public static string ReadRegKey(RegistryHive hive, string keyPath, string valueName)
{
if (!Is32BitProcessOn64BitProcessor())
{
return Registry.GetValue(Path.Combine(hive.GetNameX(), keyPath), valueName, null) as string;
}
UIntPtr hKey = UIntPtr.Zero;
int openKeyErrorCode = 0;
try
{
UIntPtr rootKeyPtr = hive.AsUIntPtrX();
openKeyErrorCode = RegOpenKeyEx(rootKeyPtr, keyPath, 0,
(int) (KeyAccess.KEY_READ | KeyAccess.KEY_WOW64_64KEY), out hKey);
if (openKeyErrorCode != 0)
{
return null;
}
uint size = 1024;
uint type;
var keyBuffer = new StringBuilder((int)size);
try
{
int regQueryValueErrorCode = RegQueryValueEx(hKey, valueName, 0, out type, keyBuffer, ref size);
return regQueryValueErrorCode != 0 ? null : keyBuffer.ToString();
}
catch (Exception e)
{
return null;
}
}
finally
{
if (openKeyErrorCode == 0)
{
RegCloseKey(hKey);
}
}
}