I think it's a common problem, saw so many post on it, most of them said check for IsPostback condition in Page_Load and some said to replace image button with link button, I have tried everything but i still cannot get the link button to fire on GirdView Row Command.

I load the gridview in page load with !IsPostback condition

My Grid View

<asp:Panel ID="Panel1" runat="server">
    <!-- Grid View 1 -->
    <br />
    <div id = "dvGrid1" style ="padding:10px;">
    <b><asp:Label ID="lblGridView1Heading" runat="server" Text="Centre Details" Visible="False"></asp:Label></b>
    <br />
    

        <asp:UpdatePanel ID="UpdatePanel2" runat="server">
        <ContentTemplate>
        
        <asp:GridView ID="GridView1" runat="server"  Width = "100%"
        AutoGenerateColumns = "false" CellPadding="4" AlternatingRowStyle-BackColor = "#EFF3FB"
        HeaderStyle-BackColor = "#507CD1" AllowPaging ="true"
        OnPageIndexChanging = "OnPaging" DataKeyNames = "ID"
        PageSize = "10" OnRowCommand="GridView1_RowCommand" OnRowDataBound="GridView1_RowDataBound" >
       <Columns>
         <asp:TemplateField   HeaderText = "ID" SortExpression="ID">
        <HeaderTemplate>
           <asp:LinkButton ID="lnkbtnID" runat="server" CausesValidation="false" CommandArgument="ID" CommandName="Sort" ForeColor="#FFFFFF" Font-Underline="false">ID</asp:LinkButton>
           <asp:PlaceHolder ID="placeholderID" runat="server"></asp:PlaceHolder>
        </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblID" runat="server" Text='<%# Eval("ID")%>'></asp:Label>
            </ItemTemplate>
            
            <ItemStyle  Height="100px" CssClass="AlignCenter" />
            
        </asp:TemplateField>
    <asp:TemplateField   HeaderText = "CentreName" SortExpression="CentreName">
        <HeaderTemplate>
           <asp:LinkButton ID="lnkbtnCentreName" runat="server" CausesValidation="false" CommandArgument="CentreName" CommandName="Sort" ForeColor="#FFFFFF" Font-Underline="false">Centre Name</asp:LinkButton>
           <asp:PlaceHolder ID="placeholderCentreName" runat="server"></asp:PlaceHolder>
        </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblCentreName" runat="server" Text='<%# Eval("CentreName")%>'></asp:Label>
            </ItemTemplate>
            
            <ItemStyle  Height="100px" CssClass="AlignCenter" />
            
        </asp:TemplateField>
               
        <asp:TemplateField   HeaderText="CampaignName" SortExpression="CampaignName">
        <HeaderTemplate>
           <asp:LinkButton ID="lnkbtnCampaignName" runat="server" CausesValidation="false" CommandArgument="CampaignName" CommandName="Sort" ForeColor="#FFFFFF" Font-Underline="false">Campaign Name</asp:LinkButton>
           <asp:PlaceHolder ID="placeholderCampaignName" runat="server"></asp:PlaceHolder>
        </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblCampaignName" runat="server" Text='<%# Eval("CampaignName")%>'></asp:Label>
                
               
            </ItemTemplate>
           
            <ItemStyle Width="150px" Height="30px" CssClass="AlignCenter" />
              
            
        </asp:TemplateField>

         <asp:TemplateField   HeaderText = "UserName" SortExpression="UserName">
        <HeaderTemplate>
           <asp:LinkButton ID="lnkbtnUserName" runat="server" CausesValidation="false" CommandArgument="UserName" CommandName="Sort" ForeColor="#FFFFFF" Font-Underline="false">UserName</asp:LinkButton>
           <asp:PlaceHolder ID="placeholderUserName" runat="server"></asp:PlaceHolder>
        </HeaderTemplate>
            <ItemTemplate>
                <asp:Label ID="lblUserName" runat="server" Text='<%# Eval("UserName")%>'></asp:Label>
                
            </ItemTemplate>
             
            <ItemStyle Width="150px" Height="30px" CssClass="AlignCenter" />
           
        </asp:TemplateField>
        
       
  
      

                                  

                                 
                                     <asp:TemplateField>
                                    <HeaderTemplate>
                                       <font color="#FFFFFF"> Delete</font>
                                    </HeaderTemplate>
                                    <ItemTemplate>
                                    
                                   <asp:LinkButton ID="Linkbutton2" runat="server"  CommandArgument='<%# DataBinder.Eval(Container.DataItem, "ID")%>'
                                                                CommandName="CamDelete" Height="16" Text="<img border = 0 alt='Delete this Contact' src='../images/Icon_Delete.png'>"
                                                                Width="16">
                                    </asp:LinkButton>
                                    
                 <br /><br />
                                    </ItemTemplate>
                                    <ItemStyle  Height="30px" CssClass="AlignCenter" />
                                    </asp:TemplateField>
        
        
                                    
       </Columns>
       <AlternatingRowStyle BackColor="#EFF3FB"  />
    </asp:GridView><br /><br />
            <asp:Label ID="lblHeadingRecords1" runat="server" Text="No of Records:" Font-Bold="True" Visible="False"></asp:Label>
            <asp:Label ID="lblRecords1" runat="server" Visible="False" ></asp:Label>&nbsp;&nbsp;
            <asp:Label ID="lblHeadingJumpTO1" runat="server" Text="Jump To Page:" Font-Bold="True" Visible="False"></asp:Label>

<asp:DropDownList ID="ddlJumpTo1" runat="server"  OnSelectedIndexChanged = "PageNumberChanged1" AutoPostBack = "true" Visible="False">

</asp:DropDownList>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID = "GridView1" />
    </Triggers>
    </asp:UpdatePanel>
    </div>
    </asp:Panel>

   </div>

Code Behind

 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
           
            string cmdid = (string)e.CommandArgument;
            switch (e.CommandName.ToLower())
            {
                case "camdelete":
                    //db.close();
                    DeleteUserAssociation(cmdid);
                    break;

            }

        }

Page Load

 protected void Page_Load(object sender, EventArgs e)
        {
            

            if (!Page.IsPostBack)
            {
                

                int TotalRows = this.BindGrid(1);
                this.FillJumpToList(TotalRows);

               
            }
        }

It's not working.

I have this similar kind GridView on another page and it works but doesn't work on another, Can't figure out why. though on the other page where it works, i load the GridView not in page load but on click of button.

Also came across this article, didn't help though

http://netpl.blogspot.com/2008/01/imagebutton-in-templatefield-does-not.html

Screenshot of Java script from status bar of page where command fires and from page where command doesn't fire