Web Forms :: Select Index Changed Event Is Not Fired?

Jan 11, 2010

I am struggling with this.I have the drop down control(dropdownlist) in one page.I am calling selectindex changed event, because i have to fill the values in another dropdown list in the page based on the selected value in the dropdownlist1.But The Event is not fired Even setting the property autopostback=true and Enable view State=true(page level and control level).Another thing is if i put one button control on this page, while clicking the button, the dropdown select index changed Event is fired.i dont know what is happening. I dont think it is any code related IssueNote : if i copy this project in another system, the Select index changed Event is fired.Problem in my systems only..

<%@ Page Language="C#" AutoEventWireup="true" EnableViewState="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<form id="form1" runat="server">
<div>
<asp:DropDownList ID="DropDownList1" runat="server" EnableViewState="true" AutoPostBack="True"
onselectedindexchanged="DropDownList1_SelectedIndexChanged">
<asp:ListItem Text="ddd" Value="1">
</asp:ListItem>
<asp:ListItem Text="ee" Value="2">
</asp:ListItem>
</asp:DropDownList>
</div>
</form>

View 8 Replies


Similar Messages:

Forms Data Controls :: Selected Index Changed Event Fired On Page PostBack?

Jan 13, 2011

On Button click(postback), my dropdownlist of gridview is getting blank, so i m getting error of "Object Reference...." on the line "ddl.selecteditem.value"Also, dropdownlist's selectedindexchanged event is fired on Button Click(Page Postback), which is making the dropdownlist to go blank. AutoPostBack of dropdownlist is set as False,

View 8 Replies

Forms Data Controls :: Cannot Find Control Within Repeater When Selected Index Changed Event Is Fired

Aug 27, 2010

I have a panel which has a repeater within it. Within the repeater I have a few controls. One of those controls is a Drop Down list which has an OnSelectedIndexChanged event. I can get this to fire without issue but I cannot find my DropDownList control within that repeater within the SelectedIndexChanged event . The repeater has an OnItemDataBound event and I can use the RepeaterItemEventArgs to find the control using e.Item.FindControl("ControlName") without issue but when that event occurs is NOT when I need to find the DropDownList.

What I want to do is have another control's Visible property be set to "true" when the value of the DropDownList meets a certain value. As far as I know I can only do this during the SelectedIndexChanged event and I can't change the signature of the event by trying to use RepeaterItemEventArgs.

View 1 Replies

Forms Data Controls :: Select 1st Row In Gridview When Page Index Changed

Jan 14, 2010

I have a gridview with paging. I have a style set for a selected row (highlights the row in light orange). What i would like to do is that each time a user chamges the page, the selectedIndex & selectedRow automatically becomes the 1st row of the selected page. So i would like to see the orange highlight on the 1st row of the page to indicate that the row has been selected.

I have tried GridView1.SelectedIndex=0 but this only seems to select the index of the 1st record in the whole datagrid. Does anyone know of how to set the 1st row of the page to the selected row each time the pageindex is changed?

View 2 Replies

Web Forms :: GridView Selected Index Changed Event

Jan 12, 2012

Based on the gridview row selected i need to populate some dropdownlist which change values based on selection.. And i am populating these dropdownlists at page load..

When i select a row in gridview I want the dropdownlist to show the values in the gridview row which i have selected.. I am doing it like this:

drpemployee.SelectedItem.Text=row.cell[1].Text;

But it throws null reference exception....

View 1 Replies

Web Forms :: Populate DropDownList On Selected Index Changed Event Of Other

Feb 23, 2013

there is 3 drop down list control in in first dropdown load Districts when page load when we select or index changed in drop down1 items changed or loaded in drop down list2 according to the disrict.According to the item selected in drop downlist2 items changed or loaded in drop downlist3.

View 1 Replies

Web Forms :: Index Changed Event From Drop Down List Doesn't Fire?

Dec 30, 2010

I have a weborm where my aspx page has the structure

[Code]....

In my code, I create a drop down list and add it to panel p1

[Code]....

When I change the index of this drop down list, the post back happens, but MyDDL_IndexChanged is never called.

View 2 Replies

Web Forms :: Prevent The Firing Of Index Changed Event In A Dropdownlist When 'NO' Is Selected?

Mar 20, 2011

I have a simple query based on the index changed event of a dropdownlist in ASP.NET. The scenario is i have a dropdown list bearing a collection of items (say ONE, TWO, THREE, FOUR, FIVE) with the default value selected as 'ONE'. Now, when the client changes the index (say the client selects 'TWO'), a confirmation box is prompted asking 'Are you sure want to change the index?' with the buttons YES & NO. Now, the problem is, if YES button is clicked then its working fine as the index is changed. But when NO button is clicked in the confirmation box, I do not want the index to be changed to 'TWO' and it should be holding the previously selected value which was 'ONE'. How can I do this? For which event should I write the code, as I cant think of writing the code for the IndexChanged event because here the index change has already occured and since there is no 'IndexChanging' event in ASP.NET, where shall i write the code

View 7 Replies

Web Forms :: Dropdown List Fires The Selected Index Changed Event Only For The First Time?

Mar 1, 2010

We are developing our application on a 64 bit server. We are using a dropdownlist to filter and display departments in a htmltable(hide and show rows) on every selectedindexchanged event.

The issue is it is firing properly for the first time, but it is not doing a post back there after. We have even given autopostback=true. We are using AJAX for hiding and showing the rows of the htmltable.

View 2 Replies

JQuery - Change Event On Select-element Getting Fired Twice When Using Both DOM-event?

Jun 17, 2010

There is a bug in jQuery 1.4.2 that makes change event on select-element getting fired twice when using both DOM-event and a jQuery event, and this only on IE7/8.Here is the test code:

<html>

<head>
<script src="http://code.jquery.com/jquery-1.4.2.js" type="text/javascript"></script>[code].....

This causes alot of trouble for us in our application cause we use both ASP.NET-events mixed with jQuery and once you hook up a change event on any element every select (dropdown) gets this double firing problem.

View 2 Replies

Forms Data Controls :: Capture The Selected Index Changed Event For A Dropdown List?

Mar 22, 2010

I have a details view control which contains a dropdown list.

I would like to update a row in the DV based on when the selected index change event occurs in another row of the

So far I know that 1) Place code in detailsview1.rowupdating event .

2) Make a row copy, not sure about the syntax here

Dim
aRow As DetailsViewRow =
Me.DetailsView1.Rows(DetailsView1.Rows.Item(?))
3) Find my DDL
Dim aDDL as dropdownlist = CType(aDDL.cells(?).Findcontrol("Dropdownlist3"0, dropdownlist)
If aDLL.selected IndexChanged then
Dim aTextbox as textbox = Ctype(detaislview.cells(?).findcontrol("Textbox6", textbox6)
aTextbox.text = now()

View 9 Replies

How To Handle Selected Index Changed Event For Dropdown List In Footer Template

Aug 6, 2010

how to handle selected index changed event for dropdown list in footer template in grid view

View 2 Replies

Forms Data Controls :: Get The Selected Item From The Listbox In The Selected Index Changed Event

Feb 28, 2011

How to get the selected item from the listbox in the selected index changed event. I tried: Label1.Text = ListBox1.SelectedItem.Text; It is giving me object set to null reference.

foreach (ListItem item in ListBox1.Items)
{
if (item.Selected)
{
//lblResults.Text += item.Text + "
";
Label1.Text = item.Text;
}
}

No use, no value coming in to label.

View 5 Replies

AJAX :: SelectedIndexChanged - Why Event Fired Within The Onblur - Event When It's Fired Anyway

May 3, 2010

[Code]....

A breakpoint is set on FillForm() and this method is called two times but I can't explain myself why this happens. I have client side javascript code, when the form is being send, the onsubmit method is also called twice... Where do I have to search?! Is it a (known) bug? Think I could get it to work with this Thread: [URL] But why is the event fired within the onblur-event when it's fired anyway??

View 2 Replies

SelectedIndex_ Changed Not Getting Fired?

Oct 22, 2010

SelectedIndex_Changed event occurs when selection changes, and selection is changed or not is decided by comparing dropdowns current selectedIndex and its value in viewstate.

When we changes dropdown's selected Item using Javascript, it does not change the viewstate's value (which is previously selectedIndex). Now if you change dropdown's selectedIndex to any new index it will work fine, but if you select the previously selectedIndex (which we reset using javascript), then postback will occur, but selectedIndex_changed function will not get fired because in viewstate of dropdown, selectedIndex is same as the Index we select after resetting it using javascript.

View 1 Replies

Forms Data Controls :: Page Taking Time To Populate Gridview With Row Data Bound At Select Index Change Event

Mar 26, 2011

I am using grid view with row "data bound event" at row row data bound i am using some function with loops to fill drop down of grid view in template columns. grid view gets populated with selected index change event of drop down. my problem is the asp.net page is getting slower i mean when grid populates its taking some time and some time page get hanged what to do to get rid of it?

View 1 Replies

Web Forms :: Hidden Value On Selected Index Changed?

Mar 10, 2010

Im having an hidden field.whose value is set when selectedindex change of dropdown.but im not getting its value.Im getting it if i set it on page load.

View 2 Replies

Web Forms :: Working With Events / When A Button Id Pressed Only 'Click' Event To Be Fired And Not The ComboBox's 'TextChanged' Event?

Jul 13, 2010

I have one Button (Refresh Button), One ComboBox (containing DEV and UAT as its items) and a GridView on my asp page.

I am filling up my Grid with values from database on the ComboBox's 'TextChanged' event and Buttons's 'Click' event.

First time when page is loaded, there is no information in the grid, but when i choose DEV/UAT from the ComboBox 'TextChanged' event is fired, the grid is filled with the relevant data. That is what i want.

When i click the Refresh Button to refresh the data again, first comboBox's 'TextChanged' event and then 'btn_Click' event is fired.

I want then when a button id pressed only 'Click' event to be fired and not the ComboBox's 'TextChanged' event.

View 5 Replies

Web Forms :: ListBox Selected Index Changed In A TabControl?

Oct 25, 2010

As you can see in the picture below i've got a Page control with inital letters which cotains a listbox showing different wood articles. When i click on a Tab, the selected tab page get's a new Listbox control with the wood articels starting with the selected initial letter.

Creating the listbox:

[Code]....

[Code]....

When i click on a item inside the listbox, following code will be executed:

[Code]....

So far, it works fine for me. But when i change the selected Tabpage, the first SelectedIndexChanged in the listbox in the new shown tabpage is not recordnized. That means i have to select a new item and click on Search = the selected Item is still the item i selected before i changed the tab. Then i select the item again and click on search the index changed is recordnized. So why do i have to click two times on search to get the new selected item after a tab page changed?

Here is the full code:

Searchpanel:

[Code]....

The WC_WoodList

[Code]....

View 3 Replies

Web Forms :: How To Display Image On Text Index Changed

Mar 26, 2016

Here the form code - 

<div class="textmid2">Adviser Photo :</div><div class="textright">Adviser Sign :</div></div>
<div class="Row"><div class="view_img1">
<asp:ImageMap ID="imgADphoto" runat="server" Width="140px" Height="150px">
</asp:ImageMap> </div>
<div class="view_sign1">
<asp:ImageMap ID="imgADsign" runat="server" Width="200px" Height="70px">
</asp:ImageMap> </div>
 
Code Behind for form code - 

//code behind//
protected void txtCID_OnTextChanged(object sender, EventArgs e) {
SqlConnection cnn = new SqlConnection();
cnn.ConnectionString = System.Configuration.ConfigurationManager.ConnectionStrings["constr"].ConnectionString;
cnn.Open();

[Code] .....

View 1 Replies

Forms Data Controls :: CheckBox Checked Changed Event Is Firing For Every Control Event?

May 8, 2010

I am facing one strange problem,I have a gridview in which the last two columns have checkboxes and on those checkboxes click event I am doing some database operations.I also have one checkbox that is outside the gridview which actually shows or hides some of the gidview columns.This was all working well but now I have shifted that grid to a user control because I have to use it in two pages.The problem now is,When the page first loads and I click the check box or any control in the page that is outside the grid then it works perfectly.But once I click any of the check box within grid view column then its behavior chages, now even if I click the checkbox that is outside the grid then also the checkbox_CheckedChanged event of the checkbox that is whithin gridview is fired.That checkbox event then behaves something like a page_load event that is called for every page load and for every event with in the page after it is called once.

View 3 Replies

Forms Data Controls :: Gridview Selected Index Changed In Update Panel?

Jun 14, 2010

I have a gridview where I am opening a popup page when user selects a row. If I am not using update panel then Select button is able to open popup page.

If I am adding Update panel, the popup page is unable to open. What could be the cause?

[Code]....

View 2 Replies

Forms Data Controls :: Nested Grids Goes Blank When Page Index Is Changed?

Mar 16, 2010

I have 3 nested grids as Parent/Child/GrandChild and I have assigned SqlDataSources to all the grids at declaration time. I place the SqlDataSource next to each grid as follows.

<GridView>..</GridView><SqlDataSource>..</SqlDataSource>

Because of this I am not doing anything in RowDataBound(...) event. But I used the RowCreated(..)event of Parent and Child grids to access session (Please look at the select statements of Child/GrandChild grids).

Parent grid's RowCreated(..) event puts the value in the session which is used by Child grid. Child grid's RowCreated(..) event puts the value in the session which is used by Grand Child grid.

GrandChild grid has paging enabled and whenever I click on page index, Child and GrandChild grids goes blank. Parent gird doesn't go blank because its select statement doesn't take any "select parameters".

how to overcome this problem. I am attaching .aspx and .aspx.cs files

[Code]....

View 4 Replies

Web Forms :: Populate Columns In DropDownList And Filter GridView Data On Selected Index Changed

Jul 2, 2012

I want to filter grid view, drop down list should select the column and text box will filter the column. like ID NAME Phone Designation fields in gridview.i will select Designation in dropdown and type programmer in text box .so it should filter programmers from the gridview...

View 1 Replies

How To Set A Select Back To The Default Select After It's Been Changed

Sep 16, 2010

I need to set a select back to it's default value after it's been changed based on certain conditions.

View 2 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved