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RegistryKey.SubKeyCount Property


Retrieves the count of subkeys of the current key.

Namespace:   Microsoft.Win32
Assembly:  mscorlib (in mscorlib.dll)

public int SubKeyCount { get; }

Property Value

Type: System.Int32

The number of subkeys of the current key.

Exception Condition

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

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 {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, 


for the ability to read the specified registry key. Associated enumeration: RegistryPermissionAccess.Read

.NET Framework
Available since 1.1
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