RegistryKey.SubKeyCount Property


Retrieves the count of subkeys of the current key.

 property int SubKeyCount { int get(); };
public int SubKeyCount { get; }
member this.SubKeyCount : int
Public ReadOnly Property SubKeyCount As Integer

Property Value

The number of subkeys of the current key.


The user does not have read permission for the key.

The RegistryKey being manipulated is closed (closed keys cannot be accessed).

The user does not have the necessary registry rights.

A system error occurred, for example the current key has been deleted.


This code example is part of a larger example provided for the RegistryKey class.

// Print the information from the Test9999 subkey.
Console::WriteLine( "There are {0} subkeys under Test9999.", test9999->SubKeyCount.ToString() );
array<String^>^subKeyNames = test9999->GetSubKeyNames();
for ( int i = 0; i < subKeyNames->Length; i++ )
   RegistryKey ^ tempKey = test9999->OpenSubKey( subKeyNames[ i ] );
   Console::WriteLine( "\nThere are {0} values for {1}.", tempKey->ValueCount.ToString(), tempKey->Name );
   array<String^>^valueNames = tempKey->GetValueNames();
   for ( int j = 0; j < valueNames->Length; j++ )
      Console::WriteLine( "{0,-8}: {1}", valueNames[ j ], tempKey->GetValue( valueNames[ j ] )->ToString() );

// Print the information from the Test9999 subkey.
Console.WriteLine("There are {0} subkeys under {1}.",
    test9999.SubKeyCount.ToString(), test9999.Name);
foreach(string subKeyName in test9999.GetSubKeyNames())
        tempKey = test9999.OpenSubKey(subKeyName))
        Console.WriteLine("\nThere are {0} values for {1}.",
            tempKey.ValueCount.ToString(), tempKey.Name);
        foreach(string valueName in tempKey.GetValueNames())
            Console.WriteLine("{0,-8}: {1}", valueName,
' Print the information from the Test9999 subkey.
Console.WriteLine("There are {0} subkeys under Test9999.", _
For Each subKeyName As String In test9999.GetSubKeyNames()
    Dim tempKey As RegistryKey = _
    Console.WriteLine(vbCrLf & "There are {0} values for " & _
        "{1}.", tempKey.ValueCount.ToString(), tempKey.Name)
    For Each valueName As String In tempKey.GetValueNames()
        Console.WriteLine("{0,-8}: {1}", valueName, _


This property does not recursively count names. It only returns the count of names on the base level from which it was called.

Applies to

See also