Web Forms :: Triggering CheckedChanged Event In C#?
Jan 22, 2011I am working on windows form using C# language and I need to trigger the Checkbox's CheckedChanged event.
What code do I need to write to call or trigger this event.
Similar Messages:
Web Forms :: Checkbox Control In The Checkedchanged Event?
Mar 3, 2010I have a DropDownList with the visible property = false. When the user check's the checkbox I want the DropDownList to become visible. If the user unchecked the checkbox I want the DropDownList unvisible again.If there anyne who can help me. I'm using vb. I try this code in the checkedchanged event but didn't work.
[Code]....
Web Forms :: Event CheckedChanged Not Working On Uncheck Of Checkbox?
Feb 10, 2010Check box's event CheckedChanged is not firing when uncheck the check box :This checkbox will help in checking the checkbox list and whne uncheck it will uncheck the checkbox list.I am using AJAX for this page post backs.Here is the html code for check box:
<asp:CheckBox
runat="server"
ID="ckbAll"
[code]...
Web Forms :: Radio Button Event CheckedChanged Does Not Fire?
Feb 9, 2010I have a simple form with 2 radio button grouped. I´m trying to hide/show a DropDown Listbox with the event CheckedChanged, but this event never fires...
<asp:RadioButton ID="AgruparPorCategoriaRadio" runat="server" GroupName="CategoriaFechaRadio" Text="CategorÃa"/>
<br />
<asp:RadioButton ID="AgruparPorFechaRadio" runat="server" GroupName="CategoriaFechaRadio" Text="Fecha" />
AND THE CODE BEHIND:
Protected Sub AgruparPorCategoriaRadio_CheckedChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles AgruparPorCategoriaRadio.CheckedChanged
AnticipacionList.SelectedIndex = 0
AnticipacionList.Visible = False
TemasList.Visible = True
ActividadesGrid.DataBind()
End Sub
Web Forms :: CheckedChanged Event Not Firing When Checked Property Set On Page_Load
Jul 21, 2010I have a web form with two RadioButtons, both use the same GroupName, both have AutoPostback enabled and both have an event handler for CheckChanged. I use tem to show/hide a Panel further down the form which is contained in an UpdatePanel with Conditional Update set and with both CheckedChanged events in the Triggers collection:
[Code]....
Now, the problem arises when I set the Checked property of either RadioButton in Page_Load, which results in the even not firing for the button which was marked as Checked (the event for the radio button whose property was not assigned does get fired). In fact, upon inspecting the source there was no 'onclick' attribute declared for the input element that was marked as checked in the Page_Load, whereas the other RadioButton did have the 'onclick' attribute properly set.
The layout of the form doesn't allow me to place the radio buttons within the UpdatePanel, so that is out of the question. Is the behavior explained above normal? am I missing anything? Both events fire once the assignment to the Checked property is removed from Page_Load.
Web Forms :: CheckedChanged Event For Dynamic Checkbox Arrays In Updatepanel Not Firing?
Mar 22, 2010I am creating an array of checkboxes :
1. chkresponse = new System.Web.UI.WebControls.CheckBox[cnumber + 1];
for (int
i = 0; i < cnumber + 1; i++){
chkresponse[i] = new System.Web.UI.WebControls.CheckBox();
chkresponse[i].CheckedChanged +=
new EventHandler(chkresponse_CheckedChanged);
chkresponse[i].AutoPostBack =true;
}
2. thereafter adding them to a panel
Panel1.Controls.Add(chkresponse[n]);
3. then added the checkedchanged event:
public
void chkresponse_CheckedChanged(Object sender, System.EventArgs e)
{Label1.Text = "response";}
but the event is never fired. the panel is insdie an updatepanel.
Web Forms :: Event Is Not Triggering?
Nov 15, 2010I create one set it contain three column in the 1st row with seven texbox having the name with Amount and 2 column with textbox(7) as qty and 3 column as totalamount(7).in the !st row i i will add the amount by coding.Now in the quantitytextbox i enter the amount and press enter means i got this error
Multiple controls with the same ID 'txtamount7' were found. FindControl requires that controls have unique IDs.
My code
void amounttextbox()
{
int number = 7;
for (int i = 1; i <= number; i++)
[Code]....
Web Forms :: Event Handlers Not Triggering Any Longer?
Sep 14, 2010I've been working on a web form that has lost it's ability to respond to most event handlers, though code that I write in Page_Load still fires. No button click or text changed events will fire. This has been working for months, and suddenly stopped. I did a windiff comparison to an older version of the webform, and don't see anything suspicious.
View 4 RepliesC# - GridView 'CheckedChanged' Event Only Firing Once?
Mar 1, 2011I have a GridView, which features a a checkbox on each row (in a template field), where it calls a method upon checked changed (well, when they click submit - no auto post back)
My problem is, the checked change refuses to fire more than once - if I just change the check state of one checkbox in the grid, it works fine. More than one and it only fires the event once.
EDIT: Bit of code:
<asp:CheckBox ID="chkIncludedLocal" runat="server" Checked='<%# Bind("Included") %>'
Enabled="true" OnCheckedChanged="chkIncludedLocal_CheckedChanged" />
And in the event, I put a breakpoint right at the top to see how many times it fires
Forms Data Controls :: Gridview / Adding CheckBox In RowDataBound - CheckedChanged Event Not Fired - Page Lifecycle
Jan 5, 2011I have a page on which everything is loaded dynamically.
There is a Gridview (AutoGenerateColumns=true) and in the RowDataBound I check every column for a boolean datatype. If found I add a checkbox (autopostback=true) to the cell and register the CheckedChanged event.
The problem is, that I only get the CheckedChanged event, if I reload the grid in Page_Load:
protected void Page_Load(object sender, EventArgs e) {
LoadGrid();
}
But this is very expensive and causes that the db request will be executed twice. If I changed the code to what I want:
protected void Page_Load(object sender, EventArgs e) {
if (!this.IsPostBack)
loadGrid();
}
I get no CheckedChanged event.
Is there a possibility to get:
- Adding a Checkbox in RowDataBound
- Only "LoadGrid()" if it is no PostBack
- Getting the CheckedChanged event of the relevant row
Viewstate - CheckBox Does Not Fire CheckedChanged Event When Unchecking?
Aug 11, 2010I have a CheckBox on an ASP.NET Content Form like so:
<asp:CheckBox runat="server" ID="chkTest" AutoPostBack="true" OnCheckedChanged="chkTest_CheckedChanged" />
In my code behind I have the following method:
protected void chkTest_CheckedChanged(object sender, EventArgs e)
{
}
When I load the page in the browser and click the CheckBox it becomes checked, the page posts back, and I can see chkTest_CheckedChanged being called.When I then click the CheckBox again it becomes unchecked, the page posts back, however chkTest_CheckedChanged is not called.The process is repeatable, so once the CheckBox is unchecked, checking it will fire the event.I have View State disabled in the Web.Config, enabling View State causes this issue to disappear. What can I do to have reliable event firing while the View State remains disabled?Update:If I set Checked="true" on the server tag the situation becomes reversed with the event firing when un-checking the CheckBox, but not the other way around.Update 2:I've overridden OnLoadComplete in my page and from within there I can confirm that Request.Form["__EVENTTARGET"] is set correctly to the ID of my CheckBox.
C# - Find The Data Key On CheckedChanged Event Of Checkbox In ListView?
Jun 18, 2010I am using a list view inside that in item template i am using a label and a checkbox.I want that whenever user clicks on the check box the value should be updated in a table.i am using a datakeys in listview.on the basis of datakey value should be updated in the table. Query is:string updateQuery = "UPDATE [TABLE] SET [COLUMN] = " + Convert.ToInt32(chk.Checked) + " WHERE PK_ID =" + dataKey + " ";` also i want some help in displaying the result as it is inside the table.means if the value for column in table for a particular pkid is 1 then the checkbox shoul be checked.Here is the code snippet:
<asp:ListView ID="lvFocusArea" runat="server" DataKeyNames="PK_ID" OnItemDataBound="lvFocusArea_ItemDataBound">
<LayoutTemplate>
[code]...
AJAX :: CheckBox Inside Updatepanel CheckedChanged Event Not Firing?
Mar 11, 2011I have a checkbox, textbox and requiredfieldvalidator inside the updatepanel. Once user checks selects
checkbox I am enabling requiredfieldvalidator.
I have one more textbox, requiredfieldvalidator, validationgroup and Linkbutton outside updatepanel.
Strange thing is Checkbox checked event not firing in some cases,
1. Check the checkbox (which enables requiredfieldvalidator)
2. Click the Linkbutton (fires two validators)
3. Uncheck the checkbox (which should disable requiredfieldvalidator)
4. Click the linkbutton again (again it fires two validator, which should fire only one validator)
Note: The problem only arising when I add javascript block to linkbutton in page load event.
[Code]....
Dynamically Generated Radio Button Calling CheckedChanged Event
Dec 6, 2010I have a procedure that is generating some radio buttons and assigning a CheckedChanged postback event based on the level being passed through (up to 4 levels). When the first level is checked (radio button selected) the postback event rb_CheckChanged00() is called and a check is done to see if this item has any children, if it does, it will create more radio buttons and assign rb_CheckChanged01 to the CheckChanged event for these - This part is working fine.
The issue I have is when I select the second Radio Button that has been created (the child), it doesn't seem to go to the post back event at all. The page is posting back when I click on it but everything resets because it won't go into rb_CheckChanged01.
I know this info is quite vague but I am hoping someone has an idea on how the post back event works and if I am somehow using it incorrectly.
Forms Data Controls :: Button Event Inside ListView Is Not Triggering Correctly?
Mar 16, 2011I have a ListView (table inside) and it's first row are some TextBoxes for filtering actions.
In the last column I have a button that calls my Search function and filters the records according to the inputs.
[Code]....
My Search function for now only displays a text inside a Label at the top of the page.
When I load the page, I'm using ListViewPesquisa.DataBind() so it shows it's EmptyDataTemplate, but when I click the button inside the event isn't called at all. If I do put some data (any data) in the ListView and it shows it's LayoutTemplate instead, the event is called properly.
I can get around this issue by moving the filter line out of the table, but I'd like to know why is that the button inside the EmptyDataTemplate doesn't work.
C# - Event Triggering In Using Javascript?
May 10, 2010I've created two buttons using javascript; yes and no. I need to get the event triggered when the button is clicked.i.e... onclick=getvalue().
public void SetYesButton(string msg_button_class) {
this.msgbox_Yes_button = "<input type="button" value="Yes" class="" + msg_button_class + "" onClick="getvalue()";>";
}
public void SetNoButton(string msg_button_class) {
this.msgbox_No_button = "<input type="button" value="No" class="" + msg_button_class + "" onClick="document.getElementById('pagedimmer').style.visibility = 'hidden'; document.getElementById('msgbox').style.visibility = 'hidden';">";
}
Programmatically Triggering Selectedindexchanged Event?
Apr 24, 2010My application allows a team captain to enter the results of an 8-ball game then submit those results. In doing so the captain is brought to the next page to enter the results of the 9-ball game. But, there are games every week so there is a dropdownlist on both of the forms allowing the captain to select which date he/she is entering the information for. There are 14 weeks with the date displaying as the text value.
After the user selects the appropriate date and enters the results of the 8-ball game he is brought to the next form but he has to select the date again. Both forms ddl selectedindexchanged event enacts a whole lot of code which is required to allow the processing of the data.
I can capture the selected value from the first form and get it to the next form for 9-ball and even set the selectedvalue correctly, but that doesn't trigger the selectedindexchanged event. I want to put some code in the pageload to pass the selectedvalue to the selectedindexchanged event and trigger it to run with that value.
Is this even possible? I haven't been able to google my way out of this perdicament despite many hours of effort. And I know that users are going to spend 20 minutes entering all the data before realizing that they forgot to select the correct date in the ddl. What to do?
RadioButton Client Event Not Triggering?
Apr 22, 2010I'm dynamically generating radio buttons in my code behind and assigning javascript to them as they are created. This javascript will change the value in a hidden field for when a postback is eventually triggered (autopostback on the buttons is disabled). I am using the exact same method with ASP ImageButtons and it works fine but when I do it with the radio buttons the event never triggers the Javascript. I suspect that I may be using the wrong event name but I have tried several (onclick, onCheckedChanged, etc).
Here is a sample of the VB.NETcode - how come this works fine with my button but not my radiobutton!
//This is my hidden field
ClientScript.RegisterHiddenField(Me.UniqueID & "_someVariable", "")
Dim radDefault As RadioButton = New RadioButton()
radDefault.GroupName = "radio buttons"
radDefault.AutoPostBack = False
//This adds the Javascript to set the hidden field with an onClick event
radDefault.Attributes.Add("onClick", "document.forms[0]." & Me.UniqueID & "_someVariable.value='0';document.forms[0].submit();")
The code is simplified as the button generation is actually through an iterator but the same properties are given to each generated radio button.
C# - Event Triggering Without A Direct Connection?
Feb 2, 2011In my ASP.NET app I have a control in the master page that raises an event Foo on certain occasions / interactions.I also have a couple of pages that have another control that must re-bind itself when this event is fired.Unfortunately the only way I can see them communicating between each other is by creating a long event chain (deriving a new MasterPage MasterPageSuperDuper, attaching an event handler to Foo's event in the user control, and then referring to this event in the masterpage from the control present in a couple of pages - basically using the masterpage as a control center).
View 2 RepliesAJAX :: Button Not Triggering Event?
Jun 28, 2010 look at the code below.btnCustomDateOk dosen't trigger postback at all.it's supposed to run a date range validator (javascript) first and if succeed then triggers a server-side event.(I've been testing around and when I replaced the button with a linkbutton, everything ran perfectly fine, wt? am I misusing the button control?)
[Code]....
Custom Server Controls :: Button Triggering An Event In A Custom Webcontrol?
Nov 16, 2010I built a webcontrol showing a complex user interface with a lot of javascript. Basically my webcontrol is similar to : [URL]
Now that most the user interface is working properly, I'm stuck with the following issue: I want to add a button (html button tag) which has to trigger an event. I have been able to declare the event, the event args, the delegate,etc. The page using my control may assign a handler and that handler is called correctly when I explicitely call OnServerControlClick (The name I gave to the event). I cannot make the link between the button in the user interface and the event in the webcontrol source code. When the button is clicked, I get an error message saying a dangerous Request.Form value has been detected.
Web Forms :: RadioButton CheckedChanged Fires Twice
Aug 5, 2010I have one RadionButton and a Button.
When I clik on RadionButton it fires it CheckedChanged Function perfectly.
But, when I click on the Button, it ALSO fires the same RadionButton ChechedChanged Function! I don't know why!!!
I want to avoid that! I don't want the button firing that RadioButton function.
Forms Data Controls :: CheckedChanged/OnClientClick In GridView?
Jan 13, 2010 I have a gridview with a template column that causes a postback on check changed in order to change display. It works fine:
[Code]....
And the code behind:
[Code]....
Works great, right? Well I wrote a small javascript file to make the checkboxes mutually exclusive, but now, while the post back refreshes and the javascript works, it does not show the popup extender anymore - it doesn't even enter the codebehind function.
[Code]....
Web Forms :: Treeview Events Are Not Triggering?
May 24, 2010Master page Treeview events are no triggering...
(trvMenu_SelectedNodeChanged,trvMenu_Unload .)
Web Forms :: Page Load Is Not Triggering?
Jan 1, 2010I have a web form F1. It has a button in grid B1. On clicking this B1 one dialog box opens thorugh javascript.
Now problem is on closing this dialog, Page_load event of F1 is not fiering. I have no output cache declared in dialog. I have to trigger the Page_Load event.
Code in F1,
<% @
Page
Language="C#"
MasterPageFile="~/MasterTemplate.master"
AutoEventWireup="true"
CodeFile="UpdateCustomerComplaints.aspx.cs"
Inherits="UpdateCustomerComplaints"
Title="Update Customer Complaints"%>