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RegistryKey.ValueCount Property

Retrieves the count of values in the key.

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

public int ValueCount { get; }

Property Value

Type: System.Int32
The number of name/value pairs in the 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.

Each registry key has a default value that is not associated with any name. This unnamed value can be set by using the SetValue method and specifying either null or the empty string ("") for name. If the default value has never been set, it does not contribute to the total count returned by the ValueCount property; once it has been set, however, it is always counted.

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());
        }
    }
}

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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