Access Modifiers (Access Specifiers) describes as the scope of accessibility of an Object and its members. All C# types and type members have an accessibility level . We can control the scope of the member object of a class using access specifiers. We are using access modifiers for providing security of our applications. When we specify the accessibility of a type or member we have to declare it by using any of the access modifiers provided by CSharp language.
C# provide five access specifiers , they are as follows :
public is the most common access specifier in C# . It can be access from anywhere, that means there is no restriction on accessibility. The scope of the accessibility is inside class as well as outside. The type or member can be accessed by any other code in the same assembly or another assembly that references it.
The scope of the accessibility is limited only inside the classes or struct in which they are declared. The private members cannot be accessed outside the class and it is the least permissive access level.
The scope of accessibility is limited within the class or struct and the class derived (Inherited )from this class.
The internal access modifiers can access within the program that contain its declarations and also access within the same assembly level but not from another assembly.
protected internal :
Protected internal is the same access levels of both protected and internal. It can access anywhere in the same assembly and in the same class also the classes inherited from the same class .
In this article, i am going to show you that how to read excel file in C# and exporting it into ASP.Net. You might need this type of code when you want to read the file from server and export to the client.
Following will be the application look like :
For the beginners, working on thread might come across the error saying “Cross-thread operation not valid“. This type error comes normally when Windows control created in one thread and accessed in another.
Because the Windows control are not thread safe by default.
Microsoft Message Queue (MSMQ): MSMQ is a messaging protocol that allows applications running on separate servers/processes to communicate in a failsafe manner. A queue is a temporary storage location from which messages can be sent and received reliably, as and when conditions permit. Queues are used to receive and send the Messages.
To Install MSMQ, Go to Control Panel -> Add Remove Program -> Add Windows Component and select “Message Queuing”
In computing, Open Database Connectivity (ODBC) provides a standard software interface for accessing database management systems (DBMS). The designers of ODBC aimed to make it independent of programming languages, database systems, and operating systems. Thus, any application can use ODBC to query data from a database, regardless of the platform it is on or DBMS it uses.