How to call javascript and C# function on HTML Button Click with C sharp... I want have a bouton for "back" screen... I tried it with two test :
[Code]....
But those test dont work.
i m a beginner with visual studio 2005.i have a input file on a page, this input file displays a bouton with a text : "browse..."i'd like to display another text on this button !
View 1 RepliesIf I declare a variable to reference a control, how can I later get the name or ID of the control that I was originally referencing in Javascript. For example, how can I get "pnl1" back when I do an alert(elem); with regard to the following declaration in javascript?
View 9 RepliesI have created a listbox that the selected items would remove by using javascript once I clicked on a server button. Below is the code I'm using
<asp:button id="btnSelected" Runat="server" CssClass="InputFormObject" Text=">" ></asp:button>
<script language="javascript">
function removeOptions(selectbox)
{
var i;
for(i=selectbox.options.length-1;i>=0;i--)
{
if(selectbox.options[i].selected)
selectbox.remove(i);
}
return false;
}
</script>
private void Page_Load(object sender, System.EventArgs e).......................
How to disable the back button of a browser using Javascript.
View 1 RepliesHow to generate a sequence like the follwoing
AAA
AAB
AAC
.
.
.
ZZZ
I want to store it in a database as a column.
I have a link button on my page which has both an Oncommand event and an OnclientClickevent.
The idea is that the oncommand updates some data via a postback and redisplays the page with the updates. The onclientclick event opens a new window.
The new window is named so there is only ever one instance of it.
What I'm trying to do is this.
Open a new window (if its not already opened) and ensure it is on top of the parent window. The new window is a smaller size so the parent window is still visible beneath. On the first occurance the new window opens above, however when I refocus on the parent to click again, the new window updates but does not refocus by putting it back on top.
how can we create Passing Arrays to Methods inc sharp
View 4 RepliesWhen I am building my typing tutor application the errors user made I want to show it in RED into his textbox. I created a LIST to have the index values stored but cannot figure it out how to retieve it and make them display as RED COLOR in UserTexbox.
[Code]....
I have a repeater that has a LinkButton in the Item Template. The LinkButton displays a UserControl that consists of a FormView. The UserControl has an HTML Element that when clicked hides the UserControl by simply change the display of the control from 'block' to 'none'. If the 'Close' span is clicked, the UserControl is successfully hidden, but afterward, the 'Edit' linkbuttons no longer postback.
View 1 RepliesI have a keyboard-controlled menu which I did with jquery (When I press down, it marks second option and so on...)
But after I select the option I need, I want to click enter to call the button's OnClick method as if the user really clicked it. Which means I have to do a postback.
how do I do that?
Within an ASP.NET AJAX UpdatePanel on my page I have a submit button which has some custom javascript validation applied which set a global _cancelGeneralSettingsUpdate flag depending on the results of the validation.In this case the variable _cancelGeneralSettingsUpdate is correctly set to false but the initializeRequest function is not called before the page attempts to postback via AJAX, causing the postback to fail. I need to be able to have postbacks succeed once the invalid input has been corrected and the user clicks the submit button again. Unfortunately I do not seem to be properly wired into the PageRequestManager pipeline once postback has been cancelled. If I refresh the page, everything works again, but cancelling the postback via args.set_cancel(true)
View 1 RepliesDisable a post back from asp.net i.e. buttons, links, gridview page index changing and sorting etc when a post back is already in progress. Target browser is IE 6+. I've written these 2 javascript I am not sure how to apply it on GridView Page Index changing.
[Code]....
But I am not sure how to attach the VerifySubmit to non prompting controls like gridview pager.
I've got an asp.net page that uses dynamically populated DropDownLists and OnSelectedIndexChanged events. A few days ago I found a defect where hitting the back button would load the previous page from the browser's cache, so the DropDownList would already have a selected index (hence the OnSelectedIndexChanged event would not fire properly as it didn't have the default selected index). I understood the issue and googled around. It's a well known issue that doesn't have an easy solution because of how the browser interacts with the page. After a bit of thought, I went with a trivial javascript solution to reset the ddls:
var gvTable = document.getElementById("foo");
if (gvTable != null)
{
[code]...
This worked well and I was happy. Until I tested it in IE. In IE, it appears to run the script, THEN load the cached values of the DDL. That is, I observe the DDL snapping back to the 0 index, and then suddenly dropping down to the previously selected value. I'm sort of at a loss here, I typically debug in firebug, but this works perfectly in firefox and chrome.
may I ask one seemingly simple question - I have a Javascript function that loops through my checkboxes(they're plain HTML checkboxes, not using the helper methods), and for every checked one it's adding its value to an array. So now, how do I get this array in my controller so that I can assign its values to the fields, i.e. object's properties?
This is my checkbox code:
[Code]....
and the script:
[Code]....
and here's the controller code:
[Code]....
Now, this langID should be assigned every checked checkbox's value, so I guess I'm missing a loop here too, it should go until some border that's gotten from the client script or something, but my bigger problem is how to retrieve the posted values from the javascript, something like PHP's POST["array"]...?
This Request.Form works fine when just one checkbox is checked, but now I need it to work with several checked..
I have the following code on my website:
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<asp:UpdatePanel runat="server" id="UpdatePanel" updatemode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger controlid="myButton_btn" eventname="Click" />
</Triggers>
<ContentTemplate>........
The javascript is running everytime I click the button. However, even though my subroutine updates the session variable after clicking the button, I always get the same alert. In other words, the same javascript is run after postback, and it is not updated. I am positive that the session variable IS being changed.
I have an ASP.NET page that contains two div's. Both have search fields and a search button contained within each of them. When I first come to this page, Div A has the class 'SearchDiv' while Div B has 'SearchDivDisabled'. These classes change the appearance so the user knows which search type they currently have enabled.
When Div B is clicked, JavaScript changes it's class to 'SearchDiv', and changes Div A to 'SearchDivDisabled'. This all works like a charm. The problem I have is when a user changes to Div B, clicks Div B's search button (which obviously redirects to a results page), and then uses the browser's back button. When they return to the search page, Div A is enabled again, and Div B is Disabled, even though they last used Div B. In the search button event handler I set the class attribute of the Divs before I redirect, hoping this will update the page on the server so when the user returns, their last-enabled Div will still be enabled (regardless of which one was enabled when the page was first visited).I believe this involves the ViewState, but I'm unsure why the class attribute is not saved so when the user returns to the page it is restored.
Edit: Here is the button event handler code:
protected void RedirectToResults(int searchEnum, string resultPage)
{
ShowContainer(searchEnum);[code]....
RedirectToResults() is called from the actual button event handler with the enum representing the selected search panel and the results page url. SearchContainers is a dictionary mapping an integer to the search Div. The important code is the last line, where I'm updating the selected search container with the 'active' search class, rather than the disabled one (which I assign to the other div(s) )
Additional Update: I have been battling with this issue for the last couple days. I was sort of able to get the following code to work (in page_load):
Response.AppendHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1.
Response.AppendHeader("Pragma", "no-cache"); // HTTP 1.0.
Response.AppendHeader("Expires", "0"); // Proxies.
But this really isn't a solution, as everything else that gets cached correctly is lost, which leaves me worse off than when I started. Everything else seems to persist fine, it is just the class of the div that is causing me struggles.
Edit: Just wanted to update this for anyone else that comes across this. While I believe there is a solution here with setting the cacheability of the page to force the browser to postback, I could not get it working 100% with all browsers (primarily Firefox was giving me fits, which is a documented bug). I do believe the cookie solution would work, but I felt that may be a bit more complex than necessary for just trying to store the state of a couple div's.
What I ended up doing was tying the div's class to the state of it's correlating radio button (there are radio buttons next to the div which allow the users a more visual way of enabling search panels). I noticed these radio buttons retained the correct checked value when the back button was used, so I could guarantee they would indicate the correct div to be enabled. So in JavaScript's onload I check which radio button is enabled, and then adjust the classes of the search div's accordingly. This is a pretty big hack, but has worked 100% across all browsers, and only took about 10 lines of JavaScript.
which is the better language in terms of coding, proficieny if we compare between VB.Net and C Sharp.
View 7 RepliesWhat does the underscore mean in C Sharp?
I saw a program,
Csharp Code:
Class Metals {string _metalType;public Metals(string type){_metalType = type;Console.WriteLine("Metal: " + _metalType);}}
What does the _ (underscore) mean in it?
Does that mean any static variable or something else?
Is it possible to manually fire a AJAX postback from Javascript.
View 4 RepliesIm using asp.net c# (webforms) I want to add a back button to my page. (you land on this page if you incorrectly fill in a form). if javascript is enabled i want to go back via javascript, but if it is disabled i'll just do a response.redirect("~/home.aspx"). how can i implement this? is it 2 buttons? how can i hide the other in the 2 different states if so.
View 2 RepliesI need to save a value to a session variable from a javascript function, and then be able to call this value back from the Session into another javascript function during post back.
How do you do this?
I have an ASP dropdownlist with AutoPostBack="true" and I want to do some javascript client side which can stop the postback if necessary. However, I can't get it to stop the postback.
<script type="text/javascript">
$(document).ready(function()
{
$("#ddl").bind('change', function() {
return false;
});
});
</script>
<select id="ddl" onchange="form.submit()">
<option value="">Item 1</option>
<option value="">Item 2</option>
<option value="">Item 3</option>
<option value="">Item 4</option>
<option value="">Item 5</option>
</select>
so i have a lightbox in which pops up an aspx page with textboxes and two buttons (submit - disabled and cancel - enabled). I wanted to enable my submit button ontextchange. it works fine when opened separately (not as a lightbox) but when i let it run normally with the lightbox function everytime ontextchange gets triggered the whole page refreshes disabling the lightbox.
<asp:TextBox ID="textBox1" runat="server" OnTextChanged="OnTextChanged_AttributesEdited" autopostback="true">
protected void OnTextChanged_AttributesEdited(object sender, EventArgs e)
{
btnSubmit.Enabled = true;
}
now if i take out the "autopostback=true" it then will not trigger the the ontextchanged. was wondering if is it better if javascript will be the way to go for enabling the button or is there a way where i can prevent the postback when ontextchanged is triggered?
I am unable to show message using msgbox.show method in c sharp which we can use in Vb.net.
How to implement such thing in c sharp