C# ConfigurationManager立即给出TypeInitializationException

我正在制作一个需要读取其设置配置文件的应用程序

我在App_config文件中定义了如下设置：

public sealed class SSWConfig : ConfigurationSection
    {
        private static SSWConfig settings = ConfigurationManager.GetSection("sswcomm") as SSWConfig;

        public static SSWConfig Settings
        {
            get { return settings; }
        }

        [ConfigurationProperty("id", DefaultValue = "", IsKey = true, IsRequired = true)]
        [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\", MinLength = 1, MaxLength = 256)]
        public string Id
        {
            get { return (string)this["id"]; }
            set { this["id"] = value; }
        }

        [ConfigurationProperty("connectionInterval", DefaultValue = "", IsKey = true, IsRequired = true)]
        public int ConnectionInterval
        {
            get { return (int)this["connectionInterval"]; }
            set { this["connectionInterval"] = value; }
        }

        [ConfigurationProperty("folders", IsDefaultCollection = true, IsKey = false, IsRequired = true)]
        public SSWConfigFolderCollection Folders
        {
            get { return base["folders"] as SSWConfigFolderCollection; }
        }

    }

    public sealed class SSWConfigFolderCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new SSWConfigFolderElement();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            return ((SSWConfigFolderElement)element).Id;
        }

        new public SSWConfigFolderElement this[string Id]
        {
            get { return (SSWConfigFolderElement)base.BaseGet(Id); }
        }

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

        public SSWConfigFolderElement this[int index]
        {
            get { return (SSWConfigFolderElement)base.BaseGet(index); }
        }

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

    public sealed class SSWConfigFolderElement : ConfigurationElement
    {
        [ConfigurationProperty("id", DefaultValue = "", IsKey = true, IsRequired = true)]
        [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\", MinLength = 1, MaxLength = 256)]
        public string Id
        {
            get { return (string)base["id"]; }
            set { base["id"] = value; }
        }

        [ConfigurationProperty("enable", DefaultValue = "true", IsKey = false, IsRequired = true)]
        public bool Enable
        {
            get { return (string)base["enable"] == "true"; }
            set { if (value) { base["enable"] = "true"; } else { base["enable"] = "false"; } }
        }

        [ConfigurationProperty("includeSubFolders", DefaultValue = "true", IsKey = false, IsRequired = true)]
        public bool IncludeSubFolders
        {
            get { return (string)base["includeSubFolders"] == "true"; }
            set { if (value) { base["includeSubFolders"] = "true"; } else { base["enable"] = "false"; } }
        }

        [ConfigurationProperty("fromPath", DefaultValue = "", IsKey = false, IsRequired = true)]
        public string FromPath
        {
            get { return (string)base["fromPath"]; }
            set { base["fromPath"] = value; }
        }

        [ConfigurationProperty("wildcard", DefaultValue = "*.*", IsKey = false, IsRequired = true)]
        public string Wildcard
        {
            get { return (string)base["wildcard"]; }
            set { base["wildcard"] = value; }
        }

        [ConfigurationProperty("recipientId", DefaultValue = "", IsKey = false, IsRequired = true)]
        [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\", MinLength = 1, MaxLength = 256)]
        public string RecipientId
        {
            get { return (string)base["recipientId"]; }
            set { base["recipientId"] = value; }
        }
    }

C代码是这样的：

public sealed class SSWConfig : ConfigurationSection
    {
        private static SSWConfig settings = ConfigurationManager.GetSection("sswcomm") as SSWConfig;

        public static SSWConfig Settings
        {
            get { return settings; }
        }

        [ConfigurationProperty("id", DefaultValue = "", IsKey = true, IsRequired = true)]
        [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\", MinLength = 1, MaxLength = 256)]
        public string Id
        {
            get { return (string)this["id"]; }
            set { this["id"] = value; }
        }

        [ConfigurationProperty("connectionInterval", DefaultValue = "", IsKey = true, IsRequired = true)]
        public int ConnectionInterval
        {
            get { return (int)this["connectionInterval"]; }
            set { this["connectionInterval"] = value; }
        }

        [ConfigurationProperty("folders", IsDefaultCollection = true, IsKey = false, IsRequired = true)]
        public SSWConfigFolderCollection Folders
        {
            get { return base["folders"] as SSWConfigFolderCollection; }
        }

    }

    public sealed class SSWConfigFolderCollection : ConfigurationElementCollection
    {
        protected override ConfigurationElement CreateNewElement()
        {
            return new SSWConfigFolderElement();
        }

        protected override object GetElementKey(ConfigurationElement element)
        {
            return ((SSWConfigFolderElement)element).Id;
        }

        new public SSWConfigFolderElement this[string Id]
        {
            get { return (SSWConfigFolderElement)base.BaseGet(Id); }
        }

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

        public SSWConfigFolderElement this[int index]
        {
            get { return (SSWConfigFolderElement)base.BaseGet(index); }
        }

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

    public sealed class SSWConfigFolderElement : ConfigurationElement
    {
        [ConfigurationProperty("id", DefaultValue = "", IsKey = true, IsRequired = true)]
        [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\", MinLength = 1, MaxLength = 256)]
        public string Id
        {
            get { return (string)base["id"]; }
            set { base["id"] = value; }
        }

        [ConfigurationProperty("enable", DefaultValue = "true", IsKey = false, IsRequired = true)]
        public bool Enable
        {
            get { return (string)base["enable"] == "true"; }
            set { if (value) { base["enable"] = "true"; } else { base["enable"] = "false"; } }
        }

        [ConfigurationProperty("includeSubFolders", DefaultValue = "true", IsKey = false, IsRequired = true)]
        public bool IncludeSubFolders
        {
            get { return (string)base["includeSubFolders"] == "true"; }
            set { if (value) { base["includeSubFolders"] = "true"; } else { base["enable"] = "false"; } }
        }

        [ConfigurationProperty("fromPath", DefaultValue = "", IsKey = false, IsRequired = true)]
        public string FromPath
        {
            get { return (string)base["fromPath"]; }
            set { base["fromPath"] = value; }
        }

        [ConfigurationProperty("wildcard", DefaultValue = "*.*", IsKey = false, IsRequired = true)]
        public string Wildcard
        {
            get { return (string)base["wildcard"]; }
            set { base["wildcard"] = value; }
        }

        [ConfigurationProperty("recipientId", DefaultValue = "", IsKey = false, IsRequired = true)]
        [StringValidator(InvalidCharacters = "  ~!@#$%^&*()[]{}/;’\"|\\", MinLength = 1, MaxLength = 256)]
        public string RecipientId
        {
            get { return (string)base["recipientId"]; }
            set { base["recipientId"] = value; }
        }
    }

现在，无论何时调用

SSWConfig

并将其放入变量中，我都会立即得到

TypeInitializationException

异常。我认为是因为

GetSection

部分返回

null

。这是因为我在App.config文件中犯了错误吗

---

带有嵌套元素的app.config对我来说是新的，所以可能是我定义错了。

刚刚发布了我的解决方案

显然，我让事情变得比实际情况更难。我从零开始，经过一些修改后，我的设置被读取

我遇到的另一个错误是，我从未真正读取过配置文件（oops），认为调用配置类时会自动读取配置文件

类别：

//设置
公共类SSWConfigSSWComm:ConfigurationSection
{
[配置属性（“id”）]
公共字符串Id
{
获取{返回（字符串）this[“id”]；}
设置{this[“id”]=value；}
}
[ConfigurationProperty（“connectionInterval”）]
公共int连接区间
{
获取{return（int）this[“connectionInterval”]；}
设置{this[“connectionInterval”]=value；}
}
[配置属性（“toPath”）]
公共字符串ToPath
{
获取{return（string）this[“toPath”]；}
设置{this[“toPath”]=value；}
}
[配置属性（“文件夹”）]
[ConfigurationCollection（typeof（SSWConfigFolderElement），AddItemName=“folder”）]
公共SSWConfigFolderElementCollection sswConfigFolders
{
获取{return（SSWConfigFolderElementCollection）基[“文件夹”]；}
}
}
//背景
[配置集合（类型（SSWConfigFolderElement））]
公共类SSWConfigFolderElementCollection:ConfigurationElementCollection
{
新的公共SSWConfigFolderElement此[字符串名称]
{
获取{return（SSWConfigFolderElement）base.BaseGet（name）；}
}
公共SSWConfigFolderElement此[int索引]
{
获取{return（SSWConfigFolderElement）base.BaseGet（index）；}
}
受保护的覆盖ConfigurationElement CreateNewElement（）
{
返回新的SSWConfigFolderElement（）；
}
受保护的覆盖对象GetElementKey（ConfigurationElement元素）
{
返回（（SSWConfigFolderElement）元素）.Id；
}
}
公共类SSWConfigFolderElement:ConfigurationElement
{
[配置属性（“id”）]
公共字符串Id
{
获取{return（string）base[“id”]；}
设置{base[“id”]=value；}
}
[配置属性（“启用”）]
公共布尔启用
{
获取{return（string）base[“enable”]=“true”；}
设置{if（value）{base[“enable”]=“true”；}否则{base[“enable”]=“false”；}
}
[ConfigurationProperty（“includeSubFolders”）]
公共bool包括子文件夹
{
获取{return（string）base[“includeSubFolders”]==“true”；}
设置{if（value）{base[“includeSubFolders”]=“true”}否则{base[“enable”]=“false”；}
}
[ConfigurationProperty（“fromPath”）]
公共字符串FromPath
{
获取{return（string）base[“fromPath”]；}
设置{base[“fromPath”]=value；}
}
[配置属性（“通配符”）]
公共字符串通配符
{
获取{return（string）base[“wildcard”]；}
集合{base[“通配符”]=value；}
}
[ConfigurationProperty（“recipientId”）]
[StringValidator（InvalidCharacters=“~！@$%^&*（）[]{}/；”\“\”，MinLength=1，MaxLength=256）]
公共字符串RecipientId
{
获取{return（string）base[“recipientId”]；}
设置{base[“recipientId”]=value；}
}
}

收集数据

Configuration conf=ConfigurationManager.OpenExeConfiguration（ConfigurationUserLevel.None）；
SSWConfigSSWComm sc=（SSWConfigSSWComm）conf.GetSection（“sswcomm”）；
字符串Id=sc.Id；
long lngInterval=sc.ConnectionInterval；
字符串toPath=sc.toPath；
SSWConfigFolderElementCollection fec=sc.sswConfigFolders；
foreach（fec中的SSWConfigFolderElement fe）
{
字符串fromPath=fe.fromPath；
字符串通配符=fe.通配符；
bool includeSubFolders=fe.includeSubFolders；
字符串recipientId=fe.recipientId；
sp.GetFiles（Id、recipientId、fromPath、toPath、通配符，包括子文件夹）；
}

---

希望这会对将来的人有所帮助。

只是发布我的解决方案

很明显，我让它变得比实际更难。我从零开始，经过一些修改，我的设置被读取

我遇到的另一个错误是，我从未真正读取过配置文件（oops），认为调用配置类时会自动读取配置文件

类别：

//设置
公共类SSWConfigSSWComm:ConfigurationSection
{
[配置属性（“id”）]
公共字符串Id
{
获取{返回（字符串）this[“id”]；}
设置{this[“id”]=value；}
}
[ConfigurationProperty（“connectionInterval”）]
公共int连接区间
{
获取{return（int）this[“connectionInterval”]；}
设置{this[“connectionInterval”]=value；}
}
[配置属性（“toPath”）]
公共字符串ToPath
{
获取{return（string）this[“toPath”]；}
设置{this[“toPath”]=value；}
}
[配置属性（“文件夹”）]
[ConfigurationCollection（typeof（SSWConfigFolderElement），AddItemName=“folder”）]
公共SSWConfigFolderElementCollection sswConfigFolders
{
获取{return（SSWConfigFolderElementCollection）基[“文件夹”]；}
}
}
//背景
[确认]