Data Controls :: Unable To Find CheckBox In DataList On Button Click Event

Dec 5, 2012

i have datalist and on button click event i check the checkbox is checked or notfor this my code is

<asp:DataList runat="server" ID="dlstproductsize">
<ItemTemplate>
<input type="checkbox" value="<%#eval("size_id")%>" id="chksize" runat="server" />    <%#Eval("name")%>
</ItemTemplate>
</asp:DataList>
If chkallowsize.Checked = True Then
For Each item In dlstproductsize.Items
If (CType(item.FindControl("chksize"), HtmlInputCheckBox)).Checked = True Then
ocommon.ProductMapingInsert(uniq_id.Text, CType(item.FindControl("chksize"), HtmlInputCheckBox).Value)
End If
Next
End If

i get the error like object reference not set to the object

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