Confirmation while deleting record from gridview in asp.net

Here i used LinkButton to show Delete link on gridview

<asp:GridView ID="GridView1" Runat="server" 
    DataSourceID="employeeDataSource" AutoGenerateColumns="False" DataKeyName="empid" >
   
    <Columns>

        <asp:BoundField HeaderText="Last" DataField="LastName" 
           SortExpression="LastName"></asp:BoundField>

        <asp:BoundField HeaderText="First" DataField="FirstName" 
           SortExpression="FirstName"></asp:BoundField>

        <asp:BoundField HeaderText="Hire Date" DataField="HireDate" 
           SortExpression="HireDate"
            DataFormatString="{0:d}">

        </asp:BoundField>

        <asp:TemplateField HeaderText="Seniority">
            <ItemTemplate>
               <asp:LinkButton id="Linkbutton1" runat="server" onClientClick="return confirm('Do you want to delete')" onCommand="Delete">Delete</LinkButton>
            </ItemTemplate>
        </asp:TemplateField>

    </Columns>

    <SelectedRowStyle ForeColor="White" Font-Bold="True" 
         BackColor="#CE5D5A"></SelectedRowStyle>
    <RowStyle BackColor="#F7F7DE"></RowStyle>
</asp:GridView>

<asp:SqlDataSource id="employeeDataSource" runat="server" SelectCommand="select LastName,FirstName,HireDate from employee" DeleteCommand="Delete from employee where empid=@empid">

while deleting any particular record, it will ask for confirmation.

Here i used "onClienClick" property in linkbutton,it will run before getting postback and ask user for confirmation if user click ok "onCommand" get fire by calling DeleteCommand and record get deleted.