app.config 的自定义配置 - 部分的集合？

Question

我的头在剧烈地跳动！我以前做过这件事，但没有那么“深入”或复杂，我尝试了不同的方法来实现这一点，但都失败了。

所以，这是我想要的 app.config 中的自定义 XML：

<Profiles> <!--Collection-->
<Profile Name="Live">
   <Components>
    <Component Name="Portal" Type="Web" />
    <Component Name="Comms" Type="Web" />
    <Component Name="Scheduler" Type="WindowsService" ServiceName="LiveScheduler" />
  </Components>
  <Databases>
    <Database Name="Main" Connection="Data Source=.\SQL2008" />
    <Database Name="Staging" Connection="Data Source=SomeSite.co.uk" />
  </Databases>
</Profile>
<Profile Name="Test">
   <Components>
    <Component Name="Portal" Type="Web" />
    <Component Name="Comms" Type="Web" />
    <Component Name="Scheduler" Type="WindowsService" ServiceName="TestScheduler" />
  </Components>
  <Databases>
    <Database Name="Main" Connection="Data Source=.\SQL2008" />
    <Database Name="Staging" Connection="Data Source=Internal" />
  </Databases>
</Profile>
</Profiles>

所以一个 Profile 的集合，每个 Profile 都有一个子元素的集合（Components 是一个集合，然后 Component 是一个元素）

但是，我目前拥有多个配置文件之外的所有内容。我确实看到了问题，但不确定如何“修复”它。

代码：

public class Profile : ConfigurationSection
{
    [ConfigurationProperty("Name", IsRequired=true)]
    public string Name
    {
        get
        {
            return base["Name"] as string;
        }
            set
            {
                base["Name"] = value;
            }
        }

        [ConfigurationProperty("Components")]
        public ComponentCollection Components
        {
            get { return ((ComponentCollection)(base["Components"])); }
        }

        [ConfigurationProperty("Databases")]
        public DatabaseCollection Databases
        {
            get
            {
                return ((DatabaseCollection)(base["Databases"]));
            }
        }
    }

    [ConfigurationCollection(typeof(Component), AddItemName="Component")] 
    public class ComponentCollection : ConfigurationElementCollection
    {        
        protected override ConfigurationElement CreateNewElement()
        {
            return new Component();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            return ((Component)(element)).Name;
        }

        public Component this[int idx]
        {
            get
            {
                return base.BaseGet(idx) as Component;
            }
            set
            {
                if (base.BaseGet(idx) != null)
                {
                    base.BaseRemoveAt(idx);
                }
                this.BaseAdd(idx, value);
            }
        }

        public Component this[string key]
        {
            get
            {
                return base.BaseGet(key) as Component;
            }
            set
            {
                if (base.BaseGet(key) != null)
                {
                    base.BaseRemove(key);
                }
                this.BaseAdd(this.Count, value);
            }
        }
    }

    public class Component : ConfigurationElement
    {
        [ConfigurationProperty("Type", IsRequired = true)]
        public string Type
        {
            get
            {
                return this["Type"] as string;
            }
            set
            {
                this["Type"] = value;
            }
        }

        [ConfigurationProperty("Name", IsRequired = true, IsKey = true)]
        public string Name
        {
            get
            {
                return this["Name"] as string;
            }
            set
            {
                this["Name"] = value;
            }
        }

        [ConfigurationProperty("ServiceName", IsRequired = false)]
        public string ServiceName
        {
            get
            {
                return this["ServiceName"] as string;
            }
            set
            {
                this["ServiceName"] = value;
            }
        }
    }

    [ConfigurationCollection(typeof(Database), AddItemName = "Database")] 
    public class DatabaseCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new Database();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            return ((Database)(element)).Name;
        }


        public Database this[int idx]
        {
            get
            {
                return base.BaseGet(idx) as Database;
            }
            set
            {
                if (base.BaseGet(idx) != null)
                {
                    base.BaseRemoveAt(idx);
                }
                this.BaseAdd(idx, value);
            }
        }

        public Database this[string key]
        {
            get
            {
                return base.BaseGet(key) as Database;
            }
            set
            {
                if (base.BaseGet(key) != null)
                {
                    base.BaseRemove(key);;
                }

                this.BaseAdd(this.Count, value);
            }
        }
    }

    public class Database : ConfigurationElement
    {
        [ConfigurationProperty("Name", IsKey = true, IsRequired = true)]
        public string Name
        {
            get
            {
                return this["Name"] as string;
            }
            set
            {
                this["Name"] = value;
            }
        }

        [ConfigurationProperty("Connection", IsKey = false, IsRequired = true)]
        public string Connection
        {
            get
            {
                return this["Connection"] as string;
            }
            set
            {
                this["Connection"] = value;
            }
        }
    }

Answer 1

除了需要一个额外的级别之外，您的实现是正确的。将 Profile 从 ConfigurationSection 更改为 ConfigurationElement，然后创建一个包含 Profile 项集合的 ConfigurationSection Profiles。

这是一个很好的自动化测试案例，调试配置部分不费吹灰之力。

Answer 2

您需要将配置部分上移一级。

public class Profiles : ConfigurationSection
{
    [ConfigurationProperty("Profile")]
    public ProfileCollection Profile
    {
        get
        {
            return this["profile"] as ProfileCollection;
        }
    }
}    

这是我创建的一个部分。您应该可以通过以下方式让您的工作：

public class ImportConfiguration : ConfigurationSection
{
    [ConfigurationProperty("importMap")]
    public ImportMapElementCollection ImportMap
    {
        get
        {
            return this["importMap"] as ImportMapElementCollection;
        }
    }
}

public class ImportColumnMapElement : ConfigurationElement
{
    [ConfigurationProperty("localName", IsRequired = true, IsKey = true)]
    public string LocalName
    {
        get
        {
            return this["localName"] as string;
        }
        set
        {
            this["localName"] = value;
        }
    }

    [ConfigurationProperty("sourceName", IsRequired = true)]
    public string SourceName
    {
        get
        {
            return this["sourceName"] as string;
        }
        set
        {
            this["sourceName"] = value;
        }
    }
}

public class ImportMapElementCollection : ConfigurationElementCollection
{
    public ImportColumnMapElement this[object key]
    {
        get
        {
            return base.BaseGet(key) as ImportColumnMapElement;
        }
    }

    public override ConfigurationElementCollectionType CollectionType
    {
        get
        {
            return ConfigurationElementCollectionType.BasicMap;
        }
    }

    protected override string ElementName
    {
        get
        {
            return "columnMap";
        }
    }

    protected override bool IsElementName(string elementName)
    {
        bool isName = false;
        if (!String.IsNullOrEmpty(elementName))
            isName = elementName.Equals("columnMap");
        return isName;
    }

    protected override ConfigurationElement CreateNewElement()
    {
        return new ImportColumnMapElement();
    }

    protected override object GetElementKey(ConfigurationElement element)
    {
        return ((ImportColumnMapElement)element).LocalName;
    }
}