AJAX :: DropDownExtender Drop Down Hidden Event?
Jan 27, 2011
I would like to Post back an update panel after the drop down is hidden.
I found some javascript that will keep the panel open wile the user interacts with the CheckBoxList i have inside. Currently I am updating the panel when the function stops blocking the closing event. This is not firing every time. So i am wondering if there is a java script event i can catch to fire the post back after the drop down is hidden and if someone can provide a simple example of doing so. The code inside the event i got covered, binding to the event is ware i am lacking.
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Similar Messages:
Jan 28, 2010
I have a label with a dropdownextender, and below it I have a gridview. When it drops down, it should go on top the gridview , but instead half of it is hidden because it goes behind the gridview. how can that be taken care of?
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Jan 25, 2011
I am trying to keep the drop down open till mouse out.
I have found a hand full of sample scripts that are all trying to do this. I did manage to keep the drop down open while the user clicks on the check boxes.
[Code]....
I would like to instead of just removing the event handler also trigger the "close" event for the drop down list on mouse out. Not the JS expert so i dont know ware to start.
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Jan 22, 2011
This is what I see when I click on arrow which is an image in DropArrowImageUrl - UI is weird. Changing image does not help. I am sure that it should be a common problem. Code is very simple:
<asp:Image ID="_targetImage" runat="server" ImageUrl="../Images/Actions.png" />
<ajaxToolkit:DropDownExtender ID="_dropDownExtender" runat="server" DynamicServicePath=""
Enabled="True" DropDownControlID="_panelItems" DropArrowImageUrl="../Images/DropArrow.png"
TargetControlID="_targetImage">
</ajaxToolkit:DropDownExtender>
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Aug 31, 2010
I use DropDownExtenders everywhere in my project, but it bothers me that it's not visible all the time. It looks like an usual TextBox :-(
<script
type="text/javascript">
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Aug 20, 2010
So I got 2 updatepanels on my page. In one there is a Timer which updates for example a label. In the other one there is a dropdownextender. Everytime the timer ticks while the dropdown menu is displayed the menu disapears. I attached the sample code below....any insights on this? And yes, the dropdown and the label need to be in two seperate updatepanels....
[Code]....
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Oct 7, 2010
Currently, when you click mouse on a control, you see all options. However, I need to be able to see all options when mouse is just over the control.
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May 27, 2010
<br/>
<br/>
in my aspx page i have this code:
<br/>
<br/>
<asp:DropDownExtender DropArrowBackColor="White"
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Jan 5, 2010
I need to perform actions (e.g. hide panels) when clicking on the dropdownextender arrow - before the dropdown panel is being displayed.
How should I perform this? should I use onclientpopulated?
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Aug 2, 2010
Using cascading dropdown extender we have to define web method. In that web method does the parameters that we declare should match names like "knownCategoryValues","category" etc ? Suppose if we write "knownCategoryValues1" insteed of "knownCategoryValues" then why my webmethod is not called ?
And if i give "knownCategoryValues" then it is called ?For the First time i have seen parameters name matters in Method parameters list. But why in this case different naming causes problem ?
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Oct 7, 2010
I am using the following code:
<ajaxToolkit:DropDownExtender ID="TextBox1_DropDownExtender" runat="server" DynamicServicePath=""
Enabled="True" DropDownControlID="panelItems" DropArrowImageUrl="~/Images/DropArrow.png"
DropArrowWidth='26' TargetControlID="Image1">
</ajaxToolkit:DropDownExtender>
However, it does not set the width of DropArrowImage correctly.
I found the following post http://ajaxcontroltoolkit.codeplex.com/workitem/24194 but I am not sure of where to find DropDownBehavior.js to implement proposed solution.
Is it possble somehow to set the widht of DropArrow?
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Jun 13, 2010
the dropdownextender works fine until I scroll down the page, see the following screenshots.
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May 25, 2010
I have the code below to implement a dropdownlist with checkboxes. My problem is that every time i click a checkbox the dropdownlist closes and i need to reopen it to select more checkboxes. How do i make it so the dropdownlist dosn't close until i click off of it?
[code]....
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Oct 18, 2010
[Code]....
C# code:
[Code]....
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Nov 8, 2010
i always get this error when ever i use DropdownExtender,Additional information:The Controls collection cannot be modified because the control contains code blocks
i.e. <% ... %>).this is my ASPX Code
[Code]...
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Apr 23, 2010
The following code listed on the bottom is a dropdown extender contained with a listview insert template. The code works fine however int VS 2008 Debug mode, its throwing the exception:Microsoft JScript runtime error: Sys.InvalidOperationException: Handler was not added through the Sys.UI.DomEvent.addHandler method.If I click ignore or continue, the taret label is properly populated with the appropriate value. Has anybody encountered this and is
<td>
<asp:Label ID="lblTest" style="height:25px;border: solid 1px black" runat="server" Text='<%#Bind("TestCode") %>' Width="90%"></asp:Label>
<asp:DropDownExtender ID="ddExtTestCode" runat="server" TargetControlID="lblTest" DropDownControlID="pnlTestCode"></asp:DropDownExtender>
<asp:Panel ID="pnlTestCode" runat="server" style="display : none; visibility: hidden;">
<asp:LinkButton runat="server" ID="Option1" Text="12345-New York" CommandArgument="12345" OnClick="OnTestCodeSelect"></asp:LinkButton>
<asp:LinkButton runat="server" ID="Option2" Text="45678-New Jersey" CommandArgument="45678" OnClick="OnTestCodeSelect"></asp:LinkButton>
</asp:Panel>
</td>
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Jul 30, 2010
I am working on Scott Mitchell's ASP.Net in 24 hours book. I am running into what looks like a simple problem that is getting the best of me.
When a page loads, the UserId of the currently logged in user will be retrieved in the page Load event and placed into the Text value of a Label. But, when the page opens when I am running the app, I am getting an error in the lower left corner of the browser. When I open up the error message, I see this:
Webpage error details
Message: 'UserIDValue' is undefined
Line: 92
Char: 1
Code: 0
URI: http://localhost:51035/PhotoAlbum24hrs/PhotoAdmin/ManageCategories.aspx
Here is the web page's Load event (VB) code:
[Code]....
Here is line 92 and the surrounding lines from the page source when I run the app:
[Code]....
This matches what is in Scott's book. (Or else I have been looking at it too long and have missed something.)
If I make the UserId Label visible, I can see the logged in user's ID displayed on the page. So, what is going on here? Why am I getting this error?
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May 26, 2010
I recently came across the AsyncFileUpload control in the latest (3.0.40412) release of the ASP.Net Ajax Control Toolkit. There appears to be an issue when using it in a hidden control that is later revealed, such as a <div> tag with visible=false.
Page code -
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="act" %>
<act:ToolkitScriptManager runat="server" ID="ScriptManager1" />
<asp:UpdatePanel runat="server" ID="upnlFileUpload">
<ContentTemplate>
<asp:Button runat="server" ID="btnShowUpload" Text="Show Upload" />
<div runat="server" id="divUpload" visible="false">
[code]...
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Jan 4, 2011
I'm using VS 2010, .net 4, vb.net. I have an asp.net site and on a page have 2 drop down lists.
<asp:DropDownList ID="ddlClassIndex" runat="server" AutoPostBack="true" />
<asp:DropDownList ID="ddlClassQBankList" runat="server" AutoPostBack="true" />
When the page first loads i can click on either of these, select an item and the event fires correctly. When i select either of the drop down boxes as a second operation, the first drop down, ddlClassIndex.SelectedIndexChanged fires. What have i done wrong that this would be happening. I do a page.ispostback=false check when the page loads and we are also using master pages.
Private Sub LoadClass()
Dim Os As List(Of Dempsey.OldeTestClassIndex) = Nothing
Dim Oc As New Dempsey.OldeTestClassIndex_Controller
Os = Oc._GetClassIndexData(0)
Dim X = From w In Os
Where w.Active = 3
Select w
Os = X.ToList
With Me.ddlClassIndex
.DataSource = Os.OrderBy(Function(o) o.ClassTitle)
.DataTextField = "ClassTitle"
.DataValueField = "tblClassIndexID"
.DataBind()
.Items.Insert(0, New ListItem("Choose Class Title", "0"))
.SelectedIndex = 0
End With
End Sub
Protected Sub ddlClassIndex_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlClassIndex.SelectedIndexChanged
If Me.ddlClassIndex.SelectedIndex > 0 Then
If ClassHasCategories(Me.ddlClassIndex) = True Then
Response.Redirect("AddEditQBank.aspx?ClassIndexID=" & Me.ddlClassIndex.SelectedItem.Value)
Else
Me.lblStatus.Text = "No Categories"
Me.lblStatus.Visible = True
End If
End If
End Sub
Private Sub LoadClassQBankList()
Dim ary As New ArrayList
ary.Add(1)
ary.Add(2)
ary.Add(3)
Dim Os As List(Of Dempsey.OldeTestClassIndex) = Nothing
Dim Oc As New Dempsey.OldeTestClassIndex_Controller
Os = Oc._GetClassIndexData(0)
Dim X = From w In Os Join l In ary On w.Active Equals l
Where w.KT = 1 And w.RandomTest = 1
Select w
Os = X.ToList
With Me.ddlClassQBankList
.DataSource = Os.OrderBy(Function(o) o.ClassTitle)
.DataTextField = "ClassTitle"
.DataValueField = "tblClassIndexID"
.DataBind()
.Items.Insert(0, New ListItem("Choose Class Title", "0"))
.SelectedIndex = 0
End With
End Sub
Protected Sub ddlClassQBankList_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddlClassQBankList.SelectedIndexChanged
If Me.ddlClassQBankList.SelectedIndex > 0 Then
Response.Redirect("ClassQBankList.aspx" & "?ClassIndexID=" & Me.ddlClassQBankList.SelectedValue)
End If
End Sub
~~~~~~~~~~
More info
I am checking for page postback. When i select from the drop down, it redirects to a different page. When i click the back button and selected another value in the other drop down, both SelectedIndexChanged fire. So i do i need to do something with viewstate? before i redired to the other page?
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Jan 5, 2010
am using drop down changed event in my aspx page.after published the loading time increased while in the dropdown selected changed event.
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May 18, 2010
i n using java script function to showalert msg .function is as follows
function ShowAlertForScaleResolution()
{
var ddlScale= document.getElementById('<#=ddlScale.ClientId #>');
var ddlResolution= document.getElementById('<#=ddlResolution.ClientId #>');
if(ddlScale.value=="0" || ddlResolution.value=="0")
{
alert("Please select valid Scale and Resolution");
}
return false;
}
my dropdown source code is--
<asp:DropDownList ID="ddlBlockName" onchange="return ShowAlertForScaleResolution();"
runat="server" Width="150px" AutoPostBack="True" OnSelectedIndexChanged="ddlBlockName_SelectedIndexChanged">
</asp:DropDownList>
when i m selecting the BlockName withought selecting any item from ddlScale and ddlresolution then i m showing alert msg.
My Problem is that when i m selecting the details of scale and resolution dropdown then its not showing any errormsg. But its not firing the selected index chaged event of Drop down .
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Apr 27, 2010
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.
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Sep 6, 2010
I have created a dynamic grid view using Itemplate .now i have also created a dynamic drop down list in the grid . how to create a event handler for on selectedindexchange .
i created a slectedindexchange event but it didnt work .the control never passes to the event ?
what to do create a event handler
[Code].....
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Feb 23, 2010
I have created a Web User Control and convert it into Web Custom Control and add it in Tool Box of Visual Studio. When i drag and drop this web custom control from tool box, i want to execute some sql for that web Control. How do i write a code in Web User Control so that it will execute on drag and drop of Web Custom Control prepared from this Web User Control?
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Oct 6, 2010
Right now my ASP page has a text box and a submit button, what I am trying to do is once the user hits the submit button load a drop down list.
The drop down list should not be visible before the submit button is pressed
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