vb net 2d barcode generator Part IV in .NET

Creator Denso QR Bar Code in .NET Part IV

Part IV
QR Code JIS X 0510 Generator In VS .NET
Using Barcode creation for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
www.OnBarcode.com
Bar Code Encoder In Visual Studio .NET
Using Barcode maker for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
Core Facilities
QR Code 2d Barcode Creator In C#
Using Barcode creation for VS .NET Control to generate, create QR-Code image in Visual Studio .NET applications.
www.OnBarcode.com
QR Code JIS X 0510 Encoder In VS .NET
Using Barcode creator for VS .NET Control to generate, create QR image in .NET applications.
www.OnBarcode.com
for (Int32 m = 0; m < map.InterfaceMethods.Length; m++) { // Display the interface method name and which // type method implements the interface method. Console.WriteLine(" {0} is implemented by {1}", map.InterfaceMethods[m], map.TargetMethods[m]); } }
Denso QR Bar Code Generator In VB.NET
Using Barcode creator for .NET framework Control to generate, create QR Code image in .NET applications.
www.OnBarcode.com
Code 128A Creation In VS .NET
Using Barcode generation for ASP.NET Control to generate, create Code 128B image in ASP.NET applications.
www.OnBarcode.com
// Returns true if type matches filter criteria private static Boolean TypeFilter(Type t, Object filterCriteria) { // Return true if the interface is defined in assembly identified by filterCriteria return t.Assembly == filterCriteria; } }
Code 3 Of 9 Generation In Visual Studio .NET
Using Barcode encoder for ASP.NET Control to generate, create Code-39 image in ASP.NET applications.
www.OnBarcode.com
Barcode Printer In .NET Framework
Using Barcode drawer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
www.OnBarcode.com
When you build and run the code above, you get the following output:
Drawing Barcode In .NET Framework
Using Barcode generator for ASP.NET Control to generate, create barcode image in ASP.NET applications.
www.OnBarcode.com
Generate GTIN - 128 In Visual Studio .NET
Using Barcode creator for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
www.OnBarcode.com
MyRetailer implements the following interfaces (defined in this assembly): Interface: IBookRetailer Void Purchase() is implemented by Void IBookRetailer.Purchase() Void ApplyDiscount() is implemented by Void ApplyDiscount() Interface: IMusicRetailer Void Purchase() is implemented by Void IMusicRetailer.Purchase()
Linear 1D Barcode Generation In VS .NET
Using Barcode encoder for ASP.NET Control to generate, create Linear Barcode image in ASP.NET applications.
www.OnBarcode.com
USPS OneCode Solution Barcode Creation In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create Intelligent Mail image in ASP.NET applications.
www.OnBarcode.com
Note that the IDisposable interface does not appear in the output because this interface is not declared in the EXE file s assembly .
UPC Symbol Creation In .NET
Using Barcode generator for VS .NET Control to generate, create GS1 - 12 image in VS .NET applications.
www.OnBarcode.com
Generate QR Code ISO/IEC18004 In None
Using Barcode encoder for Office Word Control to generate, create QR Code image in Word applications.
www.OnBarcode.com
Invoking a Type s Members
UPC - 13 Creation In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create EAN13 image in Visual Studio .NET applications.
www.OnBarcode.com
Encode Barcode In Objective-C
Using Barcode printer for iPhone Control to generate, create barcode image in iPhone applications.
www.OnBarcode.com
Now that you know how to discover the members defined by a type, you may want to invoke one of these members . What invoke means depends on the kind of member being invoked . Invoking a FieldInfo lets you get or set a field s value, invoking a ConstructorInfo lets you create an instance of the type passing arguments to a constructor, invoking a MethodInfo lets you call a method passing arguments and obtaining its return value, invoking a PropertyInfo lets you call the property s get or set accessor method, and invoking an EventInfo lets you add or remove an event handler . Let s discuss how to invoke a method first because this is the most complex member you can invoke . Then we ll discuss how to invoke the other members . The Type class offers an InvokeMember method that lets you invoke a member . There are several overloaded versions of InvokeMember . I ll discuss one of the more common overloads; the other overloads work similarly .
UPC - 13 Creator In Objective-C
Using Barcode creator for iPad Control to generate, create UPC - 13 image in iPad applications.
www.OnBarcode.com
Universal Product Code Version A Drawer In Java
Using Barcode maker for Java Control to generate, create UPC Code image in Java applications.
www.OnBarcode.com
23 Assembly Loading and Reflection
Drawing Code39 In Objective-C
Using Barcode creator for iPhone Control to generate, create Code-39 image in iPhone applications.
www.OnBarcode.com
Data Matrix 2d Barcode Generation In Java
Using Barcode generator for BIRT Control to generate, create Data Matrix image in BIRT reports applications.
www.OnBarcode.com
public abstract class Type : MemberInfo, ... { public Object InvokeMember( String name, // Name of member BindingFlags invokeAttr, // How to look up members Binder binder, // How to match members and arguments Object target, // Object to invoke member on Object[] args, // Arguments to pass to method CultureInfo culture); // Culture used by some binders ... }
When you call InvokeMember, it searches the type s members for a match . If no match is found, a System.MissingMethodException, System.MissingFieldException, or System.MissingMemberException exception is thrown . If a match is found, InvokeMember invokes the member . If the member returns something, InvokeMember returns it to you . If the member doesn t return anything, InvokeMember returns null . If the member you call throws an exception, InvokeMember catches the exception and throws a new System.Reflection. TargetInvocationException . The TargetInvocationException object s InnerException property will contain the actual exception that the invoked method threw . Personally, I don t like this behavior . I d prefer it if InvokeMember didn t wrap the exception and just allowed it to come through . Internally, InvokeMember performs two operations . First, it must select the appropriate member to be called this is known as binding . Second, it must actually invoke the member this is known as invoking . When you call InvokeMember, you pass a string as the name parameter, indicating the name of the member you want InvokeMember to bind to . However, the type might offer several members with the same name . After all, there might be several overloaded versions of a method, or a method and a field might have the same name . Of course, InvokeMember must bind to a single member before it can invoke it . All of the parameters passed to InvokeMember (except for the target parameter) are used to help InvokeMember decide which member to bind to . Let s take a closer look at these parameters . The binder parameter identifies an object whose type is derived from the abstract System.Reflection.Binder type . A Binder-derived type is a type that encapsulates the rules for how InvokeMember should select a single member . The Binder base type defines abstract virtual methods such as BindToField, BindToMethod, ChangeType, ReorderArgumentArray, SelectMethod, and SelectProperty . Internally, InvokeMember calls these methods by using the Binder object passed via InvokeMember s binder parameter . Microsoft has defined an internal (undocumented) concrete type, called System. DefaultBinder, which is derived from Binder . This DefaultBinder type ships with the FCL, and Microsoft expects that almost everyone will use this binder . Some compiler vendors will define their own Binder-derived type and ship it in a runtime library used by code emitted by their compiler .1 When you pass null to InvokeMember s binder parameter, it will use a
The code that accompanies this book includes the source code for a SimpleBinder class that demonstrates how to define your own Binder-derived type .
Copyright © OnBarcode.com . All rights reserved.