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VB.NET:An introduction to Namespaces in .NET framework

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Richa Handa

VB.NET namespaces organize code by grouping related type names and reducing name collisions. Namespaces are commonly used to specify which .NET framework libraries are needed for a program. Code can be organized into hierarchies with namespaces nested within other namespaces. For example, the Button class is contained within the System.Windows.Forms namespace, which is part of the larger System namespace that contains many commonly used namespaces like System.IO and System.Collections.

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Presented By: Ms Richa Handa
? The most common way that VB.NET namespaces are used by most programmers is to tell the compiler which .NET Framework libraries are needed for a particular program. ? .NET codes can be organized using namespaces. ? Namespaces organize the objects defined in an assembly. ? Namespaces are not replacements for assemblies, but a second organizational method that complete assemblies. ? Namespaces are a way of grouping type names and reduce the chance of name collisions.
For example a button type is contained in system.windows.forms namespace. This is actually shorthand for the situation shown in figure below: Button class Form Namespace Window Namespace System Namespace
? System is the basic namespace used by every .NET code. There are lots of namespace user the system namespace. For example, ? System.IO, ? System.Net, ? System.Collections, ? System.Threading, ? System.Data, ? Ststem.Drawing, etc.
? VB.NET Code: Namespace College Namespace students Imports System Class Addstudents Public Function S_Method() Console.WriteLine("Adding Students to college using S_Method!") End Function End Class End Namespace End Namespace
Let's look how we can use the namespaces in our code. I'm going to create a program to use the namespaces. VB.NET Code: Imports System Class HelloWorld Public Sub Main() Dim AddStd As Student.AddStudent= New AddStudent AddStd.S_Method() End Sub End Class
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VB.NET:An introduction to Namespaces in .NET framework

  • 2. ? The most common way that VB.NET namespaces are used by most programmers is to tell the compiler which .NET Framework libraries are needed for a particular program. ? .NET codes can be organized using namespaces. ? Namespaces organize the objects defined in an assembly. ? Namespaces are not replacements for assemblies, but a second organizational method that complete assemblies. ? Namespaces are a way of grouping type names and reduce the chance of name collisions.
  • 3. For example a button type is contained in system.windows.forms namespace. This is actually shorthand for the situation shown in figure below: Button class Form Namespace Window Namespace System Namespace
  • 4. ? System is the basic namespace used by every .NET code. There are lots of namespace user the system namespace. For example, ? System.IO, ? System.Net, ? System.Collections, ? System.Threading, ? System.Data, ? Ststem.Drawing, etc.
  • 5. ? VB.NET Code: Namespace College Namespace students Imports System Class Addstudents Public Function S_Method() Console.WriteLine("Adding Students to college using S_Method!") End Function End Class End Namespace End Namespace
  • 6. Let's look how we can use the namespaces in our code. I'm going to create a program to use the namespaces. VB.NET Code: Imports System Class HelloWorld Public Sub Main() Dim AddStd As Student.AddStudent= New AddStudent AddStd.S_Method() End Sub End Class