Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

StringFreezingAttribute Class

 

Deprecated. Freezes a string literal when creating native images using the Ngen.exe (Native Image Generator). This class cannot be inherited.

Namespace:   System.Runtime.CompilerServices
Assembly:  mscorlib (in mscorlib.dll)

System.Object
  System.Attribute
    System.Runtime.CompilerServices.StringFreezingAttribute

[SerializableAttribute]
[AttributeUsageAttribute(AttributeTargets.Assembly, Inherited = false)]
public sealed class StringFreezingAttribute : Attribute

NameDescription
System_CAPS_pubmethodStringFreezingAttribute()

Initializes a new instance of the StringFreezingAttribute class.

NameDescription
System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethodEquals(Object)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

System_CAPS_noteNote

The StringFreezingAttribute class has been deprecated in the .NET Framework version 3.5 Service Pack 1 (SP1) and later versions.

A frozen string is a string literal object that is compatible with the managed heap and has been serialized into a native image by the Ngen.exe (Native Image Generator). The StringFreezingAttribute attribute allows you to optimize your code by pre-allocating string literals during native image generation rather than at run time. After a string literal has been frozen, code can simply refer to the string using the address in the native image.

The StringFreezingAttribute must be applied on the assembly level.

Note that the common language runtime (CLR) cannot unload any native image that has a frozen string because any object in the heap might refer to the frozen string. Therefore, you should use the StringFreezingAttribute class only in cases where the native image that contains the frozen string is shared heavily.

The following code example demonstrates how to apply the StringFreezingAttribute to an assembly.

using System;
using System.Runtime.CompilerServices;

[assembly :StringFreezingAttribute()]

class Program
{

    string frozenString = "This is a frozen string after Ngen is run.";

    static void Main(string[] args)
    {

        Console.WriteLine("The StringFreezingAttribute attribute was applied.");

    }
}

.NET Framework
Available since 2.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top
Show:
© 2016 Microsoft