ImageButton does'nt fire OnItemCommand in repeater control - asp.net

Question

everyone!
I'm writing repeater control on my web-page. After I added data paging for repeater I have got problem:
ImageButton does'nt fire any more OnItemCommand event of repeater. Why?
Here, is part of markup code:
<asp:Repeater ID="PartsRepeater" runat="server"
OnItemCommand="partsRepeater_ItemCommand"
OnItemDataBound="partsRepeaterItem_Bound">
<HeaderTemplate>
<table rules="all" cellspacing="0" style="border-color: rgb(31, 77, 48);
border-style: solid; width: 100%; border-collapse: collapse;">
<tr >
<td style="width: 92%;">
<table cellspacing="0" border="0" style="border-color: rgb(31, 77, 48); border-style: solid;
width: 100%; border-collapse: collapse;">
<tr style="background-color: #1f4d30; color: white;">
<td style="width: 10%;">
<asp:Label runat="server" Text="Name" ID="lblName">
</asp:Label>
</td>
<td style="width: 10%;">
<asp:Label runat="server" Text="Number" ID="Label64">
</asp:Label>
</td>
<td style="width: 10%;">
<asp:Label runat="server" Text="Category" ID="Label65">
</asp:Label>
</td>
<td style="width: 20%;">
<asp:Label runat="server" Text="Description" ID="Label66">
</asp:Label>
</td>
<td style="width: 20%;">
<asp:Label runat="server" Text="Models" ID="Label67">
</asp:Label>
</td>
<td style="width: 5%;">
<asp:Label runat="server" Text="Price" ID="Label68">
</asp:Label>
</td>
<td style="width: 5%;">
<asp:Label runat="server" Text="A Qty" ID="Label69">
</asp:Label>
</td>
<td style="width: 5%;">
<asp:Label runat="server" Text="B Qty" ID="Label70">
</asp:Label>
</td>
<td style="width: 5%;">
<asp:Label runat="server" Text="Actual Qty" ID="Label71">
</asp:Label>
</td>
<td style="width: 5%;">
<asp:Label runat="server" Text="Total Qty" ID="Label72">
</asp:Label>
</td>
<td style="width: 5%;" >
</td>
</tr>
</table>
</td>
<td style="width: 8%;" >
</td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr style="border-color: #1f4d30;"
>
<td style="width: 92%;">
<table border="0" cellspacing="0" class="PartsRepeater_InnerTable">
<tr class="PartsRepeater_InnerTable">
<td style="cursor: pointer; width: 10%;" class="PartsRepeater_InnerTable">
<asp:HiddenField runat="server" ID="PartID" Value='<%# Bind("PartID") %>' Visible="false" />
<asp:LinkButton runat="server" ID="Label52" Text='<%#Eval("Name").ToString()%>' CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 10%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="Label45" runat="server" Text='<%#Eval("Number").ToString().ToUpper()%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 20%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="Label46" runat="server" Text='<%#Eval("Category").ToString()%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 20%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="Label47" runat="server" Text='<%# GetPartDescr((String)Eval("Description"))%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 5%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="Label48" runat="server" Text=' <%# GetPartDescr((String)Eval("ModelName")) %>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 4%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="Label49" runat="server" Text='<%# GetPrice(Eval("Price").ToString(), Eval("sPrice").ToString(), Eval("Price3").ToString())%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 4%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="lblAQTY" runat="server" Text=' <%#Eval("AGradeQty").ToString()%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 4%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="lblBQty" runat="server" Text=' <%# int.Parse(Eval("QtyInStock").ToString()) - int.Parse(Eval("AGradeQty").ToString())%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 4%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="lblActualQTY" runat="server" Text=' <%#Eval("ActualQty").ToString()%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 4%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="Label60" runat="server" Text='<%#Eval("QtyInStock").ToString()%>'
CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
</tr>
<tr >
<td colspan="15" style="cursor: pointer; width: 5%;">
<asp:LinkButton ID="Label63" runat="server" Text='<%#Eval("priceModificationDate").ToString()%>'
Font-Size="Smaller" CommandArgument='<%# Eval("PartID") %>'>
</asp:LinkButton>
</td>
</tr>
</table>
</td>
<td style="width: 8%">
<table>
<tr>
<td style="cursor: pointer; width: 50%;" class="PartsRepeater_InnerTable">
<asp:ImageButton ID="btnEdit" runat="server" ImageUrl="~/Images/edit.png" CausesValidation="False"
CommandName="editRow" CommandArgument='<%# Eval("PartID") %>' OnClientClick='SaveScrollPositions'>
</asp:ImageButton>
</td>
<td style="cursor: pointer; width: 50%;">
<asp:ImageButton ID="btnDelete" runat="server" OnClientClick='<%# GetConfirmMessage(Eval("Name"))%>'
ImageUrl="~/Images/delete.png" CausesValidation="False" CommandName="Delete"
CommandArgument='<%# Eval("PartID") %>'></asp:ImageButton>
</td>
</tr>
</table>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>

Answer 1

I've tried nany ways to solve this problem and solved it so:
I just replace ImageButton with linkButton with image:
Part og code:
<td style="cursor: pointer; width: 50%;" class="PartsRepeater_InnerTable">
<asp:LinkButton ID="btnEdit" runat="server" CausesValidation="false" CommandName="editRow"
CommandArgument='<%# Eval("PartID") %>' OnClientClick='SaveScrollPositions'>
<asp:Image ID="Image1" runat="server" ImageUrl="~/Images/edit.png" />
</asp:LinkButton>
</td>
<td style="cursor: pointer; width: 50%;">
<asp:LinkButton ID="btnDelete" runat="server" CausesValidation="false" CommandName="Delete"
CommandArgument='<%# Eval("PartID") %>' OnClientClick='<%# GetConfirmMessage(Eval("Name"))%>'>
<asp:Image ID="Image2" runat="server" ImageUrl="~/Images/delete.png" />
</asp:LinkButton>
</td>
For more see: http://weblogs.asp.net/justinsaraceno/archive/2008/11/05/linkbutton-with-image-and-text.aspx

Answer 2

Sorry I don't have a more specific answer, but it has something to do with ViewState on the repeater and rebinding the repeater on Postback.
Apparently, when the postback occurs and you rebind the repeater, it loses some event binding and instead of running the OnCommand, it treats it as if it's a first page load for ImageButton. AFAIK it only happens on ImageButton and not LinkButton or Button.

Answer 3

Put this in code behind it will surely work
if (!Page.IsPostBack)
{
REPEATERDATABIND(); // Bind method
}