Update embebido

[Nombela]

El delete me lo hace bien pero el insert solo me pone uno aunke kiera insertar varios.

i=0;
while (i< arr.Length)
{
if (Convert.ToString(ViewState["identificadores"]).IndexOf(arr[Convert.ToInt16(i)])!=-1)
{
//Response.Write("HOLA");
}
else
{
myCommand.CommandText = " Insert into UsuariosServicios (UsServIdServ,UsServIdUs) values (" + arr[i] +"," + ComboLogin.SelectedItem.Value +")";
}
i+=1;
}
myCommand.Connection.Open();
Response.Write(myCommand.CommandText);
myCommand.Connection.Close();