The document contains a collection of technical interview questions across various topics in .NET development such as C#, ASP.NET, SQL Server, JavaScript/jQuery, WCF and design patterns. Many common questions are asked about OOP concepts, projects experience, tools/technologies used, differences between concepts like abstract class vs interface, stored procedures, caching techniques and more. Preparing answers to these types of core .NET skills and common questions could help candidates in software job interviews.

1. 1. Tell about your technical profile.
2. What was your role in your project?
3. In which module you have worked explain?
4. Describe GridView events (Paper).
5. How to change Label's color based on Label's value (Paper)?
6. Write the code to perform edit and delete operations using GridView (Paper).
7. What are the Validation controls in ASP.Net?
8. How you will implement Custom Validator Control functionality (Paper)?
9. What are Generics?
10. What is the difference between HashTable and Dictionary?
11. What is Ajax and Jquery?
12. Which control have you used in AJAX?
13. What is the use of ModalPopUpExtender (Paper)?
14. WCF Basics (Types of binding)
15. What are Database Constraints?
16. Difference between Primary and Unique key?
17. Difference between Function and Procedure?
18. Can we store DataSet in View State?
19. When we will store DataSet in Session then which memory will be filled client side or
server side?
20. Difference between reference and out parameter?
21. How to execute stored procedure?
1. What is View State?
2. Where is View State is saved and how View State value is retained between Post Back.
(Practical)?
3. Form Authentication Process (Using Web.Config file and Database in paper).
4. If View State value is "X" and I have changed it to "Y" in Page_Load then what will be the
final value of View State?
5. Page Life cycle with use.
6. Performance Analyzer tool.
7. How to declare unique key?
8. Diff. between Equi join and Right outer join (Paper)?
9. Define Caching types.
10. How to implement SQL Cache (Paper)?
11. How to call Web service using AJAX (Paper)?
12. How to change Color of Label using Jquery (Paper)?
13. What is Table Object/Variable?
14. How to call stored procedure using Entity Framework?
15. What is the difference between Overloading and Overriding?

2. 16. What is the difference between ExecuteScalar() and ExecuteNonQuery()?
17. What if I will pass Select * in ExecuteScalar()?
1. Tell me about projects.
2. Your role in project.
3. Which performance tool you have used?
4. Define abstract class and interface?
5. Why to use static members?
6. What is partial class and advantages?
7. GridView and DataList differences.
8. State Management type.
9. What is view state and use?
10. Caching techniques.
11. WCF and Web service differences.
12. Define WCF contracts.
13. Define design pattern.
14. What is facade pattern?
15. Triggers use and types.
16. Define cursor.
17. Difference between clustered and non-clustered index.
18. How many clustered index can be declared for a table.
19. What is view?
20. What is AJAX and Update-panel?
21. If you have 2 Update-panel then how to update one update panel from second?
1. Define your Technical skills.
2. Your Role in project.
3. Define features of OOPS.
4. How you will replace the functionality of parent class function in child class.(Paper)
5. Difference between Interface and abstract class (Use).
6. Functions of CLR.
7. Where you will use Cookie, Session and View State.
8. What are InProc and OutProc Session?
9. If you will save session in OutProc then where it will be saved and when it will be expired.
10. Difference between Web service and WCF
11. Design pattern.
12. Write sequence of select query-
13. What is ROW_NUMBER () in SQL Server?
14. Difference between Union and Join.

3. 15. Return value for ExecuteNonQuery().
16. Can we execute DML command in ExecuteScalar()?
17. Difference between DataSet and DataReader.
18. If provider is given OracleClient then can we connect with SQL Server?
19. Where you have used JQuery in your project?
20. Namespace for web-part (SharePoint) - System.Web.UI.WebControls.WebParts Namespace
21. For creating a site what are the main concepts you need to consider in UL layer, middle-ware
and Database Layer.
1. Explain different versions of .Net Framework.
2. What is OPPS and explain concept of OPPs?
3. What is static members and where you have used static members in your project?
4. What is difference between Constant and ReadOnly?
5. Explain different Access Specifier.
6. What is Entity Framework? Explain difference between LINQ and Entity Framework.
7. Explain Page life cycle.
8. Explain Membership provider.
9. What is WCF?
10. Explain different types of WCF Binding and where you will use which binding?
11. Explain Index in SQL Server. Have you created any index for your project?
12. What is difference between Primary key and Unique key?
13. What is Stored procedure and it's advantages?
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1. What is difference between ArrayList and HastTable?
2. Where we have to use static members?
3. What is constants?
4. What is difference between Interface and Abstract class?
5. How you will handle error in C#?
6. What is the use of Virtual?
7. What is App Domain?
8. What is Session and Cache object?
9. What is Worker Process?
10. Write syntax for stored procedure.
11. How to handle error in Stored Procedure?
12. Explain Binding in WCF.
13. Explain Contract in WCF.

4. 14. How you will host WCF service?
15. How to handle Error in WCF service?
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1. Explain your Projects
2. What is Generics?
3. What is Delegate and Events?
4. What is difference between Protected and Protected Internal?
5. What is Entity Framework?
6. Explain Page Life Cycle.
7. Explain Session and Application object.
8. What is Worker Process?
9. What is ISAPI?
10. Use of Global.asax?
11. What us JQuery and How you will use JQuery in your application?
12. What is ISNAN?
13. Have you used Telerik controls in your Project?
14. What is stored procedure?
15. How to call Stored Procedure using .Net code?
16. What is Delete and Truncate?
17. How you will insert Bulk records in database?
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These are the questions those have attended by me and my friends in different companies; here we
can see that most of the questions are same. I hope these questions will help you all to attend the
interviews.