CODEWITHSUNDEEP
c#registry
Kasper Hansen
Kasper Hansen

Reputation: 6557

How do I read a value from registry?

I want to read the port number for remote desktops, but it doesn't work.

MSDN states that it is at

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber

which is a key that exists in my registry on Windows 8.

private void Form1_Load(object sender, EventArgs e)
{
   txtPort.Text = (string) Registry.GetValue(@"HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp", "PortNumber", "");
}

The string returned is null.

Correct answer:

private void Form1_Load(object sender, EventArgs e)
{
   txtPort.Text = Registry.GetValue(@"HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp\", "PortNumber", -1).ToString();
}

Upvotes: 1

Views: 278

Answers (1)

dtb
dtb

Reputation: 217371

There's a space in "Terminal Server":

@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp"
                                                              ↑

Upvotes: 7

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