ASP.NET

<asp:TemplateField HeaderText="Alineable">
     <ItemTemplate>
        <asp:CheckBox ID="chkEstatus" Checked=' <%# ((string)Eval("Estatus"))=="Alineable"?true:false%>'
                                        runat="server" AutoPostBack="True" OnCheckedChanged="chkEstatus_CheckedChanged" />
      </ItemTemplate>
                               
</asp:TemplateField>

protected override void OnLoad(EventArgs e)
{
    if (Utileria.ValidarSesion(Session["Usuario"], 0))
    {
        if (!Page.IsPostBack)
            ObtenerEquipos();
        usuario = (Usuario)Session["Usuario"];
        Filtrar();//Fill the gridview
    }
}

protected void chkEstatus_CheckedChanged(object sender, EventArgs e)

  {//this event fire when the user check or unchek the chechbox.
   //After user check or uncheck and the user change the filter this
   //automatically fire(i don't know why)

      int jugadorId;

      try

      {

          CheckBox chkAlineable = (CheckBox)sender;

          int rowIndex = ((GridViewRow)chkAlineable.Parent.Parent).RowIndex;

          jugadorId = (int)gvJugadores.DataKeys[rowIndex].Value;

          Roster roster = new Roster();

          roster.EquipoId = int.Parse(ddlEquipos.SelectedValue);

          roster.JugadorId = jugadorId;

          roster.Estatus = chkAlineable.Checked ? "Alineable" : "Inalineable";

          roster.ActualizarEstatus(null);

          Filtrar();

          upJugadores.Update();

      }

      catch { throw; }

  }

private void Filtrar()//get the data from de data source an fill gridview

{

    gvJugadores.DataSource = JugadoresColeccion.FiltrarRoster(ddlOpcionesBusqueda.SelectedValue, txtBusqueda.Text, int.Parse(ddlEquipos.SelectedValue));

    gvJugadores.DataBind();

}

<asp:UpdatePanel ID="UpdatePanel1" UpdateMode="Conditional" runat="server">
        <ContentTemplate>
            <div>
                <asp:Repeater ID="RepeaterSkillGroup" runat="Server">
                    <ItemTemplate>
                        <div class="Box">
                            <div >
                                <MuM:SkillGroupControl ID="SkillGroup" runat="Server">
                                </MuM:SkillGroupControl>
                            </div>
                        </div>
                    </ItemTemplate>
                </asp:Repeater>
                <asp:HiddenField ID="HiddenField1" runat="Server" />
            </div>
        </ContentTemplate>
    </asp:UpdatePanel>

<tr>
                            <td align="right">
                                <asp:Label ID="CompanyIdLabel" runat="server" AssociatedControlID="CompanyId">Company Id:</asp:Label>
                            </td>
                            <td>
                                <asp:TextBox ID="CompanyId" runat="server"></asp:TextBox>
                                <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" 
                                    ControlToValidate="CompanyId" ErrorMessage="CompanyId is required." 
                                    ToolTip="CompanyId is required." ValidationGroup="CreateUserWizard1">*</asp:RequiredFieldValidator>
                            </td>
                        </tr>