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ASP.NET and C# (Introduction level) most important questions answers — helpful for interviews, exams, or basic understanding

Introduction to ASP.NET and C# most important questions answers helpful for interviews, exams or basic understanding in English @thestudyhouse8799 #important questions #trend video

Here’s a set of *important questions and answers* on *ASP.NET and C# (Introduction level)* — helpful for interviews, exams, or basic understanding.

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*Part 1: ASP.NET – Questions and Answers*

*Q1. What is ASP.NET?*
*Ans:* ASP.NET is a server-side web development framework developed by Microsoft to build dynamic web pages, applications, and services.

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*Q2. What are the main features of ASP.NET?*
*Ans:*
Server-side technology
Language independence
State management
Built-in security features
Rich toolbox in Visual Studio

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*Q3. What is the difference between ASP and ASP.NET?*
*Ans:*
ASP is interpreted; ASP.NET is compiled
ASP uses scripting like VBScript; ASP.NET supports full .NET languages like C#
ASP.NET has better security, performance, and scalability

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*Q4. What is a Web Form in ASP.NET?*
*Ans:* A Web Form is a file with `.aspx` extension used to design user interfaces for web applications.

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*Q5. What is ViewState?*
*Ans:* ViewState is a method to preserve page and control values between postbacks in ASP.NET web forms.

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*Q6. What is a PostBack in ASP.NET?*
*Ans:* PostBack is the process of submitting an ASP.NET page to the server for processing and then returning to the browser.

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*Q7. What are Server Controls in ASP.NET?*
*Ans:* These are controls like TextBox, Button, Label, etc., that run on the server and are used to design web pages.

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*Q8. What is the Global.asax file?*
*Ans:* It's used for application-level events like `Application_Start`, `Session_Start`, etc.

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*Part 2: C# – Questions and Answers*

*Q9. What is C#?*
*Ans:* C# is a modern, object-oriented programming language developed by Microsoft for .NET framework applications.

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*Q10. What are the features of C#?*
*Ans:*
Object-oriented
Automatic memory management
Type-safe language
Interoperable with other .NET languages
Rich library support

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*Q11. What is the difference between value type and reference type in C#?*
*Ans:*
Value types (int, float, bool) store data directly.
Reference types (class, array, string) store reference to the data's memory location.

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*Q12. What is a class in C#?*
*Ans:* A class is a blueprint for objects. It contains properties, methods, fields, etc.

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*Q13. What is an object in C#?*
*Ans:* An object is an instance of a class that holds actual values and data.

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*Q14. What is inheritance in C#?*
*Ans:* Inheritance is a mechanism where one class (child) can inherit fields and methods from another class (parent).

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*Q15. What is the difference between `==` and `.Equals()` in C#?*
*Ans:*
`==` checks for value or reference equality depending on the data type.
`.Equals()` checks for value equality and can be overridden for custom behavior.

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*Q16. What is the `static` keyword in C#?*
*Ans:* It defines members that belong to the class itself rather than a specific object instance.

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