how to assign control id which is in repeater for updatepanel triggers

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Hi guys,

i have a dropdownlist inside the repeater.
and i have update panel for it,
i want to assign ddl id to the update panel triggers.

But i'm getting control id not found error.

Can any one plz help me, how can i assign this control id to the update panel triggers.

i have this code, but i'm sure where i have to call this.
CODE

//Creates a new async trigger
    AsyncPostBackTrigger trigger = new AsyncPostBackTrigger();

    //Sets the control that will trigger a post-back on the UpdatePanel
    trigger.ControlID = "lnkbtncommit";

    //Sets the event name of the control
    trigger.EventName = "Click";

    //Adds the trigger to the UpdatePanels' triggers collection
    pnlUpdate.Triggers.Add(trigger);

plz help me.

Thanks

Posted 12-Oct-14 22:03pm

abdul subhan mohammed

Updated 13-Oct-14 6:55am

v3

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Dilan Shaminda · Answer 1 · 2014-10-13T07:18:00

Solution 1

It might because of your trigger ControlID is out of scope to Trigger collection.Also
You have set lnkbtncommit as the control ID for the update panel. Try setting it like this,

C#

trigger.ControlID = "DropDownList1";
trigger.EventName = "SelectedIndexChanged";

Also you can set your dropdownlist ID for the update panel trigger like below in aspx

C#

<asp:updatepanel id="UpdatePanel1" runat="server">
<triggers>
<asp:asyncpostbacktrigger controlid="DropDownList1" eventname="SelectedIndexChanged" />
</triggers>
<contenttemplate>
.....</contenttemplate></asp:updatepanel>

Posted 13-Oct-14 7:18am

Dilan Shaminda

Updated 13-Oct-14 7:22am

v3

Comments

abdul subhan mohammed 14-Oct-14 1:41am

Can u plz explain me, about lnkbtncommit, how to set it n where to set.

Dilan Shaminda 14-Oct-14 7:58am

see this example for a datalist:

<div class="singleItem">
<label>
<asp:Button ID="btnQuickSearch" runat="server" CssClass="SubmitButtonStyle" Text="Search" OnClick="btnQuickSearch_Click" />
</label>
</div>

<asp:UpdatePanel ID="updtpnlProducts" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnQuickSearch" EventName="Click" />
</Triggers>
<contenttemplate>
<asp:DataList ID="dlstVehicles" runat="server" RepeatColumns="3" CellSpacing="5"
RepeatDirection="Horizontal" RepeatLayout="Table" OnItemCommand="dlstVehicles_ItemCommand">
<itemtemplate>
.
.
.

abdul subhan mohammed 15-Oct-14 2:01am

Dude, i have placed controls in the repeater, like dropdownlist and it has its OnSelectedIndexChanged event, i want to trigger this, of the updatepanel.

Dilan Shaminda 15-Oct-14 2:37am

inside OnSelectedIndexChanged bind data to repeater based on the dropdown selection value.It will bind data to repeater without refreshing the page