I have a dropdown listbox whose datasource is a dictionary.
When I have added items to the list and try to select an item from the list, the item I selected does not get the focus. And this comes when I changed the property autopostback to true.
Here are some of the codes which are relevant to it.
[code]....
I presume only the Button server control in ASP.NET has AUTO POST BACK set to TRUE by default. All others need explicit setting of this property on need basis.
View 1 RepliesI have an asp.net listbox with 15 rows and auto postback when the selected item is changed. This works as expected but, when the form is re-loaded, IE scrolls the list so that the last selected item is now the top visible item in the list. This produces a confusing/jumpy effect for the users and makes the listbox more difficult to use than it needs to be.
Is there any way to get the list scroll position to stay as it was before the postback? i.e, if I select an item from the middle of the listbox, the listbox is scrolled to the same point after postback.
I am using .Net 3.5 but no AJAX.
When I select the Search By dropdown, an additional gridview is created on auto-postback.I will ad a visual and code as soon as this is accepted for review.
View 1 RepliesI'm trying to auto-populate a listbox of zip codes from a database table state_zipcode_plans based on the state a user selects from the previous listbox. I'm getting the error: Must declare the scalar variable @state_code.
[code]....
I have a ListBox declared like this in my aspx:
[Code]....
And I need to rebind it in the codebehind:
[Code]....
Then I want only the second item in the list to be selected
[Code]....
I don't want the first item to be selected, what do I miss?
I am getting the following error as Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. when an invalid value is passed in dropdown with autopostback=true. What should I do. I want the solution with "EventValidation=true" and "ValidateRequest=true" in the Page directives. Also without any Custom Error Pages Enabled in web.config file i.e Custom Error Pages are off in web.config file.
View 3 RepliesI have the following code:
.aspx
<asp:DropDownList ID="ddlCountries" AutoPostBack="true" runat="server">
</asp:DropDownList>
[code]...
I have a dropdown list where the user can select a name, on change event populates a Session variable and at the same time populates a formview with the full record detail. I want to add a List Item that states "Select Name" but when I add this the page errors. Input string was not in a correct format.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details:
System.FormatException: Input string was not in a correct format.
Because the value returned from the dropdown list box is a string and not a numeric equal to the first name in the list.
AppendDataBoundItems is = true
AutoPostBack is = true
because I want to update the page as a differnent name is selected. I guess I need to not load the form until an actual first name is selected. Uncertain how to prevent the Formview from loading at page load an until a name is selected and not when the dropdown is set back to "Select Name"
how to change the mouse pointer for the listbox when the mouse moves over that listbox
View 1 RepliesI have an imagebutton in Gridview control which is placed in ajaxtoolkit:TabPanel. Clicking on the imagebutton for the first time works fine. It posts back and does the desired action. However, when IsPostBack is true, it doesn't work. Even the onclick event is not called although the page posts back. Please help. Given below is the code for the same:
[Code]....
My dropdown controls do not keep the values after postback even though their EnableViewState is = true and in Page_Load I fill my controls ONLY if not postback.
My controls are inside a panel and the panel's EnableViewState is set to true as well...
To see the page you can log in as test and password is 12345
click on search page and set a value to say Gender and Ethnicity and click submit.
You will see the results, then navigate to number 2 or 3... You will see that it refreshes the controls and sets them to default.
I have created one multiselect drop using listbox.Its working fine.I used this multiselect dropdown in content page .The content page is too small to show the entire dropdown items.Need to scroll the content page to see all items.So i need to show the entire listbox item.or need to display the listbox like dropdown extender in Ajax.I am using asp.net 2.0
View 1 Replieshow to populate a drop down listbox (dlName) from a web service with last and first name i.e. (LastName, FirstName). My Web Service XML that I am requesting is as follows:
<?xml version="1.0" encoding="utf-16"?>
<FindPartnerContactsAction xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<CompanyName>training</CompanyName>
<IntegrationLoginId>cscw</IntegrationLoginId>
[Code]....
I wanna set a default value in dropdown list when i change in list.....e.g.
I have a dropdown which i have placed in Gridview templates and there is another dropdown jst above that grid....i want...when i change in above dropdown and select a value from that...then that value should be apply in below gridview's dropdown...
As i am selecting 'A' then Gridview's All Dropdowns default value should set 'A'
Every time I chage the listbox I want to text in the listbox to display on a seprate label on my form. I have used this:
[Code]....
And this error is for the code above.
I m displaying all errors in a Listbox. and I set the listbox size as the listbox count that means..no of errors. It is very good but the problem. is if the error is one, it is displaying and giving dropdown at the end. I dont want that dropdown.
View 4 RepliesI have country dropdown, now on change of its index i need to populate items in listbox (not in the dropdown).
View 1 RepliesI have a situation where some dropdown listboxes contain some items, then there's a separator line, and then there are more items. The ones above the separator line reflect the "commonly used items". To better highlight these I was using code like this to individually color those specfic items:
foreach (ListItem item in ddList.Items)
{
if (item.Value == "-1")
unAssigned = true;
if (!unAssigned)
item.Attributes.Add("style", "color:#5558ff");
}
This code works fine EXCEPT that once a PostBack occurs then the highlighting disappears. The items in the dropdown listbox remain (without repopulation) but not the highlighting.
I'm curious why this is happening and whether there's a way for the highlighting to "stick" short of calling this code from the Page_Load event handler every Postback?
I have a web flow (asp.net) which has a drop down and a check box.
When the check box is ticked, I need to disable some fields in that form.
When a specific value is selected from the check box, I need to disable other fields.
I specify the checkbox like this:
<%=Html.CheckBox("IsResponseUnavailable", Model.IsResponseUnavailable)%>
And the drop down like this:
<%= Html.MyDropDownList(string.Format("Questions[{0}].Answer", i), (IEnumerable<SelectListItem>)ViewData["Periods"], Model.Questions[i].Answer)%>
Where MyDropDownList is an extension of Html.DropDownList
I've heard about auto-postback - but unsure how to use it
I am using the captcha from recaptcha.net in my asp.net webform. The webform has a checkbox list which does an auto-postback. Now when I select any of the checkboxes, the pages is posting back and the captcha is refreshing too and gives me a new image and also throws the validation error,"Incorrect word, please enter".how to avoid the refrshing of the image(or captcha) on every postback of the page.I tried using other capctha controls from code project but I need an audio control for my captcha and have tried to use .net speech libraries to produce the audio, but could not succeed.So I am working with the recaptcha instead.
View 5 Repliesmy code as below:
1) I have set EnableViewState = True
<%@ Page Language="VB" MasterPageFile="~/en/en.master" AutoEventWireup="false" CodeFile="product_detail.aspx.vb" Inherits="en_product_detail" EnableViewState="true" %>
2) I have set AutoPostBack & EnableViewState = True
<asp:DropDownList ID="ddl_order" runat="server" AutoPostBack="true" EnableViewState="true">
</asp:DropDownList>
I have set of questions named as 1,a,b,c,d,2,3question '1' has radio button list like below. (a,b,c,d) and '3' are enabled only when user selects something apart rom "Never"number 2 is enabled only if user answers something from question 'd' (which is a checkboxlist)My problem is when user selects "A few times a year from 1 question" and some answer(for example second option as "Frequently" from number 3 which is a radio button list and now user selected differnt answer for question 1 (let say Montly) now answer to 3rd question autoamtically changed to first option in radio button list")
View 4 RepliesWorking on VS2008 with using .vb
I have placed two radiobutton's on simple .aspx page. I didn't used any Update Panel or any javascript on that page also set both radiobutton's AutoPostback="True", But it's not responding as I want.
I made a web part use ASP.NET. There are a listbox and two buttons on it. When you click the Button A, it would add a new item into the listbox.When clicking the Button B, it would postback the list items data. But when you click the button B, the number of listbox number becomes twice.
View 2 Replies