RadioButton inside Update Panel causing postback - c#

I am putting the following controls inside an update panel so that the whole page does not refresh. When clicking the button, the page does not refresh but when I try to change the radio button, the page refreshes and causes a full postback. Here is my code:
<ajaxToolkit:ToolkitScriptManager ID="ToolkitScriptManager" runat="Server" EnablePartialRendering="true" />
<asp:UpdatePanel ID="updatePanelToggle" runat="server">
<ContentTemplate>
<asp:RadioButton ID="radioOn" AutoPostBack="true" runat="server" GroupName="toggle" Text="On" OnCheckedChanged="radioOn_CheckedChanged" />
<asp:RadioButton ID="radioOff" AutoPostBack="true" runat="server" GroupName="toggle" Text="Off" OnCheckedChanged="radioOff_CheckedChanged" />
<asp:Button ID="testButton" runat="server" OnClick="mybutton_click"/>
</ContentTemplate>
</asp:UpdatePanel>


Depending on your requirement you can control post backs by adding triggers. Use AsyncPostBackTrigger when you want to update only the update panel content. If you need full post back use PostBackTrigger.
<asp:UpdatePanel ID="updatePanelToggle" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:RadioButton ID="radioOn" AutoPostBack="true" runat="server" GroupName="toggle" Text="On" OnCheckedChanged="radioOn_CheckedChanged" />
<asp:RadioButton ID="radioOff" AutoPostBack="true" runat="server" GroupName="toggle" Text="Off" OnCheckedChanged="radioOff_CheckedChanged" />
<asp:Button ID="testButton" runat="server" OnClick="mybutton_click"/>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="radioOn" />
<asp:AsyncPostBackTrigger ControlID="radioOff" />
<asp:PostBackTrigger ControlID="testButton" />
</Triggers>
</asp:UpdatePanel>

Related

ID not found even already declared C# ASP Update Panel Click Trigger

A control with ID 'contactButton' could not be found for the trigger in UpdatePanel 'contactUpdatePanel'.
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />
<asp:UpdatePanel ID="contactUpdatePanel" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:ListView ID="contactList" runat="server">
<ItemTemplate>
<asp:Panel runat="server">
<asp:Label ID="contactLabel" runat="server" Text='<%# Bind("Number") %>' ></asp:Label>
<asp:Button OnClick="contactButton_Click" ID="contactButton" runat="server" Text="Assign"/>
</asp:Panel>
</ItemTemplate>
</asp:ListView>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="contactButton" EventName="Click" />
</Triggers>
</asp:UpdatePanel>

Just remove this line because Listview and button are not outside the update panel so it will work automatically.
<Triggers>
<asp:AsyncPostBackTrigger ControlID="contactButton" EventName="Click" />
</Triggers>
Your final code
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />
<asp:UpdatePanel ID="contactUpdatePanel" runat="server" UpdateMode="Always">
<ContentTemplate>
<asp:ListView ID="contactList" runat="server">
<ItemTemplate>
<asp:Panel runat="server">
<asp:Label ID="contactLabel" runat="server" Text='<%# Bind("Number") %>' ></asp:Label>
<asp:Button OnClick="contactButton_Click" ID="contactButton" runat="server" Text="Assign"/>
</asp:Panel>
</ItemTemplate>
</asp:ListView>
</ContentTemplate>
</asp:UpdatePanel>

AsyncPostback Trigger - Textbox value not getting sent back

My UpdatePanel
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"
EnablePageMethods="true"></asp:ScriptManager>
<asp:UpdatePanel ID="up1" UpdateMode="Conditional"
runat="server" ChildrenAsTriggers="false">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtName"
EventName="TextChanged"/>
</Triggers>
<ContentTemplate>
<asp:TextBox ID="txtName" runat="server"
AutoPostBack="true" OnTextChanged="txtName_TextChanged" />
<asp:TextBox ID="txtPhone" runat="server" AutoPostBack="true" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
Why isn't the value of my textbox (txtName) getting sent back to the server when it loses focus? The async postback happens but no value.

EventName should be EventName="TextChanged".
TextChanged is default for TextBox control, so you don't even need to set it.
AsyncPostBackTrigger.EventName Property
<asp:ScriptManager ID="ScriptManager1" runat="server"
EnablePageMethods="true"></asp:ScriptManager>
<asp:UpdatePanel ID="up1" UpdateMode="Conditional"
runat="server" ChildrenAsTriggers="false">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="txtName"
EventName="TextChanged"/>
</Triggers>
<ContentTemplate>
<asp:TextBox ID="txtName" runat="server"
AutoPostBack="true" OnTextChanged="txtName_TextChanged" />
<asp:TextBox ID="txtPhone" runat="server" AutoPostBack="true" />
</ContentTemplate>
</asp:UpdatePanel>
Code Behind
protected void txtName_TextChanged(object sender, EventArgs e)
{
string name = txtName.Text;
}

How to stop UpdatePanel when i click link button from causing whole page postback

How to stop UpdatePanel when I click link button from causing whole page postback?
UpdatePanel code:
<asp:UpdatePanel ID="panel_update" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:Label ID="comment_sub" runat="server" Text='<%#Eval("review_headline") %>/>
<asp:Repeater ID="repeat" runat="server" OnItemDataBound="repeat_ItemDataBound" >
<HeaderTemplate>
<div class="top_review">
<h3>TOP REVIEWS</h3>
<a class="view_all">View all reviews(<%=top_view%>)</a>
</div>
</HeaderTemplate>
<ItemTemplate>
<asp:Label ID="lblSubject" runat="server" Text='<%#Eval("commented_by") %>' Font-Bold="true" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID ="link1" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID ="link2" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID ="link3" EventName="Click" />
</Triggers>
</asp:UpdatePanel>

Set ChildrenAsTriggers="true" on your UpdatePanel control. closing tag for update panel should be

UpdatePanel Trigger Error. Could not find an event on associated control for the trigger in UpdatePanel

I am having trouble with asp:UpdatePanel and Trigger of ASP.NET WebForms. Trigger could not find the event on my UpdatePanel. I've seen a lot of examples and I copied their implementations but could not get it right. I'm totally new in WebForms. Please help. Thank you.
<tr>
<td class="label1">Will use ETL?</td>
<td>
<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="updatePanel1">
<ContentTemplate>
<asp:RadioButtonList ID="useEtl" runat="server" RepeatDirection="Horizontal" Width="120" OnSelectedIndexChanged="useEtl_SelectedIndexChanged">
<asp:ListItem Text="Yes" Value="1" />
<asp:ListItem Text="No" Value="0" />
</asp:RadioButtonList>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td class="label1">ETL Box</td>
<td>
<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="updatePanel2">
<ContentTemplate>
<asp:TextBox ID="etlBox" runat="server"/>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="useEtl" EventName="OnSelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
</td>
</tr>

change your code as follows:
<asp:AsyncPostBackTrigger ControlID="useEtl" EventName="SelectedIndexChanged" />
the event name you mentioned was wrong that's the reason for not working.
you can also try the following code for the same
UpdatePanel1.Triggers.Add(new AsyncPostBackTrigger()
{
ControlID = useEtl,
EventName = "SelectedIndexChanged", // this may be optional
}

td>
<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="updatePanel1">
<ContentTemplate>
<asp:RadioButtonList ID="useEtl" runat="server" RepeatDirection="Horizontal" AutoPostBack="true" Width="120" OnSelectedIndexChanged="useEtl_SelectedIndexChanged">
<asp:ListItem Text="Yes" Value="1" />
<asp:ListItem Text="No" Value="0" />
</asp:RadioButtonList>
</ContentTemplate>
</asp:UpdatePanel>
</td>
<td class="label1">ETL Box</td>
<td>
<asp:UpdatePanel runat="server" UpdateMode="Conditional" ID="updatePanel2">
<ContentTemplate>
<asp:TextBox ID="etlBox" runat="server" Enabled="false"/>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="useEtl" EventName="SelectedIndexChanged" />
</Triggers>
</asp:UpdatePanel>
</td>

using multiple update progress for one update panel

I have multiple update progress in my page in different places but they all have the id of one update Panel because i'm only using one update Panel my question is how can i let one update progress to display it's content when an update is done.
here is a sample of my code :
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<ContentTemplate>
<asp:Label ID="platformLabel" runat="server"
Text=" <%$Resources:Resource,SelectPlatform %>">
</asp:Label>
<asp:LinkButton ID="platformHyperLink" runat="server"
CssClass="platformElementHL"
CommandArgument='<%# Eval("PLATFORM_ID")%>'
OnClick="platformHyperLink_Click"
OnClientClick="ShowSearchButton();" />
<asp:Label ID="PlatformNameLabel" runat="server"
Text='<%# Eval("PLATFORM_NAME")%>' >
</asp:Label>
<telerik:RadButton ID="findDevice" runat="server"
Text="<%$Resources:Resource,Search %>"
OnClientClicked="HideTootltip"
OnClick="findDevice_Click"
style="display:none">
</telerik:RadButton>
<asp:UpdateProgress ID="updProgress1"
AssociatedUpdatePanelID="UpdatePanel" runat="server">
<ProgressTemplate>
<img src="App_Themes/WebPortalTheme/images/HomePage/icon-loading-
animated.gif" width="20" height="20" alt="Progress" />
</ProgressTemplate>
</asp:UpdateProgress>
<asp:UpdateProgress ID="updProgress2"
AssociatedUpdatePanelID="UpdatePanel" runat="server">
<ProgressTemplate>
<img src="App_Themes/WebPortalTheme/images/HomePage/icon-loading-
animated.gif" width="20" height="20" alt="Progress" />
</ProgressTemplate>
</asp:UpdateProgress>
</ContentTemplate>
</asp:UpdatePanel>
When i click on the link button the updateProgress1 should be displayed and when i click on the radButton the updateprogress2 should be displayed any ideas ?

You have to use two updatepanels (one for the linkbutton and another for the radiobutton) and associate each updateprogress with the corresponding. If you need to update the entire page use one global updatepanel , by setting the childastrigger option as appropriate.
<asp:UpdatePanel ID="UpdtGlobal" runat="server" ChildrenAsTriggers="true">
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text=" <%$Resources:Resource,SelectPlatform %>" />
<asp:UpdatePanel ID="UpdtLinkButton" runat="server" ChildrenAsTriggers="true">
<ContentTemplate>
<asp:LinkButton ID="LinkButton1" runat="server" CssClass="platformElementHL" CommandArgument='<%# Eval("PLATFORM_ID")%>'
OnClick="platformHyperLink_Click" OnClientClick="ShowSearchButton();" />
</ContentTemplate>
</asp:UpdatePanel>
<asp:Label ID="Label2" runat="server" Text='<%# Eval("PLATFORM_NAME")%>' />
<asp:UpdatePanel ID="UpdtRadButton" runat="server" ChildrenAsTriggers="true">
<ContentTemplate>
<telerik:radbutton id="findDevice" runat="server" text="<%$Resources:Resource,Search %>"
onclientclicked="HideTootltip" onclick="findDevice_Click" style="display: none" />
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" AssociatedUpdatePanelID="UpdtLinkButton"
runat="server">
<ProgressTemplate>
<img src="App_Themes/WebPortalTheme/images/HomePage/icon-loading-animated.gif" width="20"
height="20" alt="Progress" />
</ProgressTemplate>
</asp:UpdateProgress>
<asp:UpdateProgress ID="UpdateProgress2" AssociatedUpdatePanelID="UpdtRadButton"
runat="server">
<ProgressTemplate>
<img src="App_Themes/WebPortalTheme/images/HomePage/icon-loading-animated.gif" width="20"
height="20" alt="Progress" />
</ProgressTemplate>
</asp:UpdateProgress>
</ContentTemplate>
</asp:UpdatePanel>

Categories

Resources