I have a simple vb.net page. The first control on the page is a dropdownlist that the user selects from. The second is a text box with a search button. When search is clicked, a third control (another dropdownbox) is populated. BUT, whenever that search button is clicked, the first dropdownbox seems to refresh, and I loose the selection that the user made.
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I am struggling on stop page refreshing when the image button is clicked.How i can i achieve this?I used triggers,javascript,.
View 6 Replieshow to get value of DropDownlist after Button Clicked ,when using static function?
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I have an ASP.NET DropDownList with AutoPostBack=true and EnableViewState=false. I have a button on the page that does nothing. If I change the selection in the ddl, it posts back , which is expected. If I click the button, the page posts back and the ddl's SelectedIndexChanged fires. Why does it get fired?
View 3 RepliesI have an ajax accordion with 3 panes. In the first pane I have tree. When I click an item in the second pane, I want the first pane to stay where it was before I clicked the item. Is there a way to keep maintain the content in all panes that are not in use? This seems to work without any additional code. I had something else incorrect that was preventing from working.
View 1 RepliesThis is my setup: I've got a dropdownlist of people and a linkbutton next to it to add a person. the linkbutton makes an update panel appear. When clicking save, I want the data to be saved and the new person be selected in the dropdown. As far as I can tell, I have done this properly. After I save the data I refresh the dropdownlist and take the new person's value and set it as the selected value. When stepping through, it shows the ddl with the new person and the new person selected! BUT, when the page comes back, the ddl is unchanged, ie NOT refreshed. I thought it might be something with the Update Panel but I got a similar setup to work on another page! It also works on a nested Update Panel (not shown in the following code). Can you think of why this "deception" is happening?
Here is some of my code.
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I am having trouble with a dropdownlist and it's values not getting updated after postbacks.
Situation: I have an ASPX page that contains 2 user controls (UC1 and UC2). When the page first loads, controls on both UCs are set properly. My problem comes from the fact that when a dropdownlist on UC1 is changed, I need to reload a dropdownlist on UC2 (based on
the new value). I am raising an event from UC1 to the parent page when the dropdownlist value is changed and inside this method I am telling UC2 to reload it's dropdownlist based on the new value. When stepping through the sequence of events using the debugger, the values in the datatables and dropdownlists (item count) are 100% correct but after running through the logic, the dropdownlist on the page still has it's old values.
The initial values for the dropdownlist in UC2 are populated in Page_Load of the ASPX page, and nothing is done to the dropdownlist in Page_Load (!Page.Postback) of either the ASPX page or UC2. The only way I would like the values to change is when the event from UC1 is raised back to the page.
I have found a couple of other forum posts out there that had the same problem but I've tried those resolutions and nothing has worked. In the following examples, the value dt is the 'new' datatable that I wish to bind to the dropdown.I read that before rebinding the dropdownlist, that the Items need to be cleared and the SelectedValue should be set to NULL:
this.dropdownlist.DataSource = dt;
this.dropdownlist.Items.Clear();
this.dropdownlist.SelectedValue =[code]....
I have a asp page with tow buttons search adn enter and asp required field validator in it, what I am trying to do is validate the input only when the enter button is clicked not the search button, right now when the search button is clicked it validates and throws an error.
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The whole thing is in a form, and it doesnt postback when this button is clicked. Im no good with javascript, but i got a feeling thats not the problem.
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View 2 RepliesHow to make a link button visible after another button has been clicked in asp.net(vb) in button_click()
it says error as "Object reference not set to an instance of an object."
i've done this in my code
Protected Sub InsertButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim receipt As LinkButton = FormView1.FindControl("LinkButton1") [code]....
Obviously I am a total noob and this is simple to some of you, but I can not figure out why the rest of the sub works, but the button1.Text="Uploading, Please Wait..." seems to be completely ignored.
The button is supposed to change text when clicked but no method I have tried works with my page.
Here is my simple upload form page:
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I have a data grid and and bind a column a Dropdownlist. when i select the Item of Dropdown list the page is Refrehed. How can i stop this. I dont want use Update panal.
View 2 RepliesI have repeater control on page which bind with sql data source.i have dropdown to filter the records of repeater on button click event it refresh complete page i just want to show a wait message to user and just refresh repeater data instead of complete page refresh.i do not want to use ajax update panel.
View 1 RepliesI have two buttons on a messaging form. A "To" (who's going to get the message) and "Cc" (who's going to get a copy). The user choose the names from a listbox that popup when the "To" button is clicked. When the user click the "Ok" button the name is moved to the "To" label.If the user now wishes to CC someone how do I get the "ok" button to know I've click the "CC" and not the "To" and to put the name on the "CC" label?I tried switch statement but was not working
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I am created one gridview which contains image button.If i click image button call javascript using
onclientclick event from that calling same url page rebinding gridview again...while rebinding page
My web page consist of GridView with 2 columns:
Column 1 : SesStartTime[BoundField]
Column 2: Status [TemplateField] with DropDownList inside
When user select on the DropDownList i need to check the selected row's SesStartTime must earlier that current time.
Else i need to prompt alert to user.
I dont know how to work on this. Can someone guide me on this or provide me with sample of code.
Below is my aspx page code:
<%@ Page Language="VB" MasterPageFile="~/MllpMain.master" AutoEventWireup="false" CodeFile="LearnersDetail.aspx.vb" Inherits="WEBUI_Learners" %>
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TagPrefix="asp" %>
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I 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:
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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.
i have a asp.net web page in which i have few button controls i have published the web pages & published it in 2 different servers in one of the servers its working fine , but on the otehr one the button controls on the web pages , i am not able to click it, no event gets fired on click not able to trace the cause as on bothe the systems the files(pages/code are same)
View 5 RepliesI have a url whose query strings are concatenated based on selected items on a form, I need to do a post to this url, but an imagebutton control has to be clicked for the post to occur. I put the PostBackUrl property of the imagebutton inside the event of the image button, hence causing it to be clicked twice before eventually posting the url... but i really need to click once but this aint working. I know why its clicking twice, tried calling the url with javascript but it wasnt working.
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I have 3 buttons on a form:
<asp:Button ID="AdresVolgButton1" runat="server" Text="1" Width="30px" Visible="False" Height="26px" OnClick="AdrsVolgNrBtn_Click" CausesValidation="False" />
I'm using telerik radgrid in my web form.When i add new row in this grid, the new irow only display in my grid. After click refresh button the full rows are display.
View 2 RepliesI have a page with lots of panels on it. Some of the panels are user controls and some are just on the page. I have a form on the page where you can add users and a gridview which is a user control showing a list of users.When a new user is added on the form I want to do gridview.databind() for the gridview in the user control. Does anyone know how to do this?
View 3 RepliesI have 4 Image buttons on my user control and on the click of that Image button, I am opening new pop up window. I had used update panel but still it is refreshing the page. I don't want to refresh my page on the click.
<asp:UpdatePanel ID="SharePanel" runat="server">
<ContentTemplate>
<div class="full">
<h3>Share :
<asp:ImageButton ID="imgFB" runat="server"
ImageUrl="http://localhost:49524/mysite/Images/facebook_ico-1.gif"
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i have a dropdownlist whose autopostback = true , but for some selected text i do want tht the autopostback really shouldnt fire .. using jquery...
however i hav really tried out using removeAttr() to remove attribute and then evt.preventDefault() which ofcourse should prevent the postback...
also tried to set the evt.returnValue = false so that the value returned by the dropdownlist change event is false ...
d code snippet i tried out is like :
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none of the above resulted in stopping the postback..
