Javascript - Setting Dropdown To First Value
Oct 13, 2010
I have an .aspx hidden control that stores a defaultId for this dropdown. However, the values in the dropdown can change and sometime the defaultId is listed as one of the selections, other times it isn't. When the drop down clears we run this to reset it:
Global.getComponent("ddlVehicleType").setValue(Global.getComponent("DefaultVehicleTypeId").getValue());
Now when it sets that, if the dropdown doesn't have a value associated with that Id, it displays the actual Id in the field. I have a check for isNumeric now to see when that happens, but how do I make the field display the first value in the list of Id's it DOES have:
var displayedValue = Global.getComponent("ddlVehicleType").getRawValue();
if (IsNumeric(displayedValue)) {
}
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Apr 8, 2010
I have a dropdown list with a piece of code that is run when the value is changed:
<select name="SList" onchange="javascript:setTimeout('__doPostBack('SList','')', 0)" id="SList">
Everything works fine when manually done. As an option is selected, the onchange code is called.
The problem begins when I try to change the selected value using a piece of Javscript. I want to be able to automatically change the selected option using JS, whilst still having the onchange code called, exactly as if done manually.
I try calling this:
form.SList.value = "33";
The right option is selected, but the onchange code does not get called. So then I try doing this:
form.SList.value = "33";
javascript:setTimeout('__doPostBack('SList','')', 0);
The right value is not selected and nothing happens.
FYI, the code is done in ASP.NET and Javascript.
What can I run to change the selected option whilst still calling the onchange code?
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Feb 11, 2010
I would like to set a value:
[code]....
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Jan 28, 2010
i have a country dropdownlist (asp.net server side control) where in i wish to set United States as first country from list of alphabetical countries in drop down. How should i do that?
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Below is the code of country dropdown.
[Code]....
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Jan 10, 2010
I'm binding data to my dropdown as follows:
[Code]....
So my dropdown will be populated with a list of years that could be different depending on the SchoolID passed in. I want my default value to be the max returned in the SELECT query minus 5 (so in other words, the max index minus 5). For example, if my list of years was:
2004-05
2005-06
2006-07
2007-08
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2012-13
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Apr 10, 2010
I've got a user control with a dropdown of states. I have a State property that sets the selected value. When I add this control to a page and set the state property, it doesn't set the selected value. If I add some code in the page load event of the user control it does set the selected value.
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Jul 29, 2010
I am not trying to achieve anythign fancy but just trying to set default selected value for one of the dropdown that I am using. for that I am doing Items>selected= true for whatever item I want selected when i load the page. In my case, it is a month dropdows and I am selecting date 14 as selected default value out of all 30 values but somehow, out of the blue .NEt decides to show me 29 instead of 14. I am not sure if there is some another setting that is overwritting this value.
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Jul 23, 2010
When i am setting the tabcontainer first tab as active tab through javascript with the following code :
var tc = document.getElementById('<%= tabContainer.ClientID %>');
tc.firstChild.lastChild.style.visibility = "hidden";
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i am getting the exception like:
Propert or method not supported with this object.
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Jun 18, 2010
I have an issue where my Hyperlink field in Asp.net GridView is not accepting Javascript function that will open a popup dialog.
I am using the following snippet
<asp:GridView>
<asp:HyperLinkField
DataTextField="SomeColumn" HeaderText="Some Column Text"
SortExpression="SomeColumn"
HeaderStyle-HorizontalAlign="Left"
DataNavigateUrlFormatString="javascript:LaunchSomePopupdialog({0})"
DataNavigateUrlFields="Id"
ItemStyle-Font-Underline="true" />
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DataNavigateUrlFormatString="~/SomeOtherPage.aspx?Id={0}"
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Oct 4, 2010
I created a page with several controls (ddl, tbx) that I use for filtering a Gridview. I created a javascript function that runs on the OnClientClick Event of an <asp:button to set the value of an <asp:TextBox to today and a Selected Value in a ddl.
function setMyToday() {
var tbxToday = document.getElementById('ctl00_cntPage_tbxToday');
var tbxUID = document.getElementById('ctl00_cntPage_tbxUserID');
var ddlPV = document.getElementById('ctl00_cntPage_ddlProvider');
tbxToday.value = makeToday();
ddlPV.value = tbxUID.value;
}
The button submits the page and returns some records in a Gridview. I can see the value in the tbxToday when the button is clicked and the row in the drop down list, but when the page is posted,the value in the text bos is lost and as a result is not used to filter the records. However the value in the ddlProvider is maintained.
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Mar 24, 2010
Is there any function to set the TargetControlID of a CalendarExtender from Javascript?
I can do something similar with ASP.NET validators with this built int method:
[Code]....
Is there something similar for the CalendarExtender?
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Apr 21, 2010
I have been trying to set the value of a hidden input by using Javascript and then access the value from within my C# codebehind. When I run the code that is copied below, the value that is assigned to assignedIDs is "", which I assume is the default value for a hidden input. If I manually set the value in the html tag, then assignedIDs is set to that value.
This behavior suggests to me that the value of the input is being reset (re-rendered?) between the onClientClick and onClick events firing.
html/javascript:
[code]...
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Feb 17, 2011
I am using a master page and web content forms in my project. I have a panel on my web content page which opens a popup window using window.open. When opening the popup window, I disable the panel on the web content form.
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Dec 28, 2010
how to setting the targetcontrolId and showing the popupextender in javascript by using popupextender behaviourId or its serverId?
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Oct 20, 2010
I have a dropdownlist and a gridview with a drop down list in every row. I have removed other cols in Grid for simplicity.
Whenever a new value in the dropdownlist is selected I would like to set all of the dropdownlists in the gridview to that same value via javascript. (Yea both the dropdownlist outside the gird and the ones inside the grid are populated by the same data source)
The dropdownlist:
<asp:DropDownList onchange="javascript:onJDSelection();" ID="DropDownList3" runat="server"
DataSourceID="SqlDataSource4" DataTextField="circt_cstdn_nm"
DataValueField="circt_cstdn_user_id">
</asp:DropDownList>
The GridView:
<asp:GridView ID="GridView2" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDataSource1" onrowdatabound="GridView2_RowDataBound">
<Columns>
<asp:TemplateField HeaderText="Change to Job Designer" SortExpression="circt_Cstdn_nm">
<EditItemTemplate>
<asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("circt_Cstdn_nm") %>'></asp:TextBox>
</EditItemTemplate>
<ItemTemplate>
<asp:DropDownList ID="ddl_jd" runat="server" DataSourceID="SqlDataSource4" DataTextField="CIRCT_CSTDN_NM"
DataValueField="CIRCT_CSTDN_user_id"></asp:DropDownList>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
My current attempt:
function onJDSelection() {
var jd = document.getElementById('ctl00_MAIN_DropDownList3').Text;
var grid = document.getElementById('ctl00_MAIN_GridView2');
for (var i = 1; i < grid.rows.length; i++) {
grid.rows[i].cells[0].getElementsByTagName("*")[1].selectedText = jd;
}
}
[Code]...
When clicking on the dropdown I get an alert that says "test" and an alert that says "[Object object]" However nothing happens with the dropdowns in the grid and the alert(i) never fires.
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Mar 11, 2010
I haev a dropdownlist box on my page.. with A B C D E Feach pages have difernt images once If I select A I need display one Image like B I need to display other image/table on the page..
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Oct 19, 2010
I have an AjaxControlToolkit.AutoCompleteExtender control attached to a textbox, and three radio buttons. When the user selects a radio button, the service method used to retrieve the values listed in the AutoCompleteExtender is changed, as follows:
[code]...
but nothing seems force the correct events to fire in order to make the autocomplete list re-display with the results of the new service method. How can I make this happen using Javascript?
EDIT: I should note: the jQuery events are firing correctly in each of the above cases, they're just not causing the autocomplete list to reappear when they do. I figure I haven't yet struck the right combination of events that the autocompleteextender is expecting to force the list to appear.
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Sep 9, 2010
I want to set the context key of a cascaded dropdown during pageload. means if tab index = 0 then contextkey = "1" otherwise 2;
[Code]....
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Nov 3, 2010
How can I get the populated cascaded dropdown value using javascript ?
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Jan 20, 2011
How to validate dropdown list using javascript?
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May 14, 2010
I have 2 DropDownLists and use a cascadingdropdown to populate them which works fine. Problem I have is that I aso set the selectedvalue of the first DDL via Javascript. This doesn't then cascade the second DDL.
Code (for what its worth):
function SetControls(intAppId, intDelegateId){
var ddlApplication = document.getElementById('<%= ddlApplication.ClientID %>');
var ddlDelegate = document.getElementById('<%= ddlDelegate.ClientID %>');
[Code]....
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Dec 30, 2010
i am using the function history.go(-1) function on my button to go back. but i am getting a prob in value selected in dropdown.
the sourceview is showing the original value selected but on UI its showing the previous value
means when i click on back button,
UI shows the same value but when i view the source code then the selected value is the same that need to be appear
for example
suppose my dropdown has data in format MM/YYYY first i select 02/2010 and then after that i select 04/2010 now when i click on back button having onclick ="history.go(-1)"
then the value in dropdown remains the same i.e 04/2010 but when i see the source code, then for dropdown the selected value shows as 02/2010.
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Sep 14, 2010
I am using a asp.net Drop down list control which is disabled using javascipt, when I am trying to retrieving the value server side the default value is being set on postback.
It is a Web Project and Iam using VS2008.
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Dec 7, 2010
I want to call the webservice method for repopulating the contains of cascading dropdown.
I dont want to write onparentchange method.
Requirement is simple. But dont know how to proceed.
On parent selection four dropdown will populate.
Now if I select the first child dropdown then again acccording to the choice of parent and first dropdown second, third and fourth will populate. And like wise.
Now how to call the webservice methods after selection of first one to repopulate the containt of the second, third and fourth dropdown.
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Mar 31, 2010
I've 2 dropdownlists, both are binded to a cascadingdropdown. Whenever I select an option in the 1st dropdownlist (parent), the options in the 2nd dropdownlist (child) will repopulate based on the options I selected in the parent dropdownlist. I need a javascript function to reset the options of both dropdownlists in their initial state (the prompt text).
I've tried changing the selectedIndex of the parent dropdownlist. However, this only changes the selected option in the parent dropdownlist. It does not reset the child dropdownlist to its initial state (which is supposed to be disabled and without any options). Need the script to reset the chained dropdownlists?
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