asp:CheckBoxField in GridView - VS 2008

<Columns>
         <asp:CheckBoxField DataField="Locked" Visible="true" AccessibleHeaderText="On Hold" ReadOnly="false"/>
 </Columns>

protected void grdSomething_RowDataBound ( Object sender, GridViewRowEventArgs e )
{
    if ( e.Row.RowType == DataControlRowType.DataRow )
    {
        BusinessObject data = ( BusinessObject ) e.Row.DataItem;
        CheckBox chkLocked = ( CheckBox ) e.Row.FindControl( "chkLocked" );
        chkLocked.Checked = data.Locked;
    }
}

[WebMethod]
public static void ToggleLockedStatus ( string key )
{
    if ( BusinessObjectDictionary.ContainsKey( key ) )
    {
        BusinessObjectDictionary[ key ].Locked = !BusinessObjectDictionary[ key ].Locked;
    }
    else
    {
        throw new Exception( "The business object specified was not found." );
    }
}

using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;
using System.Data.Linq;
using System.Data.Linq.Mapping;
using System.Web;
using System.Web.UI.WebControls;


namespace Web.Library.Controls.Commands
{
    public class CommandCheckBox : System.Web.UI.WebControls.CheckBox
    {
        private static readonly object EventCommand = new object();

        public event CommandEventHandler Command
        {
            add
            {
                Events.AddHandler(EventCommand, value);
            }
            remove
            {
                Events.RemoveHandler(EventCommand, value);
            }
        }

        public string CommandName
        {
            get
            {
                if (this.ViewState["CommandName"] == null)
                    return string.Empty;

                return (string)this.ViewState["CommandName"];
            }
            set { this.ViewState["CommandName"] = value; }
        }

        public string CommandArgument
        {
            get
            {
                if (this.ViewState["CommandArgument"] == null)
                    return string.Empty;

                return (string)this.ViewState["CommandArgument"];
            }
            set { this.ViewState["CommandArgument"] = value; }
        }

        protected virtual void OnCommand(CommandEventArgs args)
        {
            CommandEventHandler commandEventHand = Events[EventCommand] as CommandEventHandler;

            if (commandEventHand != null)
            {
                commandEventHand(this, args);
            }

            base.RaiseBubbleEvent(this, args);
        }

        protected override void OnCheckedChanged(EventArgs e)
        {
            base.OnCheckedChanged(e);

            CommandEventArgs args = new CommandEventArgs(this.CommandName, this.CommandArgument);

            this.OnCommand(args);
        }


        public CommandCheckBox()
        {
        }

    }
}

<asp:CheckBox ID="MyCheckBox" runat="server" Checked='<%#Eval("Locked")' ... />