/// <summary>
/// 是否存在该记录
/// </summary>
public bool Exists(int id)
{
StringBuilder strSql = new StringBuilder();
strSql.Append("select count(1) from " + PubConstant.date_prefix + "Role");
strSql.Append(" where id=@id ");
SqlParameter[] parameters =
{
new SqlParameter("@id", SqlDbType.Int, 4)
};
parameters[0].Value = id;
return(DbHelpers.Exists(strSql.ToString(), parameters));
}