/// <summary>
/// 按节点名称从配置信息中取得节点，并将节点信息缓存，建立文件依赖
/// </summary>
/// <param name="sectionName">节点名称</param>
/// <param name="checkNullSection">如果返回null，是否抛出异常</param>
/// <returns>配置节点</returns>
/// <remarks>
/// 按名称获取配置节点信息。返回ConfigurationSection的派生类实体，实体类需由用户自定义。
/// <code source="..\Framework\TestProjects\Deluxeworks.Library.WebTest\Configuration\Default.aspx.cs" region="Using Broker" lang="cs" title="使用配置管理" />
/// </remarks>
public static ConfigurationSection GetSection(string sectionName, bool checkNullSection = false)
{
ConfigurationSection section;
if (false == ConfigurationSectionCache.Instance.TryGetValue(sectionName, out section))
{
ConfigFilesSetting settings = LoadFilesSetting();
System.Configuration.Configuration globalConfig = null;
System.Configuration.Configuration config = GetFinalConfiguration(settings, out globalConfig);
section = config.GetSectionRecursively(sectionName);
List <string> dependentFiles = new List <string>();
dependentFiles.Add(settings.MachineConfigurationFile);
dependentFiles.Add(settings.LocalConfigurationFile);
dependentFiles.Add(settings.MetaConfigurationFile);
dependentFiles.Add(settings.GlobalConfigurationFile);
string configSourceFile = globalConfig.GetSectionRelativeFile(section);
if (configSourceFile.IsNotEmpty())
{
dependentFiles.Add(configSourceFile);
}
FileCacheDependency dependency = new FileCacheDependency(true, dependentFiles.ToArray());
ConfigurationSectionCache.Instance.Add(sectionName, section, dependency);
}
if (checkNullSection)
{
section.CheckSectionNotNull(sectionName);
}
return(section);
}