I have below structure in my asp.net application.
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<div id="overlay"></div>
<asp:Panel ID="pnlMain" runat="server" Visible="true">
<asp:UpdatePanel ID="upProfile" runat="server" UpdateMode="Always">
<ContentTemplate>
<div>
<table>
</table>
</div>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="upAttachment" runat="server" UpdateMode="Always">
<ContentTemplate>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Panel>
<asp:Panel ID="pnlSuccessMessage" runat="server" >
<asp:Label ID="lblSuccessMessage" runat="server"></asp:Label>
</asp:Panel>
I have different textfields and dropdowns in the table of upProfile updatepanel and file upload control in upAttachment updatepanel. Now when I select one radio from the same update panel, I am getting below error and the upAttachment does not show up on page.
Uncaught Error: Sys.InvalidOperationException: Could not find UpdatePanel with ID 'MainContent_upAttachment'. If it is being updated dynamically then it must be inside another UpdatePanel.
I have searched a lot and tried below different things, but still it is not working
1. Set the upAttachment UpdateMode to Conditional.
- In this case, it does not throw error, but the file upload control which is inside that updatepanel, it does not show up
2. Place the upAttachment updatepanel inside another updatepanel, but that too is not working.
I don't know what to do in this case. Can anyone help me on this?
Related
I am currently running up against a problem with the UpdatePanel. One of my pages has two User Controls I'll call A and B.
The User Control A has an UpdatePanel containing several ASP TextBox.
<asp:UpdatePanel ID="upA" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="true" style="position: relative;">
<ContentTemplate>
<-- content here -->
</ContentTemplate>
</asp:UpdatePanel>
The User Control B has an UpdatePanel containing a Panel and an AjaxModalPopup linked to it. In the Panel, there is a Repeater and an ASP button.
<asp:UpdatePanel runat="server" ID="upB" UpdateMode="Conditional">
<ContentTemplate>
<asp:Button ID="btnActivePopupContainer" runat="server" Style="display: none;" />
<asp:Panel ID="pnlPopupContainer" runat="server" CssClass="modalPopup modalPopupDraggable" Style="display: none;" Width="750px">
<asp:UpdatePanel ID="upPopup" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Panel runat="server" ID="pnlHeader" class="header">
<asp:Label ID="Label1" runat="server" Text="<%$ Resources:global, AttentionPopup %>"></asp:Label>
</asp:Panel>
<article>
<asp:Repeater runat="server" ID="rptPopup" OnItemDataBound="rptPopup_ItemDataBound">
<ItemTemplate>
<-- Content -->
</ItemTemplate>
</asp:Repeater>
</article>
<footer>
<div class="or-spacer">
<div class="mask"></div>
</div>
<div class="footer">
<asp:Panel runat="server" ID="pnlBtnBug">
<asp:Button ID="btnOK" runat="server" CssClass="btn yes" Text="<%$ Resources:global, Ok %>" OnClick="btnOK_Click" />
</asp:Panel>
</div>
</footer>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Panel>
<ajax:ModalPopupExtender ID="popupContainer" runat="server" BackgroundCssClass="modalBackground" PopupControlID="pnlPopupContainer" TargetControlID="btnActivePopupContainer" Drag="true" PopupDragHandleControlID="pnlHeader"></ajax:ModalPopupExtender>
</ContentTemplate>
When the user clicks the OK button of the UserControl B, it triggers a delegate that calls a method in the UserControl A that performs updating of some fields and the update method of the UpdatePanel "upA".
The delegate:
//Delegate Call When the user clicks the ok Button
popup.okHandler = (x) =>
{
A.ChooseOpticienCode(x.Value);
};
in the UserControl A's code behind:
public void ChooseOpticienCode(string code)
{
<-- some treatments -- >
upOpticien.Update(); <-- crash here
}
When the method upOpticien.Update() is called, I get this error:
System.InvalidOperationException: The Update method can only be called on UpdatePanel with ID 'upOpticien before Render.
I don't understand why I get this error. I tried to set the UpdateMode of the UpdatePanel to "Always", the application no longer crashes but the fields are not updated.
ideas ?
I finally found how to fix my problem. Instead of calling the delegate directly, I must use the InvokeMember function so that the delegate is executed correctly and can edit the various fields and update the UpdatePanel
page.GetType().InvokeMember(OkHandler.Method.Name, System.Reflection.BindingFlags.InvokeMethod, null, page, new[] { this });
(here, OkHandler is my delegate)
However, note that using an anonymous method will not work, it's imperative that the delegate points to a method with a name for InvokeMember works.
I have used AJAX Rating control for star rating. I am trying to achieve rating without page postback, therefore I placed inside update panel but still page is used to reload.
Below is aspx page code:
<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<cc2:Rating ID="Rating1" AutoPostBack="true" OnChanged="OnRatingChanged" runat="server"
StarCssClass="Star" WaitingStarCssClass="WaitingStar" EmptyStarCssClass="Star" FilledStarCssClass="FilledStar">
</cc2:Rating>
<div style="text-align: left; padding-right: 2px;">
<asp:Label ID="lblRatingStatus" runat="server" Text=""></asp:Label>
</div>
</ContentTemplate>
</asp:UpdatePanel>
Change update mode of updatepanel from conditional to always and set ChildrenAsTriggers="True". Should work in your case.
Let me know if it doesn't work.
I have an aspx page in which I have Ajax UpdatePanel which has a AJAX Tabcontainer which has 5 tab. In First tab I have a DropDownList for ProductID. In the second tab I have used a UserControl whose parameter needs to be reflected based on productID. I want to Access the DropDownList ProductID in the user control which I am not getting. Part of my code is
DropDownList IDList = (DropDownList)(this.Parent.FindControl("ProductID");
this is not working and I am getting NULL. I also have Tried
DropDownList IDList = (DropDownList)(this.Page.FindControl("ProductID");
Please tell me how I can do this.
As asked Part of necessary code is
<asp:UpdatePanel ID="UpdatePanelTankFormula" runat="server">
<ContentTemplate>
<asp:tabcontainer id="TabContainerTankFormula" AutoPostBack="true" runat="server" OnClientActiveTabChanged="clientActiveTabChanged" activetabindex="0" style="width:100%;">
<asp:TabPanel ID="InputDataTab" runat="server" HeaderText="Data Input">
<ContentTemplate>
<asp:DropDownList id="TankNameCombo" DataTextField="TankName" runat="server" AutoPostBack="true" DataValueField="customertankid" width="200px" onclick="javascript:SetHiddenField();"> </asp:DropDownList>
</ContentTemplate>
</asp:TabPanel>
<asp:TabPanel ID="LacticAcidAdditionTab" runat="server" HeaderText="Lactic Acid Addition">
<ContentTemplate>
//My user control
<UC:TankNote runat="server" ID="LaticTankNotesUC" GetNoteType="LAC" MEQMode="False"></UC:TankNote>
</ContentTemplate>
</asp:TabPanel>
</asp:tabcontainer>
<ContentTemplate>
</asp:UpdatePanel>
Now in the Code Behind of this User Control I want to access this DropDownList, which I am not getting. For the fix I have define a Public function that return the value of this list. But its a fix not solution.
You will have something like this in tab control.
<cc1:TabContainer ID="TabContainer1" runat="server">
<cc1:TabPanel ID="TabPanel1" runat="server">
<ContentTemplate>
<asp:DropDownList id="dropdownlist1" runat="Server"/>
</ContentTemplate>
</cc1:TabPanel>
So first you need to find tabPanel1 then find dropdownlist1 like following.
TabContainer TabContainer1= (TabContainer)(this.Page.FindControl("TabContainer1");
if (TabContainer1!=null){
TabPanel TabPanel1= (TabPanel)(this.TabContainer1.FindControl("TabPanel1");
if(TabPanel1 !=null){
DropDownList dropdownlist1= (DropDownList)(this.TabPanel1.FindControl("dropdownlist1");
}}
I have a page name ask.aspx
I have 4 list views in that page which are binding at the time of page load event.
now when ever i click on the items of list view i get the whole page refreshed.
I have used the update panel but for some reasons it is not working
The code for the same is given below.
aspx page
enter code here
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel2" runat="server" ChildrenAsTriggers="true" UpdateMode="Conditional">
<ContentTemplate>
<fieldset>
<legend><asp:Label ID="Label1" runat="server"></asp:Label></legend>
<ul class="tags">
<asp:ListView ID="ListView1" runat="server" OnItemCommand="ListView1_ItemCommand" >
<ItemTemplate>
<li><asp:LinkButton ID="LinkButton2" runat="server" CommandArgument='<%# Eval("CategoryId") %>'><%# Eval("Name") %></asp:LinkButton></li>
</ItemTemplate>
</asp:ListView>
</ul>
</fieldset>
</ContentTemplate>
<Triggers></Triggers>
</asp:UpdatePanel>
ending the content template and update panel.
similarly for the other three listviews.
at cs page
some calculations are taking place.
Now i dont want the page to refresh every time.
what should be done.
please suggest.
Remove childrenastrigger property and set updatemode=always
I have an UpdatePanel in a Repeater.
There are a few CheckBoxes in the UpdatePanel with AutoPostBack="true"
There is a Label in the UpdatePanel. I set the Text value of the label in RepeaterName_ItemDataBound as it runs on every item generated.
<asp:Repeater ID="Repeater1" runat="server" DataSourceID="XmlDataSource" OnItemDataBound="R1_ItemDataBound">
<ItemTemplate>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<div>
<asp:Label ID="DateTimeLabel2" runat="server" Text="Label"></asp:Label>
<asp:Panel ID="panID" CssClass="actionicon_normal actionicon_compare" runat="server">
<%#XPath("ID")%>
<asp:CheckBox ID="chkID" runat="server" AutoPostBack="true" />
</asp:Panel>
</div>
</ContentTemplate>
</asp:UpdatePanel>
</ItemTemplate>
</asp:Repeater>
I want the CheckBoxes to automatically update the UpdatePanel as there were no repeater around, but possibly because the OnItemDataBound does not fire on every AsyncPostBack, nothing gets updated.
What is the proper way to do this?
In the onclick (JavaScript) call this function __doPostBack('idOfUpdatePanel', '');
Javascript and UpdatePanel