Basics Of Attributes in .Net Framework

The Attributes are the declarative informations used to instruct the .Net Runtime. The attributes can work with types, fields, methods and properties. These informations are stored with the metadata file. By using the Attributes the developer can control the CLR. So we will get a dynamic behaviour from the CLR.

Eg:- Serializable is an Attribute.

Usage of Attributes in VB.Net(Sample):

<Serializable()> _
  Public Class Employee
       Public Name As String
       Public Designation As String
  End Class

Usage of Attributes in C#.Net(Sample):

[Serializable()]
public class Employee
{
 public string Name;
 public string Designation;
}

Note: All the attributes are classes that derived from System.Attribute class.


.Net framework has a lot of attributes that can be used for controlling XML serialization, Web services, COM interoperability etc.. And .Net provides the oppertunity to create custom attributes.

Different Methods to Load Assembly Dynamically in .Net

1. Assembly.LoadFrom : Loads an assembly given its file name or path. Loads the assembly from the specified path, this will not search for the assembly in other directories. If an assembly with the same identity is already loaded, LoadFrom returns the loaded assembly even if a different path was specified.


2. Assembly.LoadFile : Loads the contents of an assembly file on the specified path.


3. Assembly.ReflectionOnlyLoad :


4. Assembly.Load : This method takes the name of the assembly, and the runtime searches for the assembly in different locations. These locations include local directory and global assembly cache.


5. Assembly.LoadWithPartialName :

This is an incomplete article. I will be back with more details.

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