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.NET/ASP.NET/C#/VB.NET PDF Document SDKWhen you wish to programmatically obtain the identity of the current user via the rolebased security model, you must obtain a principal object from the current thread of execution via Thread.CurrentPrincipal. Simply put, a principal object represents the identity of the current user and each role to which he belongs. Technically speaking, a principal object is some type implementing the System.Security.Principal.IPrincipal interface: public interface IPrincipal { IIdentity Identity { get; } bool IsInRole(string role); } As you can see, the read-only IPrincipal.Identity property returns an object implementing System.Security.Principal.IIdentity, which is defined as so: public interface IIdentity { string AuthenticationType { get; } bool IsAuthenticated { get; } string Name { get; } } Before obtaining a principal object via Thread.CurrentPrincipal, the calling assembly needs to inform the CLR of the principal policy it s interested in leveraging. As of .NET 2.0, there are four possible principal policies: Forms: A RBS implementation for ASP .NET. Generic: Enables you to define your own custom RBS system. Passport: A RBS implementation for MS .NET Passport. Windows: A RBS implementation for Win32 user account systems. As you ll see in just a bit, the Forms-based principal policy is used extensively when securing ASP .NET web applications. Until then, you ll assume a Windows-based principal policy that is fitting for known users on an internal NT network. Establishing a principal policy requires a call to SetPrincipalPolicy on the current application domain. These things being said, the following code illustrates how to obtain various statistics regarding the current caller via the members defined by the IPrincipal and IIdentiy interfaces: private DisplayUserInformation() { // Set the default principal policy for threads in this AppDomain. AppDomain myDomain = AppDomain.CurrentDomain; myDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal); // Get the current principal. WindowsPrincipal wp = (WindowsPrincipal)Thread.CurrentPrincipal; // Print out some stats. free barcode font excel mac, how to make 2d barcodes in excel, barcode in excel 2010 freeware, using barcode in excel 2010, microsoft excel 2013 barcode font, barcode generator excel 2003 free, microsoft excel 2010 barcode generator, barcode font excel free download, barcode font for excel 2016, free barcode generator microsoft excel,Transpose type Vector<'a> .[] 5 6 7 8 9 Gets or sets the item at the given position in the vector. Gets the number of rows in the vector. Gets a subvector. Gets the transpose of the vector. dbms_output.put_line( 'p3' ); pkg2.p2; end; end; / string wpInfo = string.Format("Name is: {0}", wp.Identity.Name); wpInfo += string.Format("\nIs authenticated : {0}", wp.Identity.IsAuthenticated); wpInfo += string.Format("\nAuth type: {0}", wp.Identity.AuthenticationType); wpInfo += string.Format("\nIs user a guest : {0}", wp.IsInRole(@"Developers")); MessageBox.Show(wpInfo, "Current Principal Info"); } The F# matrix, vector, and row vector types support the use of operators such as +, -, and *. Table 10-12 shows the set of operators supported. Package body created. The following query shows that all the packages are valid as expected: benchmark@ORA10G> select object_name, object_type, status 2 from all_objects 3 where object_name in( 'PKG1', 'PKG2', 'PKG3' ) 4 and owner = 'BENCHMARK'; OBJECT_NAME -----------------------------PKG1 PKG1 PKG2 PKG2 PKG3 PKG3 6 rows selected. Note that in the preceding query results, for each package there are two entries: one for the package specification (the value PACKAGE in the object_type column) and one for the package body (the value PACKAGE BODY in the object_type column). Let s now modify procedure p1 as before and recompile the package body of package pkg1: benchmark@ORA10G> create or replace package body pkg1 as 2 procedure p1 3 as 4 begin 5 dbms_output.put_line( 'p1 modified' ); 6 pkg1.p1; 7 end; 8 end; 9 / Package body created. Rerunning our query shows that none of the other packages are invalidated: benchmark@ORA10G> select object_name, object_type, status 2 from all_objects 3 where object_name in( 'PKG1', 'PKG2', 'PKG3' ) 4 and owner = 'BENCHMARK'; OBJECT_TYPE ------------------PACKAGE PACKAGE BODY PACKAGE PACKAGE BODY PACKAGE PACKAGE BODY STATUS ------VALID VALID VALID VALID VALID VALID
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