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InstallException Class

The exception that is thrown when an error occurs during the commit, rollback, or uninstall phase of an installation.


Namespace:  System.Configuration.Install
Assembly:  System.Configuration.Install (in System.Configuration.Install.dll)

public class InstallException : SystemException

The InstallException type exposes the following members.

Public methodInstallException()Initializes a new instance of the InstallException class.
Public methodInstallException(String)Initializes a new instance of the InstallException class, and specifies the message to display to the user.
Protected methodInstallException(SerializationInfo, StreamingContext)Infrastructure. Initializes a new instance of the InstallException class with serialized data.
Public methodInstallException(String, Exception)Initializes a new instance of the InstallException class, and specifies the message to display to the user, and a reference to the inner exception that is the cause of this exception.

Public propertyDataGets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
Public propertyHelpLinkGets or sets a link to the help file associated with this exception. (Inherited from Exception.)
Public propertyHResultGets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
Public propertyInnerExceptionGets the Exception instance that caused the current exception. (Inherited from Exception.)
Public propertyMessageGets a message that describes the current exception. (Inherited from Exception.)
Public propertySourceGets or sets the name of the application or the object that causes the error. (Inherited from Exception.)
Public propertyStackTraceGets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
Public propertyTargetSiteGets the method that throws the current exception. (Inherited from Exception.)

Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetBaseExceptionWhen overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetObjectDataWhen overridden in a derived class, sets the SerializationInfo with information about the exception. (Inherited from Exception.)
Public methodGetTypeGets the runtime type of the current instance. (Inherited from Exception.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringCreates and returns a string representation of the current exception. (Inherited from Exception.)

Protected eventSerializeObjectStateOccurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.)

The following example, plus the examples in the InstallException constructors, together make up an example showing an assembly having its own installer. The installer is named MyInstaller, which has an attribute RunInstallerAttribute, indicating that this installer will be invoked by Installutil.exe (Installer Tool). Installutil.exe (Installer Tool) calls the methods Commit, Rollback, Install and Uninstall. The code in Commit presumes that a file named FileDoesNotExist.txt exists before the installation of the assembly can be committed. If the file FileDoesNotExist.txt does not exist, Commit raises an InstallException. The same is the case with Uninstall in which an uninstallation will only happen if a file named FileDoesNotExist.txt exists. Otherwise it raises an InstallException. In Rollback, a code fragment is executed, which might raise an exception. If the exception is raised, it is caught and an InstallException is raised with that exception being passed to it.


Run this example with the help of Installutil.exe. Type this in the command prompt:

Installutil InstallException.exe


Installutil /u InstallException.exe

using System;
using System.ComponentModel;
using System.Collections;
using System.Configuration.Install;
using System.IO;

public class MyInstaller : Installer
   public override void Install(IDictionary 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)
      Console.WriteLine("Commit ...");
      // Throw an error if a particular file doesn't exist. 
         throw new InstallException();
      // Perform the final installation if the file exists.

   public override void Rollback(IDictionary savedState)
      Console.WriteLine("RollBack ...");
         // 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)
      Console.WriteLine("UnInstall ...");
      // Throw an error if a particular file doesn't exist. 
         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");

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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