framenode.cs

结构很好的三层数据访问组件。开放源码。是微软企业库数据访问的替代产品之一。

namespace FrameCountry
{
    using System;
    using System.IO;
    using System.Reflection;
    using System.Xml;

    internal class FrameNode
    {
        private string ClassAlias = "ND";
        private FrameCity frameCity = new FrameCity();

        public XmlNode GetNode(string ServiceName, string OperatorName, ref string ErrorInfo)
        {
            string functionAlias = "02";
            try
            {
                XmlDocument document = new XmlDocument();
                document.Load(Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase) + @"\" + ServiceName + ".xml");
                int count = document.SelectNodes("./ConfigList/" + OperatorName).Count;
                if (count != 1)
                {
                    throw new Exception(string.Concat(new object[] { "节点 ", OperatorName, " 的节点数目为 ", count, " ，不唯一！" }));
                }
                return document.SelectNodes("./ConfigList/" + OperatorName)[0];
            }
            catch (Exception exception)
            {
                ErrorInfo = this.frameCity.DealErrorInfo(this.ClassAlias, functionAlias, "读取 " + ServiceName + ".xml 文件下节点 " + OperatorName + " 错误，错误信息如下：\n\r" + exception.Message);
            }
            return null;
        }

        public bool GetNodeInnerText(string ServiceName, string XPathName, ref string InnerText, ref string ErrorInfo)
        {
            string functionAlias = "01";
            try
            {
                XmlDocument document = new XmlDocument();
                document.Load(Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase) + @"\" + ServiceName + ".xml");
                InnerText = document.SelectNodes(XPathName).Item(0).InnerText;
            }
            catch (Exception exception)
            {
                ErrorInfo = this.frameCity.DealErrorInfo(this.ClassAlias, functionAlias, "配置文件 " + ServiceName + ".xml 读取错误！，错误信息：\n\r" + exception.Message);
                return false;
            }
            return true;
        }

        public bool SetNodeInnerText(string ServiceName, string XPathName, string InnerText, ref string ErrorInfo)
        {
            string functionAlias = "00";
            try
            {
                XmlDocument document = new XmlDocument();
                string directoryName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);
                directoryName = directoryName.Substring(6, directoryName.Length - 6);
                document.Load(directoryName + @"\" + ServiceName + ".xml");
                document.SelectNodes(XPathName).Item(0).InnerText = InnerText;
                document.Save(directoryName + @"\" + ServiceName + ".xml");
            }
            catch (Exception exception)
            {
                ErrorInfo = this.frameCity.DealErrorInfo(this.ClassAlias, functionAlias, "配置文件 " + ServiceName + ".xml 写入错误！，错误信息：\n\r" + exception.Message);
                return false;
            }
            return true;
        }
    }
}