asp:UpdateProgress in gridview give error A control with ID 'cmbCoverType' could not be found for the trigger in UpdatePanel 'UpdatePanel2'"

Question

1.00/5 (1 vote)

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XML

<asp:UpdateProgress AssociatedUpdatePanelID="UpdatePanel2" runat="server" ID="UpdateProgress1">
                    <ProgressTemplate>
                        <div class="blockUI">
                            <div style="margin-left: auto; margin-right: auto; width: 200px;">
                                <img src="Images/loading.gif" alt="loading..." />
                            </div>
                        </div>
                    </ProgressTemplate>
                    </asp:UpdateProgress>

   <asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
   <Triggers>
    <asp:AsyncPostBackTrigger ControlID="cmbCoverType" EventName="SelectedIndexChanged" />
   </Triggers>
                <ContentTemplate>
                <asp:Panel ID="pnlGridPrposalDetails" runat="server" ScrollBars="Auto">

        <asp:GridView id="gridProposalDetails" runat="server" CellPadding="4" AutoGenerateColumns="false" ShowFooter="true" Width="900px" >

            <Columns>
..
</Columns>
        </asp:GridView>
</asp:Panel>
           </ContentTemplate>
       </asp:UpdatePanel>

Posted 29-Oct-13 21:31pm

sayed farhan

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VICK 30-Oct-13 4:22am

to which control this belongs to ??

ControlID="cmbCoverType"

sayed farhan 30-Oct-13 4:32am

this is a dropdown control which is inside of gridview

<asp:DropDownList ID="cmbCoverType" runat="server" CssClass="cmbClass" AutoPostBack ="true" OnSelectedIndexChanged="cmbCoverType_SelectedIndexChanged"><br />

VICK 30-Oct-13 5:37am

So your dropdown is in TemplateField of Gridview.?

1 solution

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**VICK** · Accepted Answer · 2013-10-29T22:38:00

Solution 1

Have a look at the following link.

Update Panel triggered by DDL

New Link

the following link is having what OP found to sort out the same type of problem.
So Kindly have a look at the end of it.

Same Scenario Solution

Hope it will hlep. :)

Posted 29-Oct-13 22:38pm

VICK

Updated 29-Oct-13 23:46pm

v3

Comments

sayed farhan 30-Oct-13 4:46am

Thanxs for reply.
but my dropdown is inside gridview so when i use your given approach its give me error
A control with ID 'cmbCoverType' could not be found for the trigger in UpdatePanel 'UpdatePanel2'.

VICK 30-Oct-13 4:51am

answer updated with new link.

sayed farhan 30-Oct-13 4:53am

means?

VICK 30-Oct-13 4:56am

Mean another new link has been added. Kindly check that "New Link".

sayed farhan 30-Oct-13 4:56am

here my problem is.
i have a two dropdown control in a gridview. on select indexchanged of first dropdown second dropdown is filled which take a time so i want to use asp:update progress but its give a error.

VICK 30-Oct-13 5:42am

Remove UpdateMode="Conditional". and hope so it gona work.

VICK 30-Oct-13 5:47am

I have added one more link. Kindly have a look at following answer found at that link.

"I just fixed this bug after searching everywhere and tried the last solution here with no success. So I first created an OnClick event in the CheckBox. In the Onclick function in the .cs file, make a call to the SelectedIndexChanged(new object(), new EventArgs()); method with arguments as given then just after call the Update method to your UpdatePanel."

sayed farhan 1-Nov-13 2:38am

Thanx VICK i got the solution

VICK 1-Nov-13 3:28am

You are welcome. Kindly share your solution so that it could be helpful for others. and if my solution has helped you properly, than do upvote it as well. :)

sayed farhan 2-Nov-13 4:09am

asp:UpdateProgress was not working properly so i have changed a logic
in dropdown on onchange event i have called a JavaScript in which iam showing a div which contain a progress bar image and in code behind after loading the dropdown i am hinding that div
.aspx page
JavaScript Method
function ShowDiv() {
document.getElementById('<%=divBlock.ClientID%>').style.display = "block";
}

Dropdown which is inside of gridview control

<asp:DropDownList ID="cmbClassType" runat="server" CssClass="cmbClass" AutoPostBack ="true" OnSelectedIndexChanged="cmbClassType_SelectedIndexChanged" onchange="ShowDiv();" >

<div class="blockUI" id="divBlock" runat="server" style="display: none;">
<div class="processMessage">
<img src="Images/processing.gif" alt="loading..." />
</div>
</div>

.cs page

divBlock.Style.Add("display", "none")

.css
.blockUI
{

position: fixed;
top: 0px;
bottom: 0px;
left: 0px;
right: 0px;
overflow: hidden;
padding: 0;
margin: 0;
background-color: #000;
filter: alpha(opacity=50);
opacity: 0.5;
z-index: 1000;

}
.processMessage
{
position: fixed;
top: 45%;
left: 45%;
padding: 10px;
width: 14%;
z-index: 1001;
background-color: Black;
border: solid 1px #000;
}

VICK 3-Nov-13 23:39pm

Gud..