BStrWrapper Class

 

Marshals data of type VT_BSTR from managed to unmanaged code. This class cannot be inherited.

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

System.Object
  System.Runtime.InteropServices.BStrWrapper

[SerializableAttribute]
[ComVisibleAttribute(true)]
public sealed class BStrWrapper

NameDescription
System_CAPS_pubmethodBStrWrapper(Object)

Initializes a new instance of the BStrWrapper class with the specified Object object.

System_CAPS_pubmethodBStrWrapper(String)

Initializes a new instance of the BStrWrapper class with the specified String object.

NameDescription
System_CAPS_pubpropertyWrappedObject

Gets the wrapped String object to marshal as type VT_BSTR.

NameDescription
System_CAPS_pubmethodEquals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

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

System_CAPS_pubmethodToString()

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

The BStrWrapper class controls how the wrapped object is marshaled when passed as VARIANT. You can wrap a String object in a BStrWrapper object to marshal it as VT_BSTR. BStrWrapper is useful when passing a null string to unmanaged code. Without BStrWrapper, a null string is passed as VT_EMPTY; however, wrapping the string with BStrWrapper ensures that the null string is passed as VT_BSTR.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1

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

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