Ermitteln der installierten .NET RuntimeOktober 2013
Im Beispiel unten wird in IsRequiredDotNetDetected() auf Version 2 oder Version 4 getestet.
// from http://www.kynosarges.org/DotNetVersion.html
// Indicates whether the specified version and service pack of the .NET Framework is installed.
//
// version -- Specify one of these strings for the required .NET Framework version:
// 'v1.1.4322' .NET Framework 1.1
// 'v2.0.50727' .NET Framework 2.0
// 'v3.0' .NET Framework 3.0
// 'v3.5' .NET Framework 3.5
// 'v4\Client' .NET Framework 4.0 Client Profile
// 'v4\Full' .NET Framework 4.0 Full Installation
// 'v4.5' .NET Framework 4.5
//
// service -- Specify any non-negative integer for the required service pack level:
// 0 No service packs required
// 1, 2, etc. Service pack 1, 2, etc. required
function IsDotNetDetected(version: string; service: cardinal): boolean;
var
key: string;
install, release, serviceCount: cardinal;
check45, success: boolean;
var reqNetVer : string;
begin
// .NET 4.5 installs as update to .NET 4.0 Full
if version = 'v4.5' then begin
version := 'v4\Full';
check45 := true;
end else
check45 := false;
// installation key group for all .NET versions
key := 'SOFTWARE\Microsoft\NET Framework Setup\NDP\' + version;
// .NET 3.0 uses value InstallSuccess in subkey Setup
if Pos('v3.0', version) = 1 then begin
success := RegQueryDWordValue(HKLM, key + '\Setup', 'InstallSuccess', install);
end else begin
success := RegQueryDWordValue(HKLM, key, 'Install', install);
end;
// .NET 4.0/4.5 uses value Servicing instead of SP
if Pos('v4', version) = 1 then begin
success := success and RegQueryDWordValue(HKLM, key, 'Servicing', serviceCount);
end else begin
success := success and RegQueryDWordValue(HKLM, key, 'SP', serviceCount);
end;
// .NET 4.5 uses additional value Release
if check45 then begin
success := success and RegQueryDWordValue(HKLM, key, 'Release', release);
success := success and (release >= 378389);
end;
result := success and (install = 1) and (serviceCount >= service);
end;
function IsRequiredDotNetDetected(): Boolean;
begin
result := IsDotNetDetected('v4\Full', 0) or IsDotNetDetected('v2.0.50727', 0);
end;