Perform Edit, delete operation in grid view on drop down select change

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C#

ASP.NET

Hello Sir,
I am working on gridview Edit operation. I am selecting Edit operation from a Drop Down list inside the gird view.

In this dropdown have many option. I want to perform selected option.

<telerik:RadGrid ID="grdBankAccounts" CssClass="table" runat="server"
                        AllowPaging="True" Width="100%"   AutoGenerateColumns="False"
                        BorderStyle="Solid" BorderWidth="2px" AllowSorting="True"
                        GridLines="None"  >

        <PagerStyle Mode="NumericPages" />
        <MasterTableView TableLayout= "Auto">
            <CommandItemSettings ExportToPdfText="Export to Pdf"></CommandItemSettings>
            <Columns>

                <telerik:GridBoundColumn DataField="AccountID" HeaderText="Account ID"
                     HeaderStyle-CssClass="grid_header" ItemStyle-CssClass="grid_item" DataType="System.Int32" Visible="False" >
                    <HeaderStyle CssClass="grid_header"></HeaderStyle>
                    <ItemStyle CssClass="grid_item"></ItemStyle>
                </telerik:GridBoundColumn>

                <telerik:GridBoundColumn DataField=" AccountName" HeaderText="Bank Name"
                     HeaderStyle-CssClass="grid_header" ItemStyle-CssClass="grid_item">
                    <HeaderStyle CssClass="grid_header"></HeaderStyle>
                    <ItemStyle CssClass="grid_item"></ItemStyle>
                </telerik:GridBoundColumn>

<ItemTemplate>
                    <div>

                     <asp:DropDownList ID="cboGridTransaction" Width="100%" runat="server">
                     <asp:ListItem>Show Transactions</asp:ListItem>
                     <asp:ListItem>Depost</asp:ListItem>                                        
                     <asp:ListItem>Edit</asp:ListItem>
                     <asp:ListItem>Delete Account</asp:ListItem>
                     </asp:DropDownList>

                     </div>


                     </ItemTemplate>
</Columns>
        </MasterTableView>
</telerik:RadGrid>