I have a radionbuttonlist with 4 options, but none are selected as default (by design).How do I trigger an event when a users selects one for the first time? My onselectedindexCHANGED works fine.
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I have an application where I have a dropdownlist with AppendDataBoundItems set to true. This allows me to add a select all ListItem with a value of "-1". I store the selected value in a session so that the selected value is retained if a user navigates away from the page then returns. This works fine for all values except for when the value is set to the appenddatabound item (All). When I debug i can see that the onselectindexchanged event does not fire when the 'All' item is selected. If a user navigates away from the page and comes back this 'All' value is lost as it is not stored in the session.
find my code below:
<asp:DropDownList ID="ddlTeams" runat="server"
DataSourceID="odsTeams" DataTextField="Team_Name" cssClass="ddl"
DataValueField="TeamID" AutoPostBack="True" AppendDataBoundItems="True"
onselectedindexchanged="ddlTeams_SelectedIndexChanged">
[Code]....
I have a dropdown list that is populated by a dataset (Data being extracted from DB). Based on the selection made by the user I call OnSelectedIndexChanged, and populated the form with the relevent info. The problem I am having is the first item in the list is selected by default, so if the user selects this option OnSelectedIndexChanged does not fire. To work around this I add a default item to the dropdown list after populating it with the dataset as shown here;
jobStandardActList.Items.Insert(0,
jobStandardActList.SelectedIndex = 0;
jobStandardActList.SelectedValue =
"----Select an Item----");"";
This works fine, however if the user selects an item from the list, and then proceeds to selects the default item "----Select Item----" i receive an error. sys.webforms.pagerequestmanagersevererrorexception: an unknown error occured while processing the request on the server. The status code returned from the server was: 500
I have an asp.net page with a list box on it. Multiple event handlers subscribe to its OnSelectedIndexChanged event.
When I change the SelectedIndex programmatically none of the events get fired.
Now a hack for this is to call each event handler, but this has already caused bugs since people didn't know they had to do this when adding a new event handler.
I can do this in a Winforms app and even when SelectedIndex is changed in code the events fire.
I have a RadioButtonList with some fixed element and a default selected. If I uncheck the selection with javascript, on postback the SelectedIndexChanged event is not fired.
I would expect that the SelectedIndexChanged is called because the index is changed to -1.
this is the Asp.Net code
<asp:RadioButtonList ClientIDMode="Static" ID="RadioButtonList1" runat="server"
onselectedindexchanged="RadioButtonList1_SelectedIndexChanged">
<asp:ListItem Value="1" Selected="True"></asp:ListItem>
<asp:ListItem Value="2"></asp:ListItem>
</asp:RadioButtonList>
and the jquery code
$('#RadioButtonList1 :radio:visible').attr('checked', false);
As far as I know, the stage of data collection from the submit of the form is handled by IPostBackDataHandler.LoadPostData method.
I derived a class from RadioButtonList to verify when LoadPostData is called and I noticed that when non of the radio button is selected the method is not called and the same for SelectedIndexChanged event.
it seems that if the key of RadioButtonList is not present in the Page.Request.Form.Keys array, the LoadPostData is not called.
i read article "using javascript with asp.net radiobuttonlist control" and i found it useful.
[var RB1 = document.getElementById("<%=RadioButtonList1.ClientID%>");
var radio = RB1.getElementsByTagName("input");
if am setting radio[1].checked = 1; the item is checked. ]
step1: radio[0]=checked
      radio[1]=not checked
      radio[2]=not checked
step 2: by using javascript , am changing the selection
nowÂ
      radio[0]=not checked
      radio[1]=checkedÂ
     radio[2]=not checked
step 3: if am changing radio[0]=checked by clicking, it wont fire the selected index change that i wrote on code behind
but if am changing radio[2]=checked by clicking, it will fire the selected index change that i wrote on code behind
My requirement:Â i want to fire the selected index change in both cases. for that i need to change the selected index in step 2.
I have a radiobuttonlist inside a datalist itemtemplate and i need to bind the radiobuttonlist dynamically from database I have tried to bind it inside itemdatabound event of datalist but it the result is always duplicated according to the fields in teh database.
for more information:
the database has two columns one for questions and the other is for choices , for the first question with id lets say 1 there are 4 choices, when the radiobutton is binded the result appears to be 4 times duplicated ?
What I would like to do is:
From a textbox, I add a name for a product and create a object with that name.
The product object is then added to a Dictionary.
Then, I want to bind this Dictionary to a dropdown list.
If I change the selected item, I want to display the number of the chosen product (Default as 0 when I create the product object).
The problem is that when I try to change the item in the dropdown list, nothing happens.
.aspx
<asp:TextBox ID="productText" runat="server"></asp:TextBox>
<asp:Button ID="newProductButton" runat="server" OnClick="newProduct_Click" />
<div>
<asp:DropDownList ID="ddlProducts" runat="server" AutoPostBack="true"
[Code]....
I have an UpdatePanel with a dropdownlist (countries) and a multi-select listbox (locations). If the user selects a country, the locations for the country get populated. By default, all locations must be selected.
Works absolutely fine, except that if you choose a country, then change the country back to the original value ("All Countries") - the OnSelectedIndexChanged doesn't fire. Page PostBack occurs, tho.
AutoPostback is true, everything else works fine, just can't get the darned event to fire on when the original value is Selected. The result is that the drop-down list gets populated with the default list of locations (for All Countries), but they aren't selected...only the subset from the previously selected country are selected?
The OnSelectedIndexChanged event is not firing for my dropdown box. All forums I have looked at told me to add the AutoPostBack="true", but that didn't change the results.
HTML:
[code]....
I have a list of items in a GridView, with one column I'd like editable through a DropDownList.I do not wish to put the GridView into 'edit' mode or have any 'confirm/update/save' buttons.. I just want autopostback on the DDL, and an OnSelectedIndexChangedevent to update the row.Problem is, from my OnSelectedIndexChangedevent within the DDL, although I can see the new value to save, I can't discover the row to update from the GridView.Can anyone see how I can achieve what I wish? Other than perhaps storing the row id within the DDL? Maybe turn it around so the GridView's events are called?
View 1 Repliesi created an asp.net "web application" in VS 2008, building on .NET 2.0 framework. i have a form page with a code behind file. the form is very basic: a table with some text boxes and radio buttons. here is a piece of the form:
[Code]....
I have a gridview where the dropdownlist is built during the RowDataBound event. I need to be able to poup a window based on the selection from the dropdownlist Items.
I cannot use Repsonse.Write("window.open('link');") coz i will need to redirect to the webpage which clears out the search on the page.
I need to be able to open a new window with the link and continue executing code on the page.
I have tried,
1) Page.ClientScript.RegisterStartupScript(Me.GetType(), "openwindow", "window.open('" & link & "');", True)
2) Dim s As System.Windows.Forms.HtmlWindow s.Document.Window.Open(link, "", "", False)
3) Process.Start(link) - this works locally but dosent on the testbox
This is realy simple, basic functionality, but for some reason it's not working.
[Code]....
When I debug I notice that the event never is fired.
I have a panelA with a drop down list (ddl1) and a panelB with 2 dropdown lists (ddl2 and ddl3).
I am disabling PanelB in the page_Load section. When a selection has been made in the ddl1 in panelA, I am enabling panelB in OnSelectedIndexChanged event to enable ddl2 and ddl3.
This process is working, but as soon as I make a selection on ddl1, the whole page reloads to enable ddl2 and ddl3, which feels odd. How can I make it just reload panel3 not the whole page? I guess it can be done using AJAX update panel but as soon as I put <%@ Register Assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="ajaxtoolkit" %> and <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>, I start getting wierd error: Microsoft JScript runtime error: Sys.ArgumentTypeException: Object of type 'Object' cannot be converted to type 'Array'.
Parameter name: array
I have a DropDownList that is supposed to redirect the user to a page when they change the selected index of the DropDownList. I have three parameters that are being passed by this redirecting. The first time the user changes the selectedindex, it does not work. but every time after that it works.
<asp:DropDownList ID="fiscal" runat="server" AutoPostBack="True"
DataSourceID="SqlDataSource3" DataTextField="fiscalno"
DataValueField="fiscalno" style="margin-left: 28px" Width="130px"
onselectedindexchanged="fiscal_SelectedIndexChanged" >
[Code]....
I would like to call a javascript function for
<asp:DropDownList ID="AutDrpDownList" runat="server" AutoPostBack="true" OnSelectedIndexChanged="AuthorityDrpDown_SelectedIndexChanged"> ...
I want to call a client side javascript method for validating some controls, before calling server side :
[Code]....
how to implement this. Before going to server itself, i need to perform validation .
How would I get the previous item on DropDownList before OnSelectedIndexChanged fires the event?
I had a DropDownList that has names as its items ("John", "Mark"). By default the SelectedIndex is "John". Upon changing its index and selecting "Mark" the event OnSelectedIndexChanged will be triggered. When I use ddlName.SelectedIndex it will return only the index for "Mark" which I want to get is the index of "John".
this is my radio button list:
[code]....
this is the code behind:
[code]....
I have a repeater control bound to a dataset. Within that repeater I have several further controls one of which is a dropdownlist. I trap the OnSelectedIndexChanged event of that dropdownlist because I want to recalculate some figures presented on the same row within the repeater.
How do I reference other controls which are on the same row of the repeater as the dropdownlist ? Is there an index property or other mechanism whereby I can identify the "current" row?
This is a question about layout. I'm developing a .net page, whenever I add a radiobuttonlist right after a label, it comes down to next row. But in the code side, it still within the same row. The problem is if you browse it in IE, it comes down to the next row. I am sure the width of both label and radiobuttonlist is not oversized.
View 3 RepliesI am using simple radiobuttonlist with four items, I have enabled viewstate and postback but whatever option I choose it always return first value.
Here is the code:
<asp:RadioButtonList runat="server" AutoPostBack="true"
EnableViewState="true" OnSelectedIndexChanged="Changed" ID="rbSlots">
</asp:RadioButtonList>
ListItem item = new ListItem(starthour + " - " + stophour + ds.Tables[0].Rows[i]["LastName"].ToString(), ds.Tables[0].Rows[i]["xavid"] + "¤" + ds.Tables[0].Rows[i]["xuserid"]);
and I have RadCalendar, on which SelectedDateChanged Event I populate the radlist
I have a RadioButtonList and what I would like to do is add a check mark image to the end of each item that I can show to give the user a visual indicator that the chosen option is complete.
View 4 Repliesi have a radiobuttonlist and dynamically i want to add images to it after fetching it from database. I fetch the required data and store it in data table and then try to bind images to radiobuttonlist but somehow the images are not getting displyed.
[code]...
I am populating a radiobuttonlist in codebehind:
Code:
[code]....
