/// <summary>
        /// 页面验证
        /// </summary>
        /// <returns></returns>
        private string PageVerification()
        {
            string strErroInfo = string.Empty;

            if (txtDesignDataName.Text == string.Empty)
            {
                strErroInfo = "请输入设计数据名称";
                return(strErroInfo);
            }
            else
            {
                if (Verification.IsCheckString(txtDesignDataName.Text))
                {
                    strErroInfo = "设计数据名称不能输入非法字符";
                    return(strErroInfo);
                }
            }

            if (txtDesignDataSumlieter.Text == string.Empty)
            {
                strErroInfo = "请输入设计数据提交者";
                return(strErroInfo);
            }
            else
            {
                if (Verification.IsCheckString(txtDesignDataSumlieter.Text))
                {
                    strErroInfo = "设计数据提交者不能输入非法字符";
                    return(strErroInfo);
                }
            }

            if (txtHelicopterName.Text == string.Empty)
            {
                strErroInfo = "请输入直升机名称";
                return(strErroInfo);
            }
            else
            {
                if (Verification.IsCheckSignleString(txtHelicopterName.Text))
                {
                    strErroInfo = "直升机名称不能输入非法字符";
                    return(strErroInfo);
                }
            }

            if (txtDesignTakingWeight.Text != string.Empty)
            {
                if (Verification.IsDoubleNumer(txtDesignTakingWeight.Text) == false)
                {
                    strErroInfo = "设计起飞重量格式错误";
                    return(strErroInfo);
                }
            }

            if (txtDagtaRemark.Text != string.Empty)
            {
                if (Verification.IsCheckRemarkString(txtDagtaRemark.Text))
                {
                    strErroInfo = "数据备注不能输入非法字符";
                    return(strErroInfo);
                }
            }

            return(strErroInfo);
        }