设置注册表项不起作用。 有时

Question

I'm trying to set a registry key in my C# code, but it doesn't work all the time. Sometimes it does work, sometimes it doesn't. I'm starting to get crazy... In previous projects I had no problems writing and reading to the registry, but I do now.

Here's the code I'm using:

string newVersion = "10A";
RegistryKey key = null;
try
{
    key = Registry.CurrentUser.CreateSubKey("Software\\stuff1\\stuff2 " + newVersion + "\\" + newVersion + "\\stuff3\\Settings", RegistryKeyPermissionCheck.ReadWriteSubTree);
    key.SetValue("CopyConvertDone", "1", RegistryValueKind.String);
    key.Flush();
    rep.Message("CopyConvertDone registry key set for revision: " + newVersion);
}
catch (Exception e)
{
    rep.Error(e);
}
finally
{
    if (key != null)
    {
        key.Close();
    }
    else
    {
        rep.Error("Registry key is set to null.");
    }
}

What I already tried but didn't work: - Instead of using CreateSubKey I tried OpenSubKey with the write-parameter set to true. - Added the .Flush() method. - Did a Thread.Pause(2000) to give it some time before progressing my program (which needs this registry key)

I don't get any error and the subkey already exists, but the value (CopyConvertDone) doesn't.

Can anyone see a problem in this code and has a possible solution?

Answer 1

该代码对我来说似乎还不错，但是，如果某些时候它可以正常工作，则可以使用Process Monitor查看正在对注册表进行哪些调用以及成功/失败的情况。

Answer 2

Had something similar happen to me just now, and using Process Monitor as suggested by Antony I discovered Windows 7 was redirecting my writes to a key under HKCU\\Software\\Classes\\VirtualStore\\MACHINE .

Just a pointer in case anybody else has this issue.

Answer 3

Looks correct. Maybe try to remove Flush. From MSDN: An application should only call Flush if it must be absolute certain that registry changes are recorded to disk. In general, Flush rarely, if ever, need be used. An application should only call Flush if it must be absolute certain that registry changes are recorded to disk. In general, Flush rarely, if ever, need be used.

Your already closing the RegistryKey in the finally statement.