ASP.NET - Adding an UpdatePanel trigger to a LinkButton inside a gridview - asp.net

Question

I was trying to update the content of a modal dialog, and this code works for me:
<asp:LinkButton ID="updateSomething" runat="server" Text="Update" CausesValidation="false" OnClientClick="openDialog();" onclick="UpdateButton_Click" />
<asp:UpdatePanel ID="upNewUpdatePanel" runat="server">
<ContentTemplate>
<asp:Label ID="updateLabel" runat="server"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="updateSomething" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
However, when I try to place the LinkButton inside a gridview, like so:
<asp:GridView ID="grdListUsers" runat="server" AutoGenerateColumns="false" AllowPaging="false" OnRowDataBound="grdRowDefListUsers" CssClass="mGrid" EmptyDataText="No users.">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Nome" HeaderStyle-Width="300" />
<asp:BoundField DataField="Login" HeaderText="Login" HeaderStyle-Width="300" />
<asp:TemplateField HeaderText="Options" HeaderStyle-Width="75" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle">
<ItemTemplate>
<asp:LinkButton ID="updateSomething" runat="server" Text="Update" CausesValidation="false" OnClientClick="openDialog();" onclick="UpdateButton_Click" />
</asp:TemplateField>
</Columns>
</asp:GridView>
This does not work, I get an error saying: A control with ID 'updateSomething' could not be found for the trigger in UpdatePanel 'upNewUpdatePanel'.
How can I use the ImageButton inside the gridview?

Answer 1

Try and add the asp:AsyncPostBackTrigger to the asp:GridView's OnRowCommand event and handle the link button click in that event
<asp:GridView ID="grdListUsers" runat="server" onRowCommand="grdListUsers_RowCommand">
<asp:TemplateField>
<asp:LinkButton ID="updateSomething" CommandName="update-something" CommandArgument='<%# DataBinder.Eval(Container, "RowIndex") %>'/>
</asp:TemplateField>
</asp:GridView>
and in the cs create the event like this
protected void grdListUsers_RowCommand(object sender, GridViewCommandEventArgs e)
{
if (e.CommandName == "update-something")
{
grdListUsers.SelectedIndex = Convert.ToInt32(e.CommandArgument);
}
}

Answer 2

You could add a trigger of the gridview
<Triggers>
<asp:PostBackTrigger ControlID="gridview1" />
</Triggers>

Answer 3

Add another Update Panel surrounding your link button just like below.
<asp:GridView ID="grdListUsers" runat="server" AutoGenerateColumns="false" AllowPaging="false" OnRowDataBound="grdRowDefListUsers" CssClass="mGrid" EmptyDataText="No users.">
<Columns>
<asp:BoundField DataField="Name" HeaderText="Nome" HeaderStyle-Width="300" />
<asp:BoundField DataField="Login" HeaderText="Login" HeaderStyle-Width="300" />
<asp:TemplateField HeaderText="Options" HeaderStyle-Width="75" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle">
<ItemTemplate>
<asp:UpdatePanel ID="aa" runat="server">
<ContentTemplate>
<asp:LinkButton ID="updateSomething" runat="server" Text="Update" CausesValidation="false" OnClientClick="openDialog();" onclick="UpdateButton_Click" />
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="updateSomething"/>
</Triggers>
</asp:UpdatePanel>
</asp:TemplateField>
</Columns>
</asp:GridView>

Answer 4

You could set the UpdatePanel's UpdateMode to Conditional and update it manually from the UpdateButton_Click-Handler:
<asp:UpdatePanel ID="UdpFormPanel" runat="server" UpdateMode="conditional" ChildrenAsTriggers="false" >
LinkButton's Click-Event handler:
Protected Sub UpdateButton_Click(ByVal sender As Object, ByVal e As EventArgs)
'blah....
upNewUpdatePanel.Update()
End Sub