Определение установленных версий .NET Framework в системе
Определение установленных версий .NET Framework в системе. Пример на Delphi.
| /// <summary> /// Enumerates all installed Common Language Runtime Engines. /// </summary> /// <param name="Index">Zero-based index of looked runtime record.</param> /// <returns>True if runtime with specified index found.</returns> function EnumInstalledRuntimes(Index: Integer; out VersionName: String): Boolean; var hkey: Windows.HKEY; hsubkey: Windows.HKEY; I: Cardinal; J: Cardinal; NameBuf: array[0..MAX_PATH] of Char; CNameBuf: Cardinal; lwt: TFileTime; vt: DWORD; AnyFound: Boolean; begin Result := False; VersionName := ''; if ERROR_SUCCESS = RegOpenKeyEx(HKEY_LOCAL_MACHINE, PChar('SOFTWARE\Microsoft\.NETFramework\policy'), 0, KEY_ENUMERATE_SUB_KEYS, hkey) then try I := 0; while True do begin AnyFound := False; CNameBuf := MAX_PATH + 1; if ERROR_SUCCESS <> RegEnumKeyEx(hkey, I, @NameBuf[0], CNameBuf,nil, nil, nil, @lwt) then begin Break; end; if (NameBuf[0] = 'v') and (NameBuf[1] in ['1'..'9']) then begin VersionName := String(NameBuf); if ERROR_SUCCESS = RegOpenKeyEx(hkey, @NameBuf[0], 0,KEY_QUERY_VALUE, hsubkey) then try J := 0; while true do begin CNameBuf := MAX_PATH + 1; if ERROR_SUCCESS <> RegEnumValue(hsubkey, J, @NameBuf[0],CNameBuf, nil, @vt, nil, nil) then begin Break; end; if (vt = REG_SZ) and (NameBuf[0] <> #0) then begin VersionName := VersionName + '.' + String(NameBuf); AnyFound := True; Break; end; Inc(J); end; finally RegCloseKey(hsubkey); end; end; Inc(I); if AnyFound then begin if Index = 0 then begin Result := True; Break; end; Dec(Index); end; end; finally RegCloseKey(hkey); end; end; |
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