or

<telerik:GridTemplateColumn DataField="quantity" FilterControlAltText="Filter TemplateColumn column" UniqueName="quantity" HeaderText="Quantity" SortExpression="quantity"> <ItemTemplate> <telerik:RadNumericTextBox ID="quantityTextBox" runat="server" ShowSpinButtons="True" width="50px" DbValue='<%# Convert.ToDouble(Eval("quantity")) %>' DataType="System.Int32" Culture="en-SG" NumberFormat-DecimalDigits="0" MinValue="0" MaxValue="999" ClientEvents-OnValueChanging="editQuantity"> </telerik:RadNumericTextBox> </ItemTemplate> </telerik:GridTemplateColumn>.RadTreeView_tree_2,.RadTreeView_tree_2 a.rtIn,.RadTreeView_tree_2 .rtEdit .rtIn input{ color: #000000; font: 12px/18px "Segoe UI", Arial, sans-serif; /*line-height: inherit;*/}.RadTreeView_tree_2 .rtPlus,.RadTreeView_tree_2 .rtMinus{ background-image: url('TreeView/PlusMinus.png');}.RadTreeView_tree_2 .rtChecked,.RadTreeView_tree_2 .rtUnchecked,.RadTreeView_tree_2 .rtIndeterminate{ background-image: url('TreeView/TriState.png');}.RadTreeView_tree_2 .rtHover .rtIn,.RadTreeView_tree_2 .rtSelected .rtIn{ color: #363636; border: 1px solid #fcd132;}.RadTreeView_tree_2 .rtHover .rtIn{ background-color: #fcf9de; background-image: url('TreeView/ItemHoveredBg.png');}.RadTreeView_tree_2 .rtSelected .rtIn{ background-color: #fcecb1; background-image: url('TreeView/ItemSelectedBg.png');}.RadTreeView_tree_2 .rtSelected .rtLoadingBefore,.RadTreeView_tree_2 .rtSelected .rtLoadingAfter,.RadTreeView_tree_2 .rtSelected .rtLoadingBelow{ color: #333333;}.RadTreeView_tree_2 .rtLI .rtEdit .rtIn{ border-color: #fcd132; background: #ffffff;}.RadTreeView_tree_2_disabled .rtIn,.RadTreeView_tree_2 .rtDisabled .rtIn{ color: #cccccc;}div.RadTreeView_tree_2 .rtIn{ /*font-size: 11px; line-height: normal;*/ font-weight: normal;}div.RadTreeView_tree_2 .rtHover .rtIn{ line-height: normal; font-weight: bold;}div.RadTreeView_tree_2 .rtSelected .rtIn{ font-weight: bold;}div.RadTreeView_tree_2 .rtIn{ /*font-size: 10px; line-height: 12px;*/}div.RadTreeView_tree_2 .rtHover .rtIn{ border-right-color: rgb(252,209,50); /*line-height: 12px; font-size: 10px;*/}div.RadTreeView_tree_2 .rtSelected .rtIn{ /*font-size: 10px;*/ font-weight: bold;}
<Triggers>
<asp:AsyncPostBackTrigger controlid="btnAddrw" eventname="Click" />
</Triggers>
im getting the below error as attached
if i remove the above trigger code row is getting added but page is getting Postback
How to fix this?
thanks, Harin