Detecting .NET8 with Inno Setup and InnoDependenciyInstaller

I am looking at using InnoDependencyInstaller and it has a function that it uses under the hood:


Dependency_AddDotNet80
procedure Dependency_AddDotNet80;
begin

To detect .NET 8 using Inno Setup, you can use a combination of registry checks and custom code execution. Here's a basic example of how you can achieve this:

1. **Registry Check**: Check the registry to see if .NET 8 is installed. .NET 8 would be installed under a registry key specific to its version.

2. **Custom Code Execution**: If the registry check indicates .NET 8 is not installed, you can prompt the user to install it. You can execute custom code to check for the presence of .NET 8 assemblies or use InnoDependencyInstaller to install .NET 8 automatically.

Below is a sample script demonstrating how you can accomplish this:

```pascal

[Setup]

AppName=MyApp

AppVersion=1.0

DefaultDirName={pf}\MyApp

[Code]

function IsDotNet8Installed: Boolean;

var

  regKey: string;

begin

  // Check the registry to see if .NET 8 is installed

  regKey := 'Software\Microsoft\NET Framework Setup\NDP\v8\Full';

  Result := RegKeyExists(HKLM, regKey) or RegKeyExists(HKCU, regKey);

end;

procedure InstallDotNet8;

begin

  // Custom code to install .NET 8 or use InnoDependencyInstaller

  // Example:

  // ShellExec('open', 'https://dotnet.microsoft.com/download/dotnet/8.0', '', '', SW_SHOWNORMAL, ewNoWait, ErrorCode);

end;

function InitializeSetup: Boolean;

begin

  // Check if .NET 8 is installed

  if not IsDotNet8Installed then

  begin

    // Prompt the user to install .NET 8

    if MsgBox('This application requires .NET 8. Would you like to install it now?', mbConfirmation, MB_YESNO) = IDYES then

    begin

      InstallDotNet8;

      Result := False; // Abort setup

      Exit;

    end

    else

    begin

      // .NET 8 not installed and user declined installation

      MsgBox('.NET 8 is required to install this application. Setup will now exit.', mbError, MB_OK);

      Result := False; // Abort setup

      Exit;

    end;

  end;

  // .NET 8 is installed, continue setup

  Result := True;

end;

```

In this script:

- `IsDotNet8Installed` function checks the registry to see if .NET 8 is installed.

- `InstallDotNet8` procedure executes custom code to install .NET 8 or launches a browser to download it.

- `InitializeSetup` function is called before the setup begins. It checks if .NET 8 is installed. If not, it prompts the user to install it.

You may need to adjust the registry key path based on the specific registry location where .NET 8 is installed on your system. Additionally, replace the `InstallDotNet8` procedure with the appropriate code to install .NET 8 or utilize InnoDependencyInstaller to handle the installation automatically.