验证：非空、手机号、邮箱

        /// <summary>
        /// 验证 非空
        /// </summary>
        /// <param name="isOK"></param>
        /// <param name="cons"></param>
        private void CheckControls(ref bool isOK,params Control[] cons)
        {
            
            foreach(Control con in cons)
            {
                //非空验证
                if(con is TextBox)
                {
                    if (con.Text.Trim().Length <= 0)
                    {
                        con.BackColor = System.Drawing.Color.Red;
                        isOK = false;
                    }
                    else
                    {
                        con.BackColor = System.Drawing.Color.White;
                    }
                }
            }
        }

        /// <summary>
        /// 保存
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSave_Click(object sender, EventArgs e)
        {
            #region 验证 非空
            //验证 非空
            bool isOk = true;
            CheckControls(ref isOk, txtMobile, txtPwd, txtUserName);
            if (!isOk)
            {
                return;
            } 
            #endregion

            #region 验证 用户名已存在
            //验证 用户名已存在
            string username = txtUserName.Text.Trim();
            UserInfo user1 = userBll.GetUserInfoByUserName(username);
            if (user1 != null)
            {
                lbUserName.Text = "用户名已存在";
                return;
            }
            lbUserName.Text = "";
            #endregion

            #region 验证 密码强度
            //验证 密码强度
            if (txtPwd.Text.Trim().Length < 6)
            {
                lbPwd.Text = "密码至少六位数字或英文字母";
                return;
            }
            lbPwd.Text = "";
            #endregion

            #region 验证 手机号
            //验证 手机号
            //必须是11位，必须是1开始，必须每一位都是数字
            if (txtMobile.Text.Trim().Length != 11)
            {
                lbMobile.Text = "必须是11位";
                return;
            }
            if (txtMobile.Text.Substring(0, 1) != "1")
            {
                lbMobile.Text = "必须以1开始";
                return;
            }
            foreach (char ch in lbMobile.Text.Trim().ToCharArray())
            {
                if (!char.IsDigit(ch))
                {
                    lbMobile.Text = "必须全是数字";
                    return;
                }
            }
            lbMobile.Text = ""; 
            #endregion

            #region 验证 邮箱
            //验证 邮箱
            if(txtEmail.Text.Trim().Length>0)
            {
                //[0-9a-zA-Z_.-]+@[0-9z-zA-Z_.-]+([.][a-zA-Z]){1,2}
                //^[a-z0-9]+([._\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$ 
                string reg = "^[a-z0-9]+([._\-]*[a-z0-9])*@([a-z0-9]+[-a-z0-9]*[a-z0-9]+.){1,63}[a-z0-9]+$";
                if (!Regex.IsMatch(txtEmail.Text.Trim(), reg))
                {
                    lbEmail.Text = "请输入符合邮箱格式的邮箱";
                    return;
                }
            }
            lbEmail.Text = ""; 
            #endregion

            //赋值
            UserInfo user = new UserInfo();
            user.Address = txtAddress.Text;
            user.Email = txtEmail.Text;
            user.Mobile = txtMobile.Text;
            user.Pwd = EncryptPwd.EncryptPassword(txtPwd.Text + EncryptPwd.GetPwdSalt()); //（密码+密码盐）之后再 加密
            user.UserName = txtUserName.Text;
            user.Gender = rdoMale.Checked ? 1 : 2;  //rdo必须限制有且只有一项选中
            bool flag = false;
            if (this.isAdd == 1) //新增
            {
                //新增
                flag = userBll.InsertUserInfo(user);
            }
            else if (this.isAdd == 2) //编辑
            {
                user.Id = Convert.ToInt32(lbId.Text);
                flag = userBll.UpdateUserInfo(user);
            }
            else
            {
                throw new Exception("未知的isAdd值："+this.isAdd);
            }
            string msg = flag ? "操作成功" : "操作失败";
            MessageBox.Show(msg);
            //DialogResult = DialogResult.OK;
            this.Close();
        }