Public Function DoesUserHavePermissions ( _
    acl As SPReusableAcl, _
    permissionMask As SPBasePermissions, _
    web As SPWeb _
) As Boolean

Dim instance As SPSite
Dim acl As SPReusableAcl
Dim permissionMask As SPBasePermissions
Dim web As SPWeb
Dim returnValue As Boolean

returnValue = instance.DoesUserHavePermissions(acl, permissionMask, web)

public bool DoesUserHavePermissions (
    SPReusableAcl acl,
    SPBasePermissions permissionMask,
    SPWeb web
)