我正在尝试在项目中实现自定义配置部分,但我一直遇到我不理解的异常。我希望有人可以填补这里的空白。
我的 App.config
看起来像这样:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="ServicesSection" type="RT.Core.Config.ServicesConfigurationSectionHandler, RT.Core"/>
</configSections>
<ServicesSection type="RT.Core.Config.ServicesSection, RT.Core">
<Services>
<AddService Port="6996" ReportType="File" />
<AddService Port="7001" ReportType="Other" />
</Services>
</ServicesSection>
</configuration>
我有一个定义如下的 ServiceConfig
元素:
public class ServiceConfig : ConfigurationElement
{
public ServiceConfig() {}
public ServiceConfig(int port, string reportType)
{
Port = port;
ReportType = reportType;
}
[ConfigurationProperty("Port", DefaultValue = 0, IsRequired = true, IsKey = true)]
public int Port
{
get { return (int) this["Port"]; }
set { this["Port"] = value; }
}
[ConfigurationProperty("ReportType", DefaultValue = "File", IsRequired = true, IsKey = false)]
public string ReportType
{
get { return (string) this["ReportType"]; }
set { this["ReportType"] = value; }
}
}
我有一个 ServiceCollection
定义如下:
public class ServiceCollection : ConfigurationElementCollection
{
public ServiceCollection()
{
Console.WriteLine("ServiceCollection Constructor");
}
public ServiceConfig this[int index]
{
get { return (ServiceConfig)BaseGet(index); }
set
{
if (BaseGet(index) != null)
{
BaseRemoveAt(index);
}
BaseAdd(index, value);
}
}
public void Add(ServiceConfig serviceConfig)
{
BaseAdd(serviceConfig);
}
public void Clear()
{
BaseClear();
}
protected override ConfigurationElement CreateNewElement()
{
return new ServiceConfig();
}
protected override object GetElementKey(ConfigurationElement element)
{
return ((ServiceConfig) element).Port;
}
public void Remove(ServiceConfig serviceConfig)
{
BaseRemove(serviceConfig.Port);
}
public void RemoveAt(int index)
{
BaseRemoveAt(index);
}
public void Remove(string name)
{
BaseRemove(name);
}
}
我缺少的部分是为处理程序做什么。最初,我尝试实现一个 IConfigurationSectionHandler
但发现了两件事:
- 没用
- 它已被弃用。
我现在完全不知道该怎么做才能从配置中读取我的数据。请帮忙!
最佳答案
前面的答案是正确的,但我也会给你所有的代码。
您的 app.config 应如下所示:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="ServicesSection" type="RT.Core.Config.ServiceConfigurationSection, RT.Core"/>
</configSections>
<ServicesSection>
<Services>
<add Port="6996" ReportType="File" />
<add Port="7001" ReportType="Other" />
</Services>
</ServicesSection>
</configuration>
您的 ServiceConfig
和 ServiceCollection
类保持不变。
你需要一个新类:
public class ServiceConfigurationSection : ConfigurationSection
{
[ConfigurationProperty("Services", IsDefaultCollection = false)]
[ConfigurationCollection(typeof(ServiceCollection),
AddItemName = "add",
ClearItemsName = "clear",
RemoveItemName = "remove")]
public ServiceCollection Services
{
get
{
return (ServiceCollection)base["Services"];
}
}
}
这应该可以解决问题。要使用它,您可以使用:
ServiceConfigurationSection serviceConfigSection =
ConfigurationManager.GetSection("ServicesSection") as ServiceConfigurationSection;
ServiceConfig serviceConfig = serviceConfigSection.Services[0];
关于c# - 如何使用 ConfigurationElementCollection 实现 ConfigurationSection,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3935331/