkboxes on IE. Due to this problem, I am unable to debug the js in VS 2008.
View 3 RepliesI have a text box in which I want only digits (either decimal or whole numbers). I have applied Required Field Validator and Regular Expression Validator on it.I have an Image Button, by clicking on which, I want this validation to be performed. But when I build the code, and clicks on Image Button, these validators do not work and I am redirected to the server side method of Image Button and after completing the execution of server side method, control comes to these validators and client side validation executes.I am fed up by finding solutions on Google and unable to find any solution.Please tell me of anyone of you know the solution that why server side code is running first and client side validation is executing after server side code execution.
View 11 RepliesI have to access my html control and get its value from my server-side code. Is there anybody who could suggest how I could do it?
My html control is very simple: <input type=text>
But the thing is: I can't make it <input type=text runat=server> cause in this case my jquery functionality (datepicker) does not work.
While working through some demos today I managed to trick VS 2008 somehow and I cannot access any server side events or variables in the code editor window. Hopefully
this screenshot will demonstrate exactly what I am missing. No matter what control I pick from my source I get the same drop down items overhead. What is quite weird is that when I drop new server side controls onto the source editor I can set the tag attributes for the events, but when I double click that event there is not an automatic created event handler with the same name created for me. Also, on the property pages there is no events image button (the one with the lightning bolt). The only property page items which have the events image button (lightning bolt) are the ajax toolkit controls. Already tried the "import all settings - VB Default" to blast away everything and no luck..
I used TextArea in my page
<textarea ID="txtdes" class="DVS2LT">