Inno Setup Dependency Installer can download and install any dependency such as .NET, Visual C++ or SQL Server during your application's installation. In addition, it is easy to add your own dependencies as well.

1. Download and install Inno Setup 6.2+.
2. Download this repository or clone it.
3. Open the extracted ExampleSetup.iss file.
4. Comment out dependency function calls inside InitializeSetup function to disable installing them:

   Dependency_AddVC2013; // installed in example setup
   //Dependency_AddVC2013; // commented out and not installed in example setup

5. Modify other sections like [Setup] [Files] [Icons] as necessary.
6. Build the setup using Inno Setup compiler.

You can also just include CodeDependencies.iss file into your setup and call the desired Dependency_Add functions (some may need defining their exe file path before the include):

#define public Dependency_Path_NetCoreCheck "dependencies\"

#include "CodeDependencies.iss"

[Setup]
; ...

[Code]
function InitializeSetup: Boolean;
begin
  // add the dependencies you need
  Dependency_AddDotNet70;
  // ...

  Result := True;
end;

You have two ways to distribute the dependency installers. By default, most dependencies will be downloaded from the official website. Another way is to pack the dependency into a single executable setup like so:

• Include the dependency setup file by defining the source:

  Source: "dxwebsetup.exe"; Flags: dontcopy noencryption

• Call ExtractTemporaryFile() before the corresponding Dependency_Add function

  ExtractTemporaryFile('dxwebsetup.exe');

The dependencies are installed based on the system architecture. If you want to install 32-bit dependencies on a 64-bit system you can force 32-bit mode like so:

Dependency_ForceX86 := True; // force 32-bit install of next dependencies
Dependency_AddVC2013;
Dependency_ForceX86 := False; // disable forced 32-bit install again

If you only deploy 32-bit binaries and dependencies you can also instead just not define ArchitecturesInstallIn64BitMode in [Setup].

• .NET
  • .NET Framework 3.5 Service Pack 1
  • .NET Framework 4.0
  • .NET Framework 4.5.2
  • .NET Framework 4.6.2
  • .NET Framework 4.7.2
  • .NET Framework 4.8.1
  • .NET Core 3.1 (Runtime, ASP.NET, Desktop)
  • .NET 5.0 (Runtime, ASP.NET, Desktop)
  • .NET 6.0 (Runtime, ASP.NET, Desktop)
  • .NET 7.0 (Runtime, ASP.NET, Desktop)
• C++
  • Visual C++ 2005 Service Pack 1 Redistributable
  • Visual C++ 2008 Service Pack 1 Redistributable
  • Visual C++ 2010 Service Pack 1 Redistributable
  • Visual C++ 2012 Update 4 Redistributable
  • Visual C++ 2013 Update 5 Redistributable
  • Visual C++ 2015-2022 Redistributable
• SQL
  • SQL Server 2008 R2 Service Pack 2 Express
  • SQL Server 2012 Service Pack 4 Express
  • SQL Server 2014 Service Pack 3 Express
  • SQL Server 2016 Service Pack 3 Express
  • SQL Server 2017 Express
  • SQL Server 2019 Express
  • SQL Server 2022 Express
• Access
  • Access Database Engine 2010
  • Access Database Engine 2016
• DirectX End-User Runtime
• WebView2 Runtime

Thanks to the community for sharing many fixes and improvements. To contribute please create a pull request.

The Code Project Open License (CPOL) 1.02