ConfigurationErrorsException 类

定义

发生配置错误时引发的异常。The exception that is thrown when a configuration error has occurred.

public ref class ConfigurationErrorsException : System::Configuration::ConfigurationException
[System.Serializable]
public class ConfigurationErrorsException : System.Configuration.ConfigurationException
type ConfigurationErrorsException = class
    inherit ConfigurationException
Public Class ConfigurationErrorsException
Inherits ConfigurationException
继承
属性

示例

下面的代码示例创建一个自定义节, 并ConfigurationErrorsException在修改其属性时生成异常。The following code example creates a custom section and generates a ConfigurationErrorsException exception when it modifies its properties.

using System;
using System.Configuration;
using System.Collections.Specialized;
using System.Collections;

namespace Samples.AspNet
{

    // Define a custom section.
    public sealed class CustomSection :
       ConfigurationSection
    {
        public CustomSection()
        {
        }

        [ConfigurationProperty("fileName", DefaultValue = "default.txt",
                    IsRequired = true, IsKey = false)]
        [StringValidator(InvalidCharacters = " ~!@#$%^&*()[]{}/;'\"|\\",
            MinLength = 1, MaxLength = 60)]
        public string FileName
        {
            get
            {
                return (string)this["fileName"];
            }
            set
            {
                this["fileName"] = value;
            }
        }

        [ConfigurationProperty("maxUsers", DefaultValue = (long)10,
            IsRequired = false)]
        [LongValidator(MinValue = 1, MaxValue = 100,
            ExcludeRange = false)]
        public long MaxUsers
        {
            get
            {
                return (long)this["maxUsers"];
            }
            set
            {
                this["maxUsers"] = value;
            }
        }

    }


    // Create the custom section and write it to
    // the configuration file.
    class UsingConfigurationErrorsException
    {
        // Create a custom section.
        static UsingConfigurationErrorsException()
        {
            // Get the application configuration file.
            System.Configuration.Configuration config =
                    ConfigurationManager.OpenExeConfiguration(
                    ConfigurationUserLevel.None);

            // If the section does not exist in the configuration
            // file, create it and save it to the file.
            if (config.Sections["CustomSection"] == null)
            {
                CustomSection custSection = new CustomSection();
                config.Sections.Add("CustomSection", custSection);
                custSection =
                    config.GetSection("CustomSection") as CustomSection;
                custSection.SectionInformation.ForceSave = true;
                config.Save(ConfigurationSaveMode.Full);
            }
        }
        
        // Modify a custom section and cause configuration 
        // error exceptions.
        static void ModifyCustomSection()
        {

            try
            {
                // Get the application configuration file.
                System.Configuration.Configuration config =
                        ConfigurationManager.OpenExeConfiguration(
                        ConfigurationUserLevel.None);

                CustomSection custSection =
                   config.Sections["CustomSection"] as CustomSection;

                // Change the section properties.
                custSection.FileName = "newName.txt";
                
                // Cause an exception.
                custSection.MaxUsers = custSection.MaxUsers + 100;

                if (!custSection.ElementInformation.IsLocked)
                    config.Save();
                else
                    Console.WriteLine(
                        "Section was locked, could not update.");
            }
            catch (ConfigurationErrorsException err)
            {

                string msg = err.Message;
                Console.WriteLine("Message: {0}", msg);

                string fileName = err.Filename;
                Console.WriteLine("Filename: {0}", fileName);

                int lineNumber = err.Line;
                Console.WriteLine("Line: {0}", lineNumber.ToString());

                string bmsg = err.BareMessage;
                Console.WriteLine("BareMessage: {0}", bmsg);

                string source = err.Source;
                Console.WriteLine("Source: {0}", source);

                string st = err.StackTrace;
                Console.WriteLine("StackTrace: {0}", st);

            }
        }

        static void Main(string[] args)
        {
            ModifyCustomSection();
        }

    
    }
}
Imports System.Configuration
Imports System.Collections.Specialized
Imports System.Collections



' Define a custom section.

NotInheritable Public Class CustomSection
    Inherits ConfigurationSection
    
    Public Sub New() 
    
    End Sub
    
    
    <ConfigurationProperty("fileName", DefaultValue:="default.txt", IsRequired:=True, IsKey:=False), StringValidator(InvalidCharacters:=" ~!@#$%^&*()[]{}/;'""|\", MinLength:=1, MaxLength:=60)> _
    Public Property FileName() As String
        Get
            Return CStr(Me("fileName"))
        End Get
        Set(ByVal value As String)
            Me("fileName") = value
        End Set
    End Property
    
    
    <ConfigurationProperty("maxUsers", DefaultValue:=10, IsRequired:=False), LongValidator(MinValue:=1, MaxValue:=100, ExcludeRange:=False)> _
    Public Property MaxUsers() As Long
        Get
            Return Fix(Me("maxUsers"))
        End Get
        Set(ByVal value As Long)
            Me("maxUsers") = value
        End Set
    End Property
End Class


' Create the custom section and write it to
' the configuration file.

Class UsingConfigurationErrorsException
    
    ' Create a custom section.
    Shared Sub New()

        ' Get the application configuration file.
        Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

        ' If the section does not exist in the configuration
        ' file, create it and save it to the file.
        If config.Sections("CustomSection") Is Nothing Then
            Dim custSection As New CustomSection()
            config.Sections.Add("CustomSection", custSection)
            custSection = config.GetSection("CustomSection")
            custSection.SectionInformation.ForceSave = True
            config.Save(ConfigurationSaveMode.Full)
        End If

    End Sub
    
    
    ' Modify a custom section and cause configuration 
    ' error exceptions.
    Shared Sub ModifyCustomSection() 
        
        Try
            ' Get the application configuration file.
            Dim config _
            As System.Configuration.Configuration = _
            ConfigurationManager.OpenExeConfiguration( _
            ConfigurationUserLevel.None)

            Dim custSection _
            As CustomSection = _
            config.Sections("CustomSection")
             
            ' Change the section properties.
            custSection.FileName = "newName.txt"
            
            ' Cause an exception.
            custSection.MaxUsers = _
            custSection.MaxUsers + 100
            
            If Not custSection.ElementInformation.IsLocked Then
                config.Save()
            Else
                Console.WriteLine( _
                "Section was locked, could not update.")
            End If
        Catch err As ConfigurationErrorsException
            
            Dim msg As String = err.Message
            Console.WriteLine("Message: {0}", msg)
            Dim fileName As String = err.Filename
            Console.WriteLine("Filename: {0}", _
            fileName)
            Dim lineNumber As Integer = err.Line
            Console.WriteLine("Line: {0}", _
            lineNumber.ToString())
            Dim bmsg As String = err.BareMessage
            Console.WriteLine("BareMessage: {0}", bmsg)
            Dim src As String = err.Source
            Console.WriteLine("Source: {0}", src)
            Dim st As String = err.StackTrace
            Console.WriteLine("StackTrace: {0}", st)
        End Try

    End Sub

    Shared Sub Main(ByVal args() As String) 
        ModifyCustomSection()
    
    End Sub
End Class

下面的示例是上一个示例使用的配置摘录。The following example is a configuration excerpt used by the previous example.

<?xml version="1.0" encoding="utf-8"?>  
<configuration>  
  <configSections>  
    <section name="CustomSection" type="Samples.AspNet.CustomSection,   
      ConfigurationErrorsException, Version=1.0.0.0, Culture=neutral,   
      PublicKeyToken=null" allowDefinition="Everywhere"   
      allowExeDefinition="MachineToApplication"   
      restartOnExternalChanges="true" />  
  </configSections>  
  <CustomSection fileName="default.txt" maxUsers="10" />  
</configuration>  

注解

当读取或写入配置信息时, 如果发生任何错误, 则会引发异常。ConfigurationErrorsExceptionThe ConfigurationErrorsException exception is thrown when any error occurs while configuration information is being read or written.

构造函数

ConfigurationErrorsException()

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(SerializationInfo, StreamingContext)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String, Exception)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String, Exception, String, Int32)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of a ConfigurationErrorsException class.

ConfigurationErrorsException(String, Exception, XmlNode)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String, Exception, XmlReader)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String, String, Int32)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String, XmlNode)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

ConfigurationErrorsException(String, XmlReader)

初始化 ConfigurationErrorsException 类的新实例。Initializes a new instance of the ConfigurationErrorsException class.

属性

BareMessage

获取对引发此配置异常的原因的说明。Gets a description of why this configuration exception was thrown.

Data

获取提供有关异常的其他用户定义信息的键/值对集合。Gets a collection of key/value pairs that provide additional user-defined information about the exception.

(继承自 Exception)
Errors

获取详细描述引发此 ConfigurationErrorsException 异常的原因的错误集合。Gets a collection of errors that detail the reasons this ConfigurationErrorsException exception was thrown.

Filename

获取导致引发此配置异常的配置文件的路径。Gets the path to the configuration file that caused this configuration exception to be thrown.

HelpLink

获取或设置指向与此异常关联的帮助文件链接。Gets or sets a link to the help file associated with this exception.

(继承自 Exception)
HResult

获取或设置 HRESULT(一个分配给特定异常的编码数字值)。Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.

(继承自 Exception)
InnerException

获取导致当前异常的 Exception 实例。Gets the Exception instance that caused the current exception.

(继承自 Exception)
Line

获取配置文件中引发此配置异常处的行号。Gets the line number within the configuration file at which this configuration exception was thrown.

Message

获取对引发此配置异常的原因的补充说明。Gets an extended description of why this configuration exception was thrown.

Source

获取或设置导致错误的应用程序或对象的名称。Gets or sets the name of the application or the object that causes the error.

(继承自 Exception)
StackTrace

获取调用堆栈上的即时框架字符串表示形式。Gets a string representation of the immediate frames on the call stack.

(继承自 Exception)
TargetSite

获取引发当前异常的方法。Gets the method that throws the current exception.

(继承自 Exception)

方法

Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetBaseException()

当在派生类中重写时,返回 Exception,它是一个或多个并发的异常的根源。When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions.

(继承自 Exception)
GetFilename(XmlNode)

获取引发此配置异常时从中加载内部 XmlNode 对象的配置文件的路径。Gets the path to the configuration file from which the internal XmlNode object was loaded when this configuration exception was thrown.

GetFilename(XmlReader)

获取引发此配置异常时内部 XmlReader 正在读取的配置文件的路径。Gets the path to the configuration file that the internal XmlReader was reading when this configuration exception was thrown.

GetHashCode()

用作默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetLineNumber(XmlNode)

获取引发此配置异常时内部 XmlNode 对象所表示的配置文件中的行号。Gets the line number within the configuration file that the internal XmlNode object represented when this configuration exception was thrown.

GetLineNumber(XmlReader)

获取引发此配置异常时内部 XmlReader 对象正在处理的配置文件中的行号。Gets the line number within the configuration file that the internal XmlReader object was processing when this configuration exception was thrown.

GetObjectData(SerializationInfo, StreamingContext)

用发生此配置异常处的文件名和行号设置 SerializationInfo 对象。Sets the SerializationInfo object with the file name and line number at which this configuration exception occurred.

GetType()

获取当前实例的运行时类型。Gets the runtime type of the current instance.

(继承自 Exception)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

创建并返回当前异常的字符串表示形式。Creates and returns a string representation of the current exception.

(继承自 Exception)

事件

SerializeObjectState

当异常被序列化用来创建包含有关该异常的徐列出数据的异常状态对象时会出现该问题。Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception.

(继承自 Exception)

适用于