Archive for the ‘Visual Developer’ Category
.NET platform does not support multiple inheritance. Do not confuse multilevel inheritance with multiple inheritance. With multiple inheritance we can have a subclass that inherits from two classes at the same time.
Let’s suppose we have an application that has a class Customers and another class Vendors. If you wanted to combine these two classes into one CustomerVendor class it would be a combination of Customers and Vendors just like the diagram below.
Please copy the following URL into your browser to view the diagram: [http://www.vbprofs.com/images/Article] Images/ThomasArt1.gif
In the above diagram we see how the CustomerVendor class inherits from both of those classes.
Multiple inheritance is complex and can be dangerous. The advantages of code re-usage prevail over complexity is up to your choice.
Multiple inheritance is not supported by VB.NET or .Net platform. Instead of multiple inheritance we can use multiple interfaces to achieve similar effect to multiple inheritance.
In VB.NET all objects have a primary or native interface, which is composed of properties, events, methods or member variables declared using Public keyword.
Objects can implement also secondary interfaces by using Implement keyword.
Sometimes it is helpful for an object to have more than one interface, allowing us to interact with the object in different ways. Inheritance allow us to create subclasses that are a specialized case of the base class.
Example
Sometimes we have a group of objects that are not the similar, but we want to handle them the same manner. We want all the objects to act as if they are the same, even though they are different.
We can have some different objects in an application, such as customer, product, invoice etc. Each object would have a default interface appropriate to each individual object, and each of them is a different class. No natural inheritance is implied between these classes.
Let’s suppose we want to print a document for each type of object. In this case we’d like to make them all act as printable object.
To accomplish this we can define a generic interface that would enable generating a printed document.
By implementing a common interface we are able to write a routine that accepts any object that implements a printed document.
To conclude, by implementing multiple interfaces in VB.NET , we can achieve a similar effect to that of multiple inheritance.
Visual Basic.Net which is shortly known as VB.Net is an Object Oriented programming language which could be examined as a progression of Microsoft’s Visual Basic implemented the Microsoft .NET framework. The .NET prologue was contentious as major modifications were made that ruined the backward compatibility in Visual Basic and it resulted a aperture inside the developer community. The most noticeable thing of Visual Basic.NET developers makes use of Visual Studio.NET as their IDE that is Integrated Development Environment.
Visual Basic.NET is the next invention of Visual Basic. It is designed to act as a simple, uncomplicated and major productive tool in order to generate a .NET application which comprises Web applications, Web Services and Windows application. Visual Basic.NET permits elective usage of latest language characteristics. There are quite a large number of predefined concepts that makes Visual Basic stronger and powerful, they are Inheritance, Exception Handling, Method Overloading and Threads. VB.NET completely incorporates with the .NET Framework and the CLR that is the Common Language Runtime, which mutually affords language interoperability, improved security, superior versioning support and easy operation.
With the help of the tool box available in VB.NET a person can drag the objects and make it place into the forms. As soon as placing the objects the developers can change the default property of each object controls and they can indicate the property and their behavior for every object controls. The objects will respond according to the property set up by the developer. There are quite a good number of features that are available in Visual Basic.NET and they are given here as follows.
The same object can be used frequently by use of the with keyword.
It has named indexers are properties that basically get arguments.
Imperative event wiring and is accessible in VB.NET and the Handle keyword lets declarative wiring of events to functions.
Visual Basic.NET electively overlooks the ByRef/Ref performance for passing arguments.
Optional parameter in VB.NET is valuable and helpful while making use of the COM automation.
Visual Basic.NET gives a good prop up to syntactic shortcuts. This is only because of the language bequest support. There are quite a number of tools and web controls that are not available in Visual Basic but which are present in Visual Basic.NET and the tools are panel, placeholder, calendar, validation controls, Xml etc., these are the controls additionally available in VB.NET.
Microsoft Dynamics GP has variety of modification tools: Dexterity, eConnect, SDK for Visual Studio Developer, then SQL stored procedures should be considers as advanced scripting option. In this small article we would like to give you introduction level highlights, assuming that you are in the MRP selection phase and your implementation requires customization, integration, programming, data conversion, and cross-platform reporting.
1. Great Plains Dexterity. This tool requires several years of extensive programming experience, and at the same time it allows you as software programmer to customize the most advanced scenarios of GP business logic. Dexterity is written in C programming language as EDI shell, in turn it has its own programming language sanscript. You typically rescue to Dex, when other tolls or SDK don’t do the job.
2. eConnect. It is in essence SDK with C# and VB sample codes, plus it has layers of technologies ending up at the database side with SQL encrypted stored procedures. eConnect was introduced as the tool for ecommerce web developer to integrate GP as back office accounting and Sales Order Processing system.
3. SQL Scripting. If you need relatively simple data integration without deploying expensive tools, consider SQL Insert statement based scripts and stored procedures. Alternatively you can incorporate these constructions into DTS or Data Transformation Services package. Please, be sure that you are familiar with GP tables structure and data flow, please install GP SDK from CD #2.
4. Cross Platform Integrations. If your legacy system database is not Microsoft SQL Server – something like Oracle, DBII, Progress, Sybase, Pervasive SQL, Ctree, you should consider making ODBC connection from MS SQL Server as preferred first option, as GP is MS SQL Server application.