Have a dropdown list with autopostback set to 'yes' have another dropdown list box that will be populated based on the selection of the first dropdown. It works fine until I put a submit botton on the form. When I do it appears to not do the auto postback until the submit button is pushed. Can you have a submit button on a form that has a dropdown with autopostback active.
View 2 RepliesI have a dropdown list which is in updatepanel. I have to fill that dropdown on a client event through javascript which calls __dopostback of the updatepanel and calls its load event.
Problem is that when i submit the form updatepanel_Load event also execute again and it again reset the DropDownLIst which causes the loss of selectedValue in Dropdown.
<asp:UpdatePanel ID="UpdatePanel3" runat="server" OnLoad="UpdatePanel3_Load" UpdateMode="Conditional">
<ContentTemplate>
<asp:DropDownList ID="ddlItems" runat="server" CssClass="dropdown">
</asp:DropDownList>
</ContentTemplate>
</asp:UpdatePanel>
On page Load this dropdown is Empty .... no funtion to fill it.Now the problem is when ever I Fill the Dropdown throught Load of UPatepanel, that UPdatepanel Load event also execute when I submit my page. Actually the solution of javascript is due to a table and on Selection of the table row item it Fills the DropDownList from __dopostback of my updatepanel.
I have button which opens a popup window and that popup window contains a table, when client select some item from that table and close that popup window then I fill my dropdown (in parent or opener page through Ajax, Updatepanel's Load) as further selction option. so dropdown databind is dependent on that tables input.
I have three drop down lists that are all databound to a gridview. When the user selects 1. a school, 2. a house number, and 3. a street from seperate drop down lists, bus stops for that address are displayed in a gridview. Everything works fine. After the user selects a valid school/house number/street combination the gridview automatically displays. I would like to add a "Submit" button and not have the gridview display until this button is clicked.
View 6 RepliesI have a master page with a form which has dropdown list control,text box,radio button controls.The entered and selected values get lost after I clicked on submit button.It goes back to original state when the page first loaded.Any idea why and how to retain these value?
View 9 RepliesI have a Drodownlist , hich is being filled with data from tables at Page Load with the check that Postback is false. Now I want to insert the selected value of dropdownlist to the table, but after pressing the Submit button, its numeric value is getting lost and is substituted with a "" (blank). How do i persist its value.
View 6 RepliesI have 2 SUBMIT button in a form one is display:hidden and one is display:block if user click on SUBMIT button (display:block) then another SUBMIT button {display:hidden} should also submitted.
View 2 RepliesIn ASP.NET when we have multiple input section with required field validator (Like on header for login with userid & Password is required and second on footer for subscription) when we click on subscription login section's userid required field validator activates and say userid required & i can not submit subscription.
when i submit subscription details login section should not have concern with this. how to avoid this conflicts.
In C#/Asp.net I have 2 submit button i.e.
btnOk and btn_Submit
Initially I am doing validating form by clicking on btnOK and in btn_Submit I am inserting record into table. I again want to call btn_Ok event in btn_Submit click event for re-checking validation, if it validates properly thne rest of code of btn_submit should work.
I have a code like this
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
string strConnectionString = ConfigurationManager.ConnectionStrings["SqlServerCstr"].ConnectionString;
SqlConnection myConnection = new SqlConnection(strConnectionString);
myConnection.Open();
string musisim = DropDownList1.SelectedItem.Value;
SqlCommand cmd = new SqlCommand("select B.HESAP_NO FROM YAZ..MARDATA.S_TEKLIF B WHERE B.MUS_K_ISIM = DropDownList1.SelectedItem.Value", myConnection);
Label1.Text = cmd.ExecuteReader().ToString();
myConnection.Close();
i have a customer name as "MUS_K_ISIM" and his number as "HESAP_NO" All i want is, (autopostback is true) automaticly getting label "HESAP_NO" with who has this number "MUS_K_ISIM" in Dropdownlist. How can i do that? Error: Description: An unhandled exception occurred during the execution of the current web request. review the stack trace for more information about the error and where it originated in the code.
When I select the item in 1st dropdownlist, values are fetched from database and want to display in second dropdownlist... but the autopostback is not working for the 1st dropdownlist..
View 1 RepliesI want to show a confirm dialog when the user selects an item in a DropDownList. If the user presses "Cancel", I want to stop the postback. Here is the function I add to the onchange event:
function imitateConfirmUnload(event) {
if (window.onbeforeunload = null)
return true;
return confirm("Are you sure you want to navigate away from this page?
You have unsaved changes
Press OK to continue or Cancel to stay on the current page.");
}
And this is the relevant bit of code in my startup script to add the handler to the event:
[code]...
The problem is that the postback occurs even if the user selects "Cancel". If I move the handler on to the click event, it works. But it feels clunky to me.
Edit
Correction: it doesn't work onclick, because the dialog prevents selection, so when the user selects OK, no change has taken place, and no postback when you want it!
Edit 2
The DropDownList is inside an UpdatePanel so that may affect behavior.
why asp.net does not render a dropdownlist with the autopostback property set to true when using the RenderControl method.
eg
Dim sw As New IO.StringWriter
Dim tw As New HtmlTextWriter(sw)
Dim table As New Table
[Code]...
my output renders the dropdown list without the onchange="javascript:setTimeout('__doPostBack(ddl1','')', 0)" that is generated by asp.net when using the dropdownlist normally.
I really have no idea on this problem on the cascading dropdownlist. I have a cascading dropdownlist that bind with calling the web services.
I wan to do a autopostback to get the value of the Album GUId so that i can query out all the photo list of that album. it is working well if my page without the AlbumGUId query string.
my problem is:
when i redirect from other page and passing the Album GUId querystring to this page, it will display all my photo for this album guid. but when i change the album to Select which should be able to display all the Photos, it cannot display out. It only will work is when i choose another album and then go back to Select then it only can work..
[code]....
Well I have a strange problem.I have a page with 2 DropDownLists on it and a custom web-user-control. The custom web user control has an UpdatePanel within it, and an Ajax Timer control within the UpdatePanel to periodically update a listing of stuff.When I "drop-down" one of the DropDownLists and hover over (not click on) an option while the Timer control within the UpdatePanel asynchronously posts back to the server, the DropDownList "autopostbacks" to the server!
I'm trying to figure out why an asynchronous postback would cause the DropDownList to act as if I selected/clicked on an option so that I can find a way around this issue.Now it's really simple to reproduce this problem. Create a Web User control called "TimerUpdatedListing"...this is the ASPX code markup for the web user control:
<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="TimerUpdatedListing.ascx.vb" Inherits="MyNamespace.TimerUpdatedListing" %>
<div style="width: 150px; height: 150px; overflow: auto; border: solid 1px navy;">
<asp:UpdatePanel ID="anUpdatePanel" runat="server">
[code]...
I have a required field validator to validate a dropdownlist. this dropdownlist is an autopostback one, and it's causevalidation property is set to be false.the issue is, when I select the default item, the validation message shows, but the still do the postback. And after the postback, the message disappers.here is the snippet of codes:
<asp:RequiredFieldValidator ID="ContactMethodRequired" runat="server" ControlToValidate="ContactPreferences"
Display="Dynamic" ErrorMessage="Please choose your contact method"
EnableClientScript="true" InitialValue=""></asp:RequiredFieldValidator> [code].......
i have two dropdownlist in my webform both are filled dynamically in the page_load event
[Code]....
Am using DropDown list. Whenever Autopostback is true it selecting first value of dropdown list...
View 1 RepliesMy dropdownlist having data from database added with the following item:
DropDownList.Items.Insert(0, new ListItem("Please select", "0"));
The sites I mantain are using way too much ViewState and I'd like to reduce that so the size of the page is reduced. I've done a lot to remedy this but I have an issue relating to DropDown lists that use AutoPostbacks.I have a dropdown list with a lot of list items and a good part of the ViewState usage is to hold the list item data. If I disable ViewState and set the AutoPostBack property to true, the page will post back and in the page load I am trying to repopulate the dropdown list with cached data. However, it seems that the SelectedIndexChanged event doesn't fire when EnableViewState="false".Is it possible to make this work without enabling ViewState for the drodown list?
View 6 RepliesI have a DropDownList in a GridView with AutoPostBack="true" and on SelectedIndexChanged fires an event.
[Code]....
Everything works fine across browsers as long as the user is scrolling through the DropDownList using a mouse.In IE8, things start to go haywire when the user is navigating the DropDownList using up/down arrows on the keyboard. The SelectedIndexChange event is fired with nearly every up/down key pressed. In Firefox 3 and Chrome 9, the behavior is more like what I would expect, that the event isn't fired until the user stops on DropDownList selection and hits the enter key.
Is there something that I should be doing in IE, short of setting AutoPostBack="false", so that the event is fired every time the up/down arrows are used on the keyboard?
I have a Gridview that provides the user the student name for a particular class, a dropdown list to enter grades. If a grade of 'U' is given, a textbox appears in which the last day of attendance must be listed.
It works... though not as conviently as it could; the faculty would like to be able to tab from one dropdownlist to next in succession.
On each ddlGrades changes I write the value to the database and if a 'U' was chosen, display the textBox... but I can't figure how to set focus on the next ddlGrades control, or even the same ddlGrades control that initiated the postbock.
Below is my simplified .aspx followed by the codebehind
[Code]....
I am having a problem with dropdownlist auto post back set to true...
In my project I have to hide and display two other dropdown lists depends on selected index change of a main dropdown..
I set the auto postback to true and I am hiding and displaying the dropdowns on user selection...Everthing is working fine..
But I am having a very hard time when user types when the dropdown got focus..this is very annoying situation..if type one word its doing a postback and they are unable to type further...
is there any way to fire this onselectedindex change event on blur or on enter key press...is there a way of doing it with java script or jquery...
I've got some dynamic created buttons in my GridView (adding them OnDataBound), but when I click some button in makes a strange PostBack and all my added button desappears... Also Click event doesn't happens.
How to :
1) Make my dynamic Button inside GridView do not disappear after clicking one of them.
2) Make this click methode works somehow ...
Im making it this way :
B.Click+=EventHandler(fun(_,_) : void { this.LabelCurrentCategory.Text="AAAA"; });
I am using an asp.net autopostback enabled dropdown list. Here i want to restrict the autopostback property fot the value "Select" in the ddl. I have used javascript for this purpose. but not working.My code look like this.
[Code]....
<asp:TextBox ID="TxtDeptName" runat="server" class="formField"
Width="188px" AutoPostBack="True"></asp:TextBox>
<asp:Button ID="Save" runat="server" CssClass="ibutton" Text="Save"
Height="30px" Width="70px" />
The problem is, when i type something in Departmetn textbox, and click on the button, you have to click twice to get the actual results up. This is because the first click is doing the "AutoPostBack" part from the text box, and then you have to click again to make the actual click postback to happen.