Web Forms :: Dropdown List Filled In Javascript Using Ajax Service But Unable To Get Its Selected Value?
Apr 6, 2010
I am using asp.net 3.5. I filled dropdown list in javascript using ajax service but unable to get its selected value in button click event on server side.
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Apr 6, 2010
I am using ASP.Net 3.5. I have fiiled dropdown list in javascript using ajax service but unable to get its selected value in button click event on server side.
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Aug 11, 2010
I use to populate Dropdown using javascript:
function populateDDL(ddl_id) {
var option_str = "";
var x;
for(x in datalist){
option_str += " <asp:ListItem Value='" + datalist[x] + "' Text='" + datalist[x] + "'></asp:ListItem>"
}
var country_div = document.getElementById(ddl_id);
country_div.innerHTML = option_str;
}
This is sure the datalist is not empty and also Dropdown list populated perfectly..but dnt know why after clicking on my page add button I am not getting the selected value.
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Nov 10, 2010
How can i generate dropdown lists based on what has been selected in the checckbox list. Below is an example of what i need. if the user selects the options day, lotID and waferID, then 3 cascading dropdown lists should be displayed. And then a gridview displays data based on what has been chosen in the dropdown lists.
Day
LotID
SlotID
WaferID
VendorID
ToolID
LocationDetected
ProcessStep
Stage
Precipe
WaferStartMaterial
WaferStartVendor
WaferStartLot
WaferDiameterCOA
WaferMapTitle
BreakPoint
BreakpointSide
BreakpointMeasurement
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Mar 8, 2011
I have set the Dropdownstyle to DropDown but its still not highlighting the item in the list
<ajaxToolkit:ComboBox ID="cmbstudentid" runat="server"
AppendDataBoundItems="True" AutoPostBack="True"
Font-Names="Tahoma" Font-Size="Small" [code]....
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May 27, 2010
Is there a way to open modelpopup window based on value seleted in dropdown list? I want to open a window when Urgent is selected in the dropdown list=!!!!
here is the code for ModalPopupExtender:
<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server"
TargetControlID="DropDownList1"
PopupControlID="Panel1"
BackgroundCssClass="modalBackground"
[Code]....
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Mar 15, 2011
I'm back with my CascadingDropdown problems.
This one must be the last but not the less annoying.
I have a set of dropdowns ruled by 3 CascadingDropDowns extenders.
I would like to change the value of these dropdowns by javascript.
This works for the parent dropdown but not for the others.
Here is the javascript code used :
$find(element_name).set_SelectedValue(valeur,valeur);
$find(element_name)._onParentChange(null,true); // still wonder what are the parameters for...
This code does not give me any error but nothing change on display.
The strangest thing is that when I check the value of my dropdown with firebug, I get this :
<input id="Pane2_content_CONNEX_ClientState" type="hidden" name="Pane2_content$CONNEX_ClientState" value="D:::D:::">
And the value that I set is "D". But on the webpage, the dropdown displays a "A" which is the last selected value.
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Feb 17, 2011
I got one web page which is developed by using Asp.net. and in that page I have got one tab control which developed by using Ajax control toolkit (tab container). In that tab container i have got three tab pannels. In the first tab pannel have got two drop down list boxes and one image control box. wat I was trying to do is that by using calendar extender control in ajax control toolkit i was trying to display a day in the first drop down list box and month and year in second drop down list box. when user click on image control during run time a small calender will pops up and then user will select the propective date according to there choice and when they have finish selecting the date from the calender a day will display on first drop down list box and month and year will display on second drop down list box.
I was keep trying to do that but i was failed. then i took one test box from the toolbox and i was got success in displaying the user selected date in the text box by using ajax calender extender. How to display that date instead of one textbox into two separate drop down list boxes from which a user can select manual date from drop down list as well and from the calendar as well also when the page loads, the two drop down list boxes must show current date ( by default)
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Feb 17, 2010
Clicking the label of a drop down list, re-sets the selected value to the first item in the list. This has a history of causing data entry problems when users accidently click on the label.
In the below example ddlContactType has a selected value as 'PRIMARY' and whenever i click on the lblContactType Text, the dropdown box Selected value is changing to "Select One" Text.
How to prevent this one. It should be on PRIMARY Only.
<p>
<tr> <td ><asp:Label ID="lblContactType" Font-Bold="true" Text="Contract Type: *" ForeColor= "red" runat="server" AssociatedControlID="ddlContactType"></asp:Label> </td> <td > <asp:DropDownList runat="server" ID="ddlContactType" DataSourceID="SqlDataSource2" AppendDataBoundItems="true"
DataTextField="TYPE" DataValueField="ID" SelectedValue='<%# Bind("CONTACT_TYPE_ID") %>'>
<asp:ListItem Text="Select One" Value="0" Selected="True"></asp:ListItem>.......
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Jan 10, 2011
I am using asp:ScriptManager and asp:UpdatePanel to populate a DropDown , and for every field need to display hits in div.In order to Implement the hint I am using JS, it works fine unless I started to populate a dropdown based on another one.
here is some code lines from page and JS
<asp:ScriptManager ID="sm" runat="server" EnablePageMethods="true"></asp:ScriptManager>
<asp:UpdatePanel runat="server" ID="up0">
<ContentTemplate>
<dd><asp:DropDownList runat="server" ID="CCategory" CssClass="lst" ValidationGroup="Property" AutoPostBack="true" onselectedindexchanged="CCategory_SelectedIndexChanged" /><span class="hint">Please choose a city where you want to or having a property.<span
class="hint-pointer"> </span></span></dd>........
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Aug 12, 2010
I tried to use a DropDown-Control (WebDropdown from Infragistics) for the following function: Let the user enter any text or if he wishes choosing by a context menu two different "Already exist entries" in the DropDown-List from where he can choose a value. The behaviour should be this for the DropDown: Right-clicking on the DropDown-Control, filling the DropDownList in the server depending on the choosen context menu item, opening the DropDownList in the client.
The way I tried to solve:
Open (by javascript) a context menu by right clicking on the control
[Code]....
What's the problem? The problem is, that the above javascript function does find the WebDropDown1 control only if it is called client side (e.g. with a OnClientClick button event), calling it from server side (as in the ContextMenu_ItemClick subroutine) it does not find the WebDropDown1 control. The error is shown (translated into english): run time error: object expected.
Maybe a completly different solution is necessary as I transfer a windows forms program into a web form ajax style program. I could use a textbox with dropdownextender for example. But the problem seems to be always the same: uncoupling the dropdown function, which is a client side one, by first filling the dropdownlist on server side, and then invoking the dropdown event makes the problem.
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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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Aug 29, 2010
I've this problem, how can I set the default value for drop down list filled with cascading.
I can't catch the event that came after cascading to set the default value and I can't call any control in this function:
"AjaxControlToolkit.CascadingDropDownNameValue[]"
I've passed the Drop down list as a session and the default value in session
When I call the session of "Drop Down List" the session value Is NULL in this function:
"AjaxControlToolkit.CascadingDropDownNameValue[]"
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Mar 18, 2011
I'm trying to progam a strongly typed "Create" view using MVC 3 and razor. I want the user to be able to select a customer from a dropdown list (I populated this from my database using ViewBag in the controller). When the user has selected a customer I want a separate dropdown list to generate a list of dogs belonging to that customer related by the customerID in the database. The create button on the form will then take both of these values along with the the other fields and save it to the database.
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Oct 14, 2010
I want to stop postback if a certain value from a ddl is selected.
I've used VB to create a page whereby if a certain value from a ddl is selected then a hidden panel becomes visible. The problem is the likely answer to a majority of my ddl's is 'No' (or a no type response), however, even though the panel visibility remains false upon selecting No a postback still occurrs, the page refreshes and moves back to the top. I suppose this is a question with 2 possible solutions (or 2 questions rather)
1: Is there anyway of setting postback to false if selected value = No? A typical example of how my code appears is below
[Code]....
(i've used the value '1' to represenet Yes)
2: Is there a way of setting the page position after postback? As you can see in my code above i've set the focus on the next control (being a Radio Button) but i mean, is there an actual way of defining where the scroll bar is set?
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May 27, 2010
I have a list on the page & I'm trying to add it a dropdown list to narrow down the results
(that I'm not sure is the best way to do so (any suggestion is welcome)
In my class the Query look like this:
[Code]....
In my controller my this is what I have tried :
[Code]....
( I think I have tried every thing that make sense for me )
and the view look like this :
[Code]....
& so on ...
[Code]....
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Jan 18, 2011
I try to display the selected value with dropdown list by using label control but cant display it in firefox but works fine in internet explorer.
Below are my code:
[Code]....
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Jan 25, 2011
I have created a dynamic dropdownlist. I need to get the selected values from the dynamic list and store it my sql database.
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Dec 30, 2010
I have a small problem with drop down list. I have a aspx page which shows the information of a customer and there is an Edit button, which will take the customer to the edit information page. On the edit information page, I have drop down lists and I want the selected value in the drop down list to have the current value of the current customer on Page Load event.
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Mar 26, 2010
I'm having a dropdown list which is being bound dynamically from database. For that i've written selected index changed event which captures the DataValueField of dropdownlist and returns few values from the database again. This dropdown list is in a datalist control and there are 5 items in my datalist control.Selected Value is not working for first 3 items in datalist and working for remaining items.i've changed code many times and i got mad why it is not selecting the selected value..Here is my aspx code and codebehind..
<asp:DropDownList ID="drpHotels" AutoPostBack="True" runat="server" Width="200px" DataTextField="hotel_title" DataValueField="hotel_id" OnSelectedIndexChanged="drpHotels_SelectedIndexChanged">
<asp:ListItem Text="Select a Hotel" Selected="False"></asp:ListItem>
</asp:DropDownList>
[Code]....
For the first item in datalist when i select a value then on Selected Index Changed event, i can see the LISTITEM "SELECT A HOTEL" instead of selected original value.NOTE: this is not happening for all the datalist items, only for first 3 items..
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Jun 14, 2010
I'm doing property booking based project.
I have repeater control for search results.
For every search result I create a dropdown list with 2 month booking overview.
<ddl>
<item value = "1"> January - February </item>
<item value = "2"> February - March </item>
etc.
Then I call function to generate 2 months calendar view, which has two parameters generate(startmonth as Integer, sku as string)
Everything works when I hardcode starmonth as some integer.
I spent all day with no progress on how to pass value. I need a guide. I guess second problem will be to restore changed dropdown values on Postback, but one step at a time.
But what I want to do, to pass selected item value, to function, that would change view for property associated with this dropdown.
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Mar 25, 2010
I need to feach the selected value of a dropdown list which is in gridview at gridview_RowUpdating event.this is the way I have done that, but it is not working can sombody guide me to do this.DropDownList itemCode = gvTest.Rows[e.RowIndex].Cells[0].FindControl("itemCode") as DropDownList;
if (itemCode != null)
{
Session["itemCode"] = itemCode.SelectedValue.Trim();
}
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Aug 27, 2010
I am having 2 web formsand will have a drop down list on those web forms. If i select a value from drop down and click on ok i will get tranfer to next page. In that page i will have a drop down with the same values in the previous form . What i need is i would like to disable the selected value in the previos form and would like to display the remaining normal.
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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.
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Nov 23, 2010
In my application iam having two dropdownlist .i bind the the database to dropdownlist using c# with asp.net but i store the datavaluefeild(id).similar way i fallow for another ddl also. My Aim is while selected index change event of first ddl i have show the corresponding text of second ddl in front end....both the textbox i store the selected value in database
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