InstallException 类

定义

在安装的提交、回滚或卸载阶段发生错误时引发的异常。

public ref class InstallException : SystemException
[System.Serializable]
public class InstallException : SystemException
[<System.Serializable>]
type InstallException = class
    inherit SystemException
Public Class InstallException
Inherits SystemException
继承
InstallException
属性

示例

以下示例加上构造函数中的 InstallException 示例,组成了一个示例,其中显示了具有其自己的安装程序的程序集。 安装程序名为 MyInstaller具有属性 RunInstallerAttribute,指示此安装程序将由 Installutil.exe (安装程序工具) 调用。 Installutil.exe (安装程序工具) 调用方法CommitRollbackInstall以及UninstallCommit假设在提交程序集安装之前存在命名FileDoesNotExist.txt的文件的代码。 如果文件 FileDoesNotExist.txt 不存在, Commit 则引发一个 InstallException。 同样的情况 Uninstall 是,只有在命名 FileDoesNotExist.txt 的文件存在时,才会发生卸载。 否则,它会引发一个 InstallException。 在 Rollback中,将执行代码片段,这可能会引发异常。 如果引发异常,则会捕获该异常,并 InstallException 引发异常并将其传递给该异常。

备注

通过Installutil.exe帮助运行此示例。 在命令提示符中键入此项:

Installutil InstallException.exe

  • 或 -

Installutil /u InstallException.exe

#using <System.dll>
#using <System.Configuration.Install.dll>

using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Configuration::Install;
using namespace System::IO;

[RunInstaller(true)]
ref class MyInstaller: public Installer
{
public:
   virtual void Install( IDictionary^ savedState ) override
   {
      Installer::Install( savedState );
      Console::WriteLine( "Install ..." );
      
      // Commit is called when install goes through successfully.
      // Rollback is called if there is any error during Install.
      // Uncommenting the code below will lead to 'RollBack' being called,
      // currently 'Commit' shall be called.
      // throw new IOException();
   }


   virtual void Commit( IDictionary^ savedState ) override
   {
      Installer::Commit( savedState );
      Console::WriteLine( "Commit ..." );
      
      // Throw an error if a particular file doesn't exist.
      if (  !File::Exists( "FileDoesNotExist.txt" ) )
            throw gcnew InstallException;

      
      // Perform the final installation if the file exists.
   }


   virtual void Rollback( IDictionary^ savedState ) override
   {
      Installer::Rollback( savedState );
      Console::WriteLine( "RollBack ..." );
      try
      {
         
         // Performing some activity during rollback that raises an 'IOException*'.
         throw gcnew IOException;
      }
      catch ( Exception^ e ) 
      {
         throw gcnew InstallException( "IOException* raised",e );
      }

      
      // Perform the remaining rollback activites if no exception raised.
   }


   virtual void Uninstall( IDictionary^ savedState ) override
   {
      Installer::Uninstall( savedState );
      Console::WriteLine( "UnInstall ..." );
      
      // Throw an error if a particular file doesn't exist.
      if (  !File::Exists( "FileDoesNotExist.txt" ) )
            throw gcnew InstallException( "The file 'FileDoesNotExist'  does not exist" );

      
      // Perform the uninstall activites if the file exists.
   }

};

int main()
{
   Console::WriteLine( "This assembly is just an example for the Installer" );
}
using System;
using System.ComponentModel;
using System.Collections;
using System.Configuration.Install;
using System.IO;

[RunInstaller(true)]
public class MyInstaller : Installer
{
   public override void Install(IDictionary savedState)
   {
      base.Install(savedState);
      Console.WriteLine("Install ...");

      // Commit is called when install goes through successfully.
      // Rollback is called if there is any error during Install.

      // Uncommenting the code below will lead to 'RollBack' being called,
      // currently 'Commit' shall be called.

      // throw new IOException();
   }

   public override void Commit(IDictionary savedState)
   {
      base.Commit(savedState);
      Console.WriteLine("Commit ...");
      // Throw an error if a particular file doesn't exist.
      if(!File.Exists("FileDoesNotExist.txt"))
         throw new InstallException();
      // Perform the final installation if the file exists.
   }

   public override void Rollback(IDictionary savedState)
   {
      base.Rollback(savedState);
      Console.WriteLine("RollBack ...");
      try
      {
         // Performing some activity during rollback that raises an 'IOException'.
         throw new IOException();
      }
      catch(Exception e)
      {
         throw new InstallException("IOException raised", e);
      }
      // Perform the remaining rollback activites if no exception raised.
   }

   public override void Uninstall(IDictionary savedState)
   {
      base.Uninstall(savedState);
      Console.WriteLine("UnInstall ...");
      // Throw an error if a particular file doesn't exist.
      if(!File.Exists("FileDoesNotExist.txt"))
         throw new InstallException("The file 'FileDoesNotExist'" +
            " does not exist");
      // Perform the uninstall activites if the file exists.
   }
}

// An Assembly that has its own installer.
public class MyAssembly1
{
   public static void Main()
   {
      Console.WriteLine("This assembly is just an example for the Installer");
   }
}
Imports System.ComponentModel
Imports System.Collections
Imports System.Configuration.Install
Imports System.IO

<RunInstaller(True)> Public Class MyInstaller
   Inherits Installer

   Public Overrides Sub Install(savedState As IDictionary)
      MyBase.Install(savedState)
      Console.WriteLine("Install ...")

     ' Commit is called when install goes through successfully.
     ' Rollback is called if there is any error during Install.
     ' Uncommenting the code below will lead to 'RollBack' being called,
     ' currently 'Commit' shall be called.
     ' throw new IOException();

   End Sub

   Public Overrides Sub Commit(savedState As IDictionary)
      MyBase.Commit(savedState)
      Console.WriteLine("Commit ...")
      ' Throw an error if a particular file doesn't exist.
      If Not File.Exists("FileDoesNotExist.txt") Then
         Throw New InstallException()
      End If
      ' Perform the final installation if the file exists.
   End Sub

   Public Overrides Sub Rollback(savedState As IDictionary)
      MyBase.Rollback(savedState)
      Console.WriteLine("RollBack ...")
      Try
         ' Performing some activity during rollback that raises an 'IOException'.
         Throw New IOException()
      Catch e As Exception
         Throw New InstallException("IOException raised", e)
      End Try
   End Sub
    ' Perform the remaining rollback activites if no exception raised.

   Public Overrides Sub Uninstall(savedState As IDictionary)
      MyBase.Uninstall(savedState)
      Console.WriteLine("UnInstall ...")
      ' Throw an error if a particular file doesn't exist.
      If Not File.Exists("FileDoesNotExist.txt") Then
         Throw New InstallException("The file 'FileDoesNotExist'" + " does not exist")
      End If
      ' Perform the uninstall activites if the file exists.
   End Sub

End Class

' An Assembly that has its own installer.
Public Class MyAssembly1
   Public Shared Sub Main()
      Console.WriteLine("This assembly is just an example for the Installer")
   End Sub
End Class

构造函数

InstallException()

初始化 InstallException 类的新实例。

InstallException(SerializationInfo, StreamingContext)

用序列化数据初始化 InstallException 类的新实例。

InstallException(String)

初始化 InstallException 类的新实例,并指定要显示给用户的消息。

InstallException(String, Exception)

初始化 InstallException 类的新实例,并指定要向用户显示的消息,以及对作为该异常原因的内部异常的引用。

属性

Data

获取键/值对的集合,这些键/值对提供有关该异常的其他用户定义信息。

(继承自 Exception)
HelpLink

获取或设置指向与此异常关联的帮助文件链接。

(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)。

(继承自 Exception)
InnerException

获取导致当前异常的 Exception 实例。

(继承自 Exception)
Message

获取描述当前异常的消息。

(继承自 Exception)
Source

获取或设置导致错误的应用程序或对象的名称。

(继承自 Exception)
StackTrace

获取调用堆栈上的即时框架字符串表示形式。

(继承自 Exception)
TargetSite

获取引发当前异常的方法。

(继承自 Exception)

方法

Equals(Object)

确定指定对象是否等于当前对象。

(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本原因。

(继承自 Exception)
GetHashCode()

作为默认哈希函数。

(继承自 Object)
GetObjectData(SerializationInfo, StreamingContext)

当在派生类中重写时,用关于异常的信息设置 SerializationInfo

(继承自 Exception)
GetType()

获取当前实例的运行时类型。

(继承自 Exception)
MemberwiseClone()

创建当前 Object 的浅表副本。

(继承自 Object)
ToString()

创建并返回当前异常的字符串表示形式。

(继承自 Exception)

事件

SerializeObjectState
已过时。

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。

(继承自 Exception)

适用于

另请参阅