SiteIdentityPermission.Intersect Method (IPermission)

 
System_CAPS_noteNote

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Creates and returns a permission that is the intersection of the current permission and the specified permission.

Namespace:   System.Security.Permissions
Assembly:  mscorlib (in mscorlib.dll)

public override IPermission Intersect(
	IPermission target
)

Parameters

target
Type: System.Security.IPermission

A permission to intersect with the current permission. It must be of the same type as the current permission.

Return Value

Type: System.Security.IPermission

A new permission that represents the intersection of the current permission and the specified permission. This new permission is null if the intersection is empty.

Exception Condition
ArgumentException

The target parameter is not null and is not of the same type as the current permission.

The intersection of two permissions is a permission that describes the sites they both describe in common. Only a demand that passes both original permissions will pass the intersection. For example, the intersection of a permission that represents access to www.fourthcoffee.com and one that represents access to *.fourthcoffee.com is a permission that represents access to www.fourthcoffee.com.

The intersection of two identical site identity permissions is the same permission. The intersection of two different (not wildcard) expressions is an empty permission. The intersection of a wildcard expression and a matching site is the site. The intersection of two wildcard expressions that match is the longer, more specific of the two expressions.

.NET Framework
Available since 1.1
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