.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Register
 
Win Surprise Gifts!!!
Congratulations!!!


Top 5 Contributors of the Month
Easy Web
Imran Ghani
Post New Web Links

dropdownlist javascript change items

Posted By:      Posted Date: August 25, 2010    Points: 0   Category :ASP.Net
 

I can't find solution for this problem for very long time:

I have dropdownlists in Gridview. I need to dinamicly change content of dropdown on client with javascript. Ok, I know to do that. But the problem is when I send data to server changes in dropdownlist does not see. On server I have  old items. How can I change items in dropdown on client with javascript and than see that items on sever when postback data?


Thanks




View Complete Post


More Related Resource Links

dropdownlist bound to sqldatasource adds items instead of replacing on change

  

Hello,

I have a series of dropdownlists on webform in ASP 4.0. The first drop down is filled upon load, and then when a user selects a value from that list, it populates the second dropdown. To accomplish this, I have a SQLdatasource with a parametersource of the first drop-down list control. This works great, except when a user changes their selection from the first drop down. It performs the query, but then adds the list of items to the ones that were already there from the previous selection, instead of replacing it with the new data. Here is the code:


 <asp:DropDownList ID="ddlMajor" runat="server" DataMember="DefaultView" 
      DataSourceID="SqlDataSource1" DataTextField="majortext" 
      DataValueField="majorkey" AppendDataBoundItems="True" AutoPostBack="True">
         <asp:ListItem Value="0">Select Major</asp:ListItem>
</asp:DropDownList>
<asp:DropDownList ID="ddlReq" runat="server" DataMember="DefaultView" 
      DataSourceID="SqlDataSource2" DataTextField="req" DataValueField="admreqkey" 
            AppendDataBoundItems="True" AutoPostBack="True">
                <asp:ListItem Value="0">Sel

Items added through Javascript to a dropdownlist are not accessible through code behind

  

Hi All,

I am successfully able to add new items to a drop down list using Javascript.

The script I am using is 

        function FillJavaScriptValues() {
           
            var ddlDeliveryVan;
            ddlDeliveryVan = document.getElementById("DropDownList1");
            var opt = document.createElement("option");

jQuery: Styling DropDownList Alternating Items (Rows)

  
In the following example, I will show how you can style any asp:dropdownlist very easily.

The example demonstrates how you can change alternating row items background color, using the fadeTo() to add a nice touch in the dropdownlist. You can change alt rows with a couple lines.

Way of adding items in Drop Down List or List Box using Javascript

  
The article Way of adding items in Drop Down List or List Box using Javascript was added by raja.s on Sunday, June 06, 2010.

Hi,script type="text/javascript"> function AddItem(Text,Value) { // Create an Option object var opt = document.createElement("option"); // Add an Option object to Drop Down/List Box document.getElementById("DropDownList"

How to handle Active and inactive items in the dropdownlist?

  

It is a general ASP.NET questions. Many times some items in dropdownlist will become inactive (retired)or active again. It is easy to handle in the new records which use only currently active items. But how to handle the inactive items which need to be used to show history records. It bothered me a long time, not sure how to solve this problem efficiently.

Thanks


change form target from javascript

  

Salam to all,

in my page, i have an iframe which have a src for another page,

the inner page have a Forms, buttons.. ..etc. the target for the form in the inner page is "self"

i need to run a javascript code from the parent page to change the  inner page form target to posted the values in a Blank window.

how can i do that ?

thanks


Change RadMaskedTextBox value via javascript

  
Hi All,I am using RadMaskedTextBox in my web page. I am trying to set its value through javascript. It works ok if i hard-code control name (i.e. rtHours11_1) in the script as following: var radMaskedTextBox1 = window["<%= rtHours11_1.ClientID %>"]; radMaskedTextBox1.SetValue("00:00"); But I want to set the control name dynamically as this function will be called for many controls on the page. Can someone help me to modify it in the way that it will accept the control name dynamically as following: function InitilizeMe(thisCtrl) { var radMaskedTextBox1 = window["<%= thisCtrl.ClientID %>"];  radMaskedTextBox1.SetValue("00:00"); } Thanks in advance for your help.Regards.

how do i use javascript to change values of controls inside a gridview

  
i have 2 labels (lblRate,lblTotal) and a textbox (txtQuantity) in a itemtemplate of a gridview.I want to calculate the products of rate and quantity and show it in Total as the textbox loses focus...i cant use textchanged because i dont want the page to postback.How do i use javascript to achieve this??Please Help Urgently....<asp:TemplateField HeaderText="Rate">                <ItemTemplate>                    <asp:Label ID="lblRate" runat="server" Text='<%# Eval("Rate") %>' />                </ItemTemplate>            </asp:TemplateField> <asp:TemplateField HeaderText="Quantity">                <ItemTemplate>                    <asp:TextBox ID="txtQty" runat="server" />                </ItemTemplate>&

Why does OwnerDrawVariable change the look of a DropDownList?

  
Hi, I am trying to extend a combobox to allow Enabled / Disabled items. I have everything working, except the look of the the combobox changes when Drawmode is set to OwnerDrawVariable and DropDownStyle is set to DropDownList. Why, and is there a workaround? I have tried the suggestion from this link... http://stackoverflow.com/questions/2891981/net-ownerdraw-combobox-vista-7-themed-dropdownlist/3565005#3565005 Whilst this seems to fix the appearance of the combo, it breaks most of the event code, and the OnDrawItem event, whilst fired, always has an index of -1 in the DrawItemEventArgs. I am using c#, visual studio 2010 and .net4 to create a Winforms application.   Cesare          

Change active tab in Ajax tab container using javascript

  
I have been using the ajax tab control. I need to change the active tab index of the tab container through javascript. Can please anyone tell me how can i do it Cheers Sohail Sayed

how to change the permissions list items using the workflow?

  
How to change the permissions list items using the workflow? Or how to instull SPDActivities on sharepoint 2010?

Change Item order wont work for folder items

  
Hello. Links lists in Sharepoint 2010 have Change Item Order Action which can order your items. I added new content type based on folder content type to my list. And When I want to order my folder items with Change Item Order action Sharepoint sorts my items randomly. For example with 4 folder items it sorts it right in 3 or 4 times. I can't see any rule in it's behavior sometimes it works sometimes not. For Link list items everything is OK. Anyone have an idea? Thanks.

Trap Selected Index change event of listbox using Javascript.

  
Hi All, This is reagarding listbox selection. I have a list box with multi select option. I want to trap the selected index change event of Listbox through javascript. Item of list box can be selected using Click of mouse and also the keyboard up down key with shift. I tried onclick event to bind the javascript function. It works fine if I select by mouse, but it doesen't work for up/down key of keyboard. Thanks, Naveen

Get all items form List using JavaScript.

  
Hi! I'm develop for SharePoint 2010 and I have a ribbon button with CommandAction code like this:     function demoCallback(dialogResult, returnValue) { if (dialogResult == SP.UI.DialogResult.OK) { SP.UI.Notify.addNotification(returnValue); SP.UI.ModalDialog.RefreshPage(SP.UI.DialogResult.OK); } } var ctx = SP.ClientContext.get_current(); var items = SP.ListOperation.Selection.getSelectedItems(ctx); if (CountDictionary(items)==0) { var selectList = SP.ListOperation.Selection.getSelectedList(); //var currentList = currentWeb.get_lists().getById(selectList); alert(selectList); } var myItems = ''; var myFolders = ''; var k; for (k in items) { if (items[k].fsObjType == 0) myItems += '|' + items[k].id; if (items[k].fsObjType == 1) myFolders += '|' + items[k].id; } var options = { url: SP.Utilities.UrlBuilder.urlCombine(ctx.get_url(), '_layouts/MetaVis.Classifier2010/Classify.aspx') + '?items=' + myItems + '&amp;folders=' + myFolders + '&amp;List=' + SP.ListOperation.Selection.getSelectedList(), args: m

Get all items from List using JavaScript.

  
Hi! I'm develop for SharePoint 2010 and I have a ribbon button with CommandAction code like this:     function demoCallback(dialogResult, returnValue) { if (dialogResult == SP.UI.DialogResult.OK) { SP.UI.Notify.addNotification(returnValue); SP.UI.ModalDialog.RefreshPage(SP.UI.DialogResult.OK); } } var ctx = SP.ClientContext.get_current(); var items = SP.ListOperation.Selection.getSelectedItems(ctx); if (CountDictionary(items)==0) { //TODO: Get all items in list here; } var myItems = ''; var myFolders = ''; var k; for (k in items) { if (items[k].fsObjType == 0) myItems += '|' + items[k].id; if (items[k].fsObjType == 1) myFolders += '|' + items[k].id; } var options = { url: SP.Utilities.UrlBuilder.urlCombine(ctx.get_url(), '_layouts/MetaVis.Classifier2010/Classify.aspx') + '?items=' + myItems + '&amp;folders=' + myFolders + '&amp;List=' + SP.ListOperation.Selection.getSelectedList(), args: myItems, dialogReturnValueCallback: demoCallback }; SP.UI.ModalDialog.showModalDialog(options);

Validating DropdownList Inside Gridview Using Javascript

  
hi All,      I have Gridview with Dropdownlist which contains data as {select,1,2,3} .Gridview contains multiple rows of data.Submit button is also on form but outside gridview. If any of the rows of gridview dropdownlist contain value as "Select" and click Submit button ,give message as "Please select value". I want to do this stuff using javascript. Thanks in advance.

To Hide multiple items having same ID using Javascript

  
How to access items having same ID using Javascript ?I want to hide these items.Urgent Help Requried .......
Categories: 
ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend