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using System;
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using System.Collections.Generic;
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using System.Xml;
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using System.Text;
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using System.IO;
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namespace Mesnac.Basic
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{
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/// <summary>
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/// 组态工程运行配置解析类
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/// </summary>
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public class RunSchema
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{
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#region 定义变量
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private string _projectPath = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(typeof(RunSchema).Assembly.CodeBase).Replace("file:\\", String.Empty), "Data", "MCProject"); //组态工程路径
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private string _eventConfigPath = String.Empty; //事件处理（Action）配置文件路径
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private string _runSchemaFilePath = "RunSchema.xml"; //运行结构配置文件路径
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private Dictionary<string, string> _runSchemaDic = new Dictionary<string, string>();
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#endregion
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#region 定义属性
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public Dictionary<string, string> RunSchemaDic
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{
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get
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{
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if (_runSchemaDic.Count == 0)
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{
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ParseFromRunSchema();
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}
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return _runSchemaDic;
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}
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private set
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{
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_runSchemaDic = value;
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}
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}
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/// <summary>
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/// 组态工程路径
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/// </summary>
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public string ProjectPath
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{
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get { return this._projectPath; }
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set { this._projectPath = value; }
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}
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/// <summary>
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/// 事件处理（Action）配置文件路径
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/// </summary>
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public string EventConfigPath
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{
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get { return this._eventConfigPath; }
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set { this._eventConfigPath = value; }
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}
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#endregion
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#region 单例模式实现
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private static RunSchema _this; //私有静态实例，保存全局作用域中的唯一实例
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/// <summary>
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/// 静态实例属性
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/// </summary>
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public static RunSchema Instance
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{
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get
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{
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if (null == _this)
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_this = new RunSchema();
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return _this;
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}
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}
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/// <summary>
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/// 私有构造方法
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/// </summary>
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private RunSchema()
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{
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this._runSchemaDic = new Dictionary<string, string>();
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}
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#endregion
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#region 基本信息
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public string FilePath()
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{
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return Path.Combine(this._projectPath, this._runSchemaFilePath);
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}
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#endregion
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#region 检测配置文件是否存在
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/// <summary>
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/// 检测配置文件是否存在（先检测组态工程目录，在检测事件处理（Action）配置文件路径）
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/// </summary>
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/// <returns>存在返回true，否则返回false</returns>
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public bool Exists()
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{
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string runSchemaFile = FilePath();
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string runSchemaFile2 = Path.Combine(this._eventConfigPath, this._runSchemaFilePath);
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if (File.Exists(runSchemaFile) || File.Exists(runSchemaFile2))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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#endregion
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#region 解析运行环境主配置文件RunSchema.xml
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/// <summary>
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/// 解析运行环境主配置文件RunSchema.xml
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/// </summary>
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public void ParseFromRunSchema()
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{
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try
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{
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//如果组态工程目录（MCProject）下有RunSchema文件，则首先以组态工程目录下的文件为配置文件，
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//否则以事件处理（Action）配置文件所在的目录下的RunSchema文件为准
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string runSchemaFile = FilePath();
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Dictionary<string, string> dic = new Dictionary<string, string>();
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if (!File.Exists(runSchemaFile))
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{
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runSchemaFile = Path.Combine(this._eventConfigPath, this._runSchemaFilePath);
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}
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if (File.Exists(runSchemaFile))
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{
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XmlDocument doc = new XmlDocument();
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doc.Load(runSchemaFile);
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XmlNodeList nodeList = doc.GetElementsByTagName("add");
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foreach (XmlNode node in nodeList)
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{
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string key = node.Attributes["key"].Value;
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if (!dic.ContainsKey(key))
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{
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string value = node.Attributes["value"].Value;
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dic.Add(key, value);
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}
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else
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{
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//存在重复键
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ICSharpCode.Core.LoggingService<RunSchema>.Error("配置文件中存在重复键的配置项，key = " + key);
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}
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}
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}
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else
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{
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//配置文件不存在
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ICSharpCode.Core.LoggingService<RunSchema>.Warn("应用程序配置文件不存在!");
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}
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this._runSchemaDic = dic;
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}
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catch (Exception ex)
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{
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ICSharpCode.Core.LoggingService<RunSchema>.Error(ex.Message);
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throw ex;
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}
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}
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/// <summary>
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/// 保存配置信息
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/// </summary>
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/// <param name="dic"></param>
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/// <param name="runSchemaFile"></param>
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public void UpdateToRunSchema(Dictionary<string, string> dic)
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{
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string runSchemaFile = FilePath();
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if (dic != null && dic.Count > 0)
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{
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XmlDocument doc = new XmlDocument();
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XmlElement root = doc.CreateElement("configuration");
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foreach (string key in dic.Keys)
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{
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XmlElement eAdd = doc.CreateElement("add");
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XmlAttribute eAttKey = doc.CreateAttribute("key");
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eAttKey.Value = key;
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XmlAttribute eAttValue = doc.CreateAttribute("value");
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eAttValue.Value = dic[key];
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eAdd.Attributes.Append(eAttKey);
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eAdd.Attributes.Append(eAttValue);
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root.AppendChild(eAdd);
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}
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doc.AppendChild(root);
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doc.Save(runSchemaFile);
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}
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ParseFromRunSchema();
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}
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/// <summary>
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/// 更新配置节点至文件
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/// </summary>
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/// <param name="key">要更新的配置项</param>
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/// <param name="newValue">要更新的配置项的值</param>
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public void UpdateNodeValueToRunSchema(string key, string newValue)
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{
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try
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{
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string runSchemaFile = FilePath();
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if (File.Exists(runSchemaFile))
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{
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XmlDocument doc = new XmlDocument();
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doc.Load(runSchemaFile);
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XmlNodeList nodeList = doc.GetElementsByTagName("add");
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bool flag = false;
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foreach (XmlNode node in nodeList)
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{
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if (node.Attributes["key"].Value == key)
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{
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node.Attributes["value"].Value = newValue;
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flag = true;
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break;
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}
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}
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if (!flag)
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{
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XmlElement eAdd = doc.CreateElement("add");
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XmlAttribute eAttKey = doc.CreateAttribute("key");
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eAttKey.Value = key;
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XmlAttribute eAttValue = doc.CreateAttribute("value");
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eAttValue.Value = newValue;
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eAdd.Attributes.Append(eAttKey);
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eAdd.Attributes.Append(eAttValue);
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doc.DocumentElement.AppendChild(eAdd);
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}
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doc.Save(runSchemaFile);
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}
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else
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{
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//配置文件不存在
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ICSharpCode.Core.LoggingService<RunSchema>.Warn("应用程序配置文件不存在!");
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}
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}
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catch (Exception ex)
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{
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ICSharpCode.Core.LoggingService<RunSchema>.Error(ex.Message);
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throw ex;
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}
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ParseFromRunSchema();
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}
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#endregion
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#region 获取RunSchema配置文件中配置项的值
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/// <summary>
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/// 获取RunSchema配置文件中配置项的值
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/// </summary>
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/// <param name="key">配置型</param>
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/// <param name="defaultValue">获取不到时的默认值</param>
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/// <returns>返回对应配置项的值</returns>
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public string GetConfigValue(string key, string defaultValue)
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{
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string value = string.Empty;
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if (this.RunSchemaDic.TryGetValue(key, out value))
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{
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return value;
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}
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return defaultValue;
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}
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public bool GetConfigValue(string key, bool defaultValue)
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{
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string value = GetConfigValue(key, String.Empty);
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bool result = defaultValue;
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if (bool.TryParse(value, out result))
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{
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return result;
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}
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else
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{
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return defaultValue;
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}
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}
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public int GetConfigValue(string key, int defaultValue)
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{
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string value = GetConfigValue(key, String.Empty);
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int result = defaultValue;
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if (int.TryParse(value, out result))
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{
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return result;
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}
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else
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{
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return defaultValue;
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}
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}
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#endregion
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#region 判断Schema文件是否存在
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/// <summary>
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/// 判断Schema文件是否存在
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/// </summary>
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/// <returns>存在返回true，失败返回false</returns>
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public bool IsSchemaExists()
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{
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string runSchemaFile = FilePath();
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if (File.Exists(runSchemaFile))
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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#endregion
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}
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}
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