private static InstalledProgram getInstalledProgramFromKey(RegistryKey key)
{
InstalledProgram program = new InstalledProgram();
program.DisplayName = key.GetValue("DisplayName") as string;
program.DisplayVersion = key.GetValue("DisplayVersion") as string;
program.EstimatedSize = key.GetValue("EstimatedSize", null) as int?;
string installDateString = key.GetValue("InstallDate") as string;
DateTime?installDate = null;
if (installDateString != null)
{
DateTime dt;
if (DateTime.TryParseExact(installDateString, "yyyyMMdd", CultureInfo.InvariantCulture, DateTimeStyles.AssumeLocal, out dt))
{
installDate = dt;
}
}
program.Language = key.GetValue("Language") as int?;
program.Publisher = key.GetValue("Publisher") as string;
int?systemComponentUint = key.GetValue("SystemComponent", 0) as int?;
program.SystemComponent = systemComponentUint == null || systemComponentUint == 0 ? false : true;
return(program);
}
private static List <InstalledProgram> getInstalledProgramsFromKey(string keyName)
{
List <InstalledProgram> programs = new List <InstalledProgram>();
using (RegistryKey key = Registry.LocalMachine.OpenSubKey(keyName))
{
foreach (string subkeyName in key.GetSubKeyNames())
{
using (RegistryKey subkey = key.OpenSubKey(subkeyName))
{
InstalledProgram program = getInstalledProgramFromKey(subkey);
programs.Add(program);
}
}
}
return(programs);
}
/// <summary>
/// Prints the program to string builder.
/// </summary>
/// <param name="sb">The string builder.</param>
/// <param name="program">The program.</param>
/// <returns>Returns true if function appended anything to string builder</returns>
private static bool printProgramToStringBuilder(StringBuilder sb, InstalledProgram program)
{
if (program.DisplayName == null && program.DisplayVersion == null)
{
return(false);
}
sb.AppendLine($"\t\t{program.DisplayName} {program.DisplayVersion}");
if (program.InstallDate != null || program.EstimatedSize != null)
{
sb.Append("\t\t");
if (program.InstallDate != null)
{
sb.Append($"Installed on {program.InstallDate?.ToShortDateString()}");
}
if (program.EstimatedSize != null)
{
if (program.InstallDate != null)
{
sb.Append(", ");
}
sb.Append($" Est. Size: {program.EstimatedSize}KB");
}
sb.AppendLine();
}
if (program.Publisher != null)
{
sb.AppendLine($"\t\tPublisher: {program.Publisher}");
}
return(true);
}
