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Regex.CacheSize Property

Gets or sets the maximum number of entries in the current static cache of compiled regular expressions.

Namespace:  System.Text.RegularExpressions
Assembly:  System (in System.dll)

public static int CacheSize { get; set; }

Property Value

Type: System.Int32
The maximum number of entries in the static cache.

ExceptionCondition
ArgumentOutOfRangeException

The value in a set operation is less than zero.

The Regex class maintains an internal cache of compiled regular expressions used in static method calls. If the value specified in a set operation is less than the current cache size, cache entries are discarded until the cache size is equal to the specified value.

By default, the cache holds 15 compiled static regular expressions. Your application typically will not have to modify the size of the cache. Use the CacheSize property only when you want to turn off caching or when you have an unusually large cache.

Notes to Callers

In the .NET Framework prior to the .NET Framework 2.0 SP1, regular expressions used in both static and instance method calls were cached. Beginning with the .NET Framework 2.0 SP1, only regular expressions used in static method calls are cached.

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, 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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