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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.

ExceptionCondition
SecurityException

The user does not have read permission for the key.

ObjectDisposedException

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

UnauthorizedAccessException

The user does not have the necessary registry rights.

IOException

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())
{
    using(RegistryKey 
        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, 
                tempKey.GetValue(valueName).ToString());
        }
    }
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0

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