Dropdownlist Autopostbacks / Tried To Select A Diferent Value In Dropdownlist2, It Comes Back To First Element?
Feb 3, 2010
i have 3 dropdownlist, they are populated in cascade, dropdownlist2 info depends on dropdownlist1, and go on, i put the autopostback = true to the dropdownlist1 and dropdownlist2, but when i tried to select a diferent value in the dropdownlist2, it comes back to the first element, of course, i am doing a postback, the dropdownlist1 populate, and the dropdownlist2 datasource depends on the dropdwonlist1.selectedvalue, and put the same element no the last selected.
I have a window that has 3 dropdownlist controls and a textbox with a Calendar Extender associated to it.
I have the following on my pageload event so when the Page loads the current Date is put in the date textbox:
[Code]....
I can change the date fine but when I select a value from one of the other dropdownlist controls it puts the date back to today's date...The only place I am setting the Date to the current date is in the pageload event...
how can I get it to keep the date to what I change it to after I select a new value from one of the dropdown lists?
I have a project that queries a set of times from a database and uses these entries to populate a dropdownlist. Once the page is loaded, the user can select one of the items in the DropDownList. When the "Save" button is clicked, the Selected item value is returned to the [HttpPost] version of the controller action. This item is then stored into session. If the system returns to the page containing the dropdown, I want the saved Value to be selected in the DropDownList. What actually happens is that the DropDownList is always set to be the first item in the list.
Database Table: This data has been imported using Link to SQL
I am using Javascript to alter the innerHTML attribute of a <td> and I need to get that info back in the form submittal. The <td> corrosponds to an <asp:TableCell> on the server-side, where the Text attribute is set to an initial value.
The user cannot enter the value in this particular field. Instead, its value is set by me (via client-side script) based on actions that the user performs. But this field is useless to me if I can't see its value on the server-side as well.
I'd like to avoid using a read-only textbox, because those are difficult to resize dynamically. Can an <asp:Label> be used as form data? Is there any way to achive this without letting the user manually enter the data? Or is there a simpler way to store a string as a variable somewhere and send it back as form-data?
I have a few scattered <p> elements on the aspx page which I am grouping together using a class like so - <p class="instructions" runat="server">
In my code behind, using C# I want to hide these elements, using something like instructions.Visible = false;
However I realize I can only do this in codebehind if I use ID but this will result in invalid HTML/CSS Selector since you can't have multiple ID's with the same ID name...
Alternatively is there another way to group the controls if not by class?
EDIT: I can't use JavaScript, so the selection must be done in C# codebehind/ASP.NET
I am trying to auto fill city and state value after user typing 5-digit zip code. The Ajax part works perfectly, the problem is I have two sets of zip/city/state fields in one web page. I searched this issue for quite a while, using next(),nextAll() even slice(), none of them work in my situation.
Web page related part:
[Code]....
After using Ajax function I get returned value for city and state. For each city textbox I give a "city" class, for each state dropdownlist I give a "state" class. I wonder how can I put those value into right position?
I have an issue that I've been fighting with for some time. I have a large web form, with update panels and autopostback controls. When the users click "submit", some custom javascript runs which shows validation summaries and turns the fields with errors red, relatively easy, and it works as expected. The problem is that I have a dropdownlist which should autopostback an update panel. It does this perfectly if the user does not click the submit button, and therefore my custom client script dosesn't execute.However, if a user clicks submit, the custom client script executes (turns fields red and shows validation summaries), and then the dropdownlist does NOT autopostback the first time a user changes it's value. If the user changes the dropdownlist's value a second time, then the autopost back occurs and everything functions as it should. I don't understand why the autopostback is disabled for the first click after the javascript executes. Can someone please help me out? The DropDown List looks like:
I have a View that has a select drop-down list and an edit button within a form. What I want to do is have the user select one of the options from the select element, click on the edit button, and get the value of the selected option in the Controller method.
I created my form with <% Html.BeginForm(): %>
and the Controller "Edit" method should be called.
I looked through several online examples, but each one focused on how to set values and the default selected value of the select element, rather than retrieving it from the code in the Controller method. I tried grabbing it from the Request.Form collection like:
string val = Request.Form["myDropDownList"].ToString(); and also: string val = Request.Form["myDropDownList"];
Obviously I didn't do this correctly, because I get a null reference exception. Does anyone have the solution to this issue?
To demonstrate that I could even use a Class attribute on an option elem I tried adding class attributes to options of a select elem in a static page and that works fine. I noticed that not many online resouces documented this so I figured I would explicitly set the record.
here is the jquery code attempting to add a class to the selected option
[Code]....
New information, I found the reason nothing occured was a simple mistake in the value being passed in for compLev. However, now it runs through the code for the correct case and does nothing to the color of the item.
I am trying to collect the chosen value from a html select element and insert it into an SQL Server 2005 database and I get the following exception caught:
Failed to convert parameter value from a HtmlSelect to a String. (I've been converting everything to String before submission to the DB using ToString();
i have a select element with few items and the script.
[Code]....
on selection of any item from the dropdownlist how can i get the text selected from dropdown in the javaScript function that i have provided in onchange event handler ?
I had use a combox to let user select staff name and then it will automatically retrive the responsible recommending officer and approving officer to display in other 2 dropdownlist.
my code works fine but when user select staff name each time, the page will reload once to refresh the dropdownlist.
user complaint and don't want the page reload every time, how can i disable the postback? I need to use ajax?
I'm trying to implement live binding, purely imperatively . In my example , I have a master view , which is populated using json array. In the detail view ,I'm just setting the value of a prepopulated combo box . But , the moment the bind statement is executed, the combobox (select element) becomes null. This works perfectly when done declaratively. Below is the code for imperative binding. This function is triggered when an item in the masterview is selected.
function execCommand(sender, args) { // Create dataview for details section var detailsView = $create(Sys.UI.DataView, null, null, null, $get("div2")); $get("div2").className = "sys-template"; // bind the dataview to the selected data from the master var b = Sys.bind(detailsView, "data", sender, "selectedData"); // after the above line of code is executed, the select element with id "myselect" becomes null. //alert($get("myselect")); // bind the value attribute of the combo box to the "Description" property of the binded data var x = Sys.bind($get("myselect"), "sys:value", detailsView.get_data(), "Description"); //hence when the above line of code is executed , nothing happens :( ,i.e the value of the combo box doesn't get set // alert($get("myselect")); }
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SysObserverSampe.aspx.cs" Inherits="SysObserverSampe" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml">>....................................
I have an ASP dropdownlist with AutoPostBack="true" and I want to do some javascript client side which can stop the postback if necessary. However, I can't get it to stop the postback.
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:
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.
i have tow dropdownlists in formview when i select from the first dropdownlist i take the value and postback to the same page with this line response.redirect("addtabs.aspx?SECID="+dropdownlist1.selected value.tostring())and thi second dropdownlist take th SECID and fill it self with sqldatasource with this parameter every thing okbut when post back the first dropdownlist doesn't select my choise but select the first item in it how can i make it still select my selection.
I have a gridview that have 5 columns. The first column is the select button, 2nd to the 4th are just displaying of data which I have used HTMLdecode to set it to disable the htmlencode so that I could display 2 lines in the gridview. However, after enabling htmldecode. my 2 fields, the select button and the text box columns are not able to be displayed out.
Here is the code for the gridview:
Protected Sub gvTransaction_RowDataBound1(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles gvTransaction.RowDataBound If e.Row.RowType = DataControlRowType.DataRow Then Dim cells As TableCellCollection = e.Row.Cells ' cells For Each cell As TableCell In cells cell.Text = Server.HtmlDecode(cell.Text) Next End If End Sub
