Something

<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" Title="Untitled Page" %>

<%@ Register Assembly="System.Web.Extensions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
    Namespace="System.Web.UI" TagPrefix="asp" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    <asp:ScriptManager runat="server">
    </asp:ScriptManager>

Status:
    <asp:UpdatePanel runat="server">
    
    
    </asp:UpdatePanel>
    <asp:DropDownList ID="DropDownList1" runat="server" AutoPostBack="True">
        <asp:ListItem Value="false">Active Tasks</asp:ListItem>
        <asp:ListItem Value="true">Completed</asp:ListItem>
    </asp:DropDownList>
    
    <div class="todoheader">
    ToDo List Items
    </div>
    <asp:GridView ID="GridView1" runat="server" AllowPaging="True" 
                  AllowSorting="True" AutoGenerateColumns="False" 
                  DataKeyNames="TaskId" DataSourceID="ObjectDataSource1"
                  CssClass="gridview" AlternatingRowStyle-CssClass="even"
                  GridLines="none">
                  
        <Columns>
            <asp:CommandField ShowEditButton="True" />
            <asp:BoundField DataField="TaskId" HeaderText="TaskId" InsertVisible="False" ReadOnly="True"
                SortExpression="TaskId" />
            <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
            <asp:CheckBoxField DataField="Complete" HeaderText="Complete" SortExpression="Complete" />
        </Columns>
    </asp:GridView>
    
    <div class="insertheader">
        Add a NEW Task
        <asp:DetailsView ID="DetailsView1" runat="server"
         AutoGenerateRows="False" 
         DataKeyNames="TaskId"
          DataSourceID="ObjectDataSource1"
           DefaultMode="Insert"
           CssClass="detailsview"
           GridLines="none">
            <Fields>
                <asp:BoundField DataField="TaskId" HeaderText="TaskId" InsertVisible="False" ReadOnly="True"
                    SortExpression="TaskId" />
                <asp:BoundField DataField="Name" HeaderText="Name" SortExpression="Name" />
                <asp:CheckBoxField DataField="Complete" HeaderText="Complete" SortExpression="Complete" />
                <asp:CommandField ShowInsertButton="True" />
            </Fields>
        </asp:DetailsView>
    </div>
    
    <asp:ObjectDataSource ID="ObjectDataSource1" runat="server" DeleteMethod="Delete"
        InsertMethod="Insert" OldValuesParameterFormatString="original_{0}" SelectMethod="GetTasksByStatus"
        TypeName="DataSet1TableAdapters.TasksTableAdapter" UpdateMethod="Update">
        <DeleteParameters>
            <asp:Parameter Name="Original_TaskId" Type="Int32" />
        </DeleteParameters>
        <UpdateParameters>
            <asp:Parameter Name="Name" Type="String" />
            <asp:Parameter Name="Complete" Type="Boolean" />
            <asp:Parameter Name="Original_TaskId" Type="Int32" />
        </UpdateParameters>
        <SelectParameters>
            <asp:ControlParameter ControlID="DropDownList1" Name="isComplete" PropertyName="SelectedValue"
                Type="Boolean" />
        </SelectParameters>
        <InsertParameters>
            <asp:Parameter Name="Name" Type="String" />
            <asp:Parameter Name="Complete" Type="Boolean" />
        </InsertParameters>
    </asp:ObjectDataSource>
    
</asp:Content>