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Explain Ancestor relative source binding in WPF ? ( WPF Interview questions with answers)

This relative binding helps to bind properties to the parent element properties. For example in the below XAML code we have a textbox which has two border's as a parent. One border is having dark green and the other border is having dark red color as the border color.
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Interview Questions in ASP.NET,C#.NET,SQL Server,.NET Framework

Here I am posting the interview questions whatever i have faced in my interviews I have searched for so many websites and gathered information from my friends to answer the questions perfectly. i think these questions are very helpful for the people who are trying to get the job on .NET The most common question for experience persons is Why would you like to change the company? 1) I
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C# Unit Testing interview questions with answers: – How can we UNIT test private methods using VSTS ?

In order to invoke private methods in VSTS unit test we have a class called as "privateobject". Create the object of "PrivateObject" class and pass the class whose private method needs to be invoked. In our case "IsNegative" is the private method which has a integer input parameter.You can then use the "PrivateObject" object to invoke the private methods / functions as shown in the below code.
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Interview Questions and Exercises About CSS

If you're in the position of needing to interview someone about their skill and knowledge about CSS, it can be a little hard to think of things to ask on-the-fly. I thought I'd think up and round up some ideas for reference.
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Introduction to Partial Methods

Partial methods are a new feature in the .NET programming world. The earlier versions of .NET had partial class, partial structures, partial interface. With the introduction of ".NET Framework 3.0", the partial family gets a new member partial method, which allows to separate method definition and implementation. Partial methods are not really complicated. In this article, I will try to explain the basic rules of partial methods and how simple it is to use partial methods.
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Database First CRUD operations

Database First CRUD operations Introduction This article demonstrates one of interesting and most useful concept in Entity Framework Model – Database First CRUD operations. Question: What is Database First? In simple terms a Database First allows you to reverse engineer a model from an existing database or create a database using Entity Framework model. In this […]
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Method Overloading in WCF: WCF Interview Series #1

Method or Operation overloading is one of the most important feature of OOPS. In programming languages like C, C++ and C#, this feature is heavily used by developers. While writing Service definition you may come across when you need to overload operations.
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Virtual methods in C#

In Object Oriented Approach, Virtual method or function is a function/method whose behavior can be overridden within the derived class by the function/method of same signature. Same Signature specifies same name, same number and type of parameters, and same return type. Basically, Virtual function has implementation both in base class and derived class. It is used when [...]

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Interview Question: What is Yield Return? Let’s have fun with it

Yield is a contextual keyword available only in certain contextual statements, mainly interacts with the foreach loop. It allows each iteration in a foreach loop to be generated only when needed. In this way it improves the performance of the query.

Today we will discuss about it with a small funny code. Let's see how much we actually know about this keyword. If you can answer the output of the code, you already know about it.


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Interview Question: What is Duck Typing?

"Duck Typing" is not a common interview question but one of the interviewer in a panel may ask you this just to check your knowledge out of the common questionnaire. You might be already answered this in a different question but stucked here.
So, what is this "Duck Typing" and how this benefits a C# developer? Ok, let's start discussing this in today's blog post and I assume, you will find it interesting.

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Extension Methods in C#

Extension Methods in C#

Extension Methods in C#   Introduction Today, in this article let's play around with one of the interesting and most useful concept in C#.   Question: What are extension methods? In simple terms "Extension methods are a special kind of static method, but they are called as if they were instance methods on the extended type." [...]

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What is the difference between Finalize() and Dispose()

Some quick points on Finalize() and Dispose() in C#:

1. Finalize() is the C# equivalent of destructor ~Object() syntax in C#. In VB.Net you implement the Finalize() by overriding it. But, in C# the compiler translates the destructor to a Finalize() method.

2. Finalize() can NOT be overridden or called in C#.

3. Since, Finalize() is called by the Garbage Collector, it is non-deterministic.

4. Dispose() has to be implemented in classes implementing IDispose interface.

5. Its the right place for freeing-up unmanaged resources like file, handles, and connections etc.

6. Dispose() method is called explicitely in the code itself.

7. Dispose() method is automatically called (for objects which implement IDispose), when used in a "using" statement.

Difference between Finalize and Dispose Method in .net :

C# Provides two special methods that are used to release the instance of a class from memory, Finalize() and Dispose().

Finalize(): The Finalize destructor is a special method that is called f…

CSharp Interview Question: What is Action in C Sharp

Action is type of delegate
It returns no value.It may take 0 parameter to 16 parameters.For example below Action can encapsulates a method taking two integer input parameter and returning void.

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Types of Constructor in .Net

Constructor is nothing but a function (with the same name as Class) and is used for initializing the members of a class whenever an class object is created. You can initialize the members with any value (as per member datatype) or with the default values through constructor.

If a class is not defined with the constructor then the CLR (Common Language Runtime) will provide an implicit constructor which is called as Default Constructor.
A class can have any number of constructors provided they vary with the number of arguments that are passed, which is they should have different signatures.

Some of the basic properties of Constructor are :
a. Constructors do not return a value.
b. Constructors can be overloaded.
c. If a class is defined with static and Non-static constructors then the privilege will be given to the Non-static constructors.
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Basis Topics of interview questions for Beginner or 1 Year experience in .Net

For 1 year you have to prepare all basics of .net (c# or vb,sql server,asp.net).

Mainly OOPs concepts.  a.Abstraction
b.Encapsulation
c.Polymorphism
b.Inheritance
d.Interface
e.Abstraction Vs Interface
f.Abstract Classes
g.Static Classes

Framework basics
a.What is .net framework
b.framework 2.0 vs 3.0 vs 3.5
c.What is CLR & explain
d.What is CTS
f.What is CLS
g.How Garbage Collector Works
h.What is JIT & types of JIT?

ADO.net
a.Dataset
b.Datareader
c.DataAdapter
d.Dataset vs DataReader
e.Dataset Vs DataAdapter

C#
a.Assembly and types
b.Partial classes
c.What is webservices
d.Serialization
e.Single ton
f.Single call

Sql Server
a.Constrains
b.primary key Vs unique key
c.Aggregate Functions
d.Stored Procedure
e.Functions
f.Stored Procedure Vs Functions
G.Vies
h.Triggers
i.Joins & types of Jions
j.Having Vs Where

and many more all are basics only.
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A Beginner's Tutorial on String Comparison in C#

Usually in our applications when we want to compare two strings we use the equality operator. Under most scenarios this will work properly but still we should know what are the other ways we can do string comparisons and perhaps achieve better performance and results. So lets say I have a variable str and I want to check whether its value is equal to "Yes" or not.

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T…

Func and Action Delegates

The .Net Framework 3.5 has introduced two sets of System-Defined Delegates named Func andAction. Action<> and Func<> are extremely useful tools for reducing duplication in code and decreasing coupling. The Func Delegate encapsulates a method that accepts between zero and four arguments and returns a value. The Action Delegate encapsulates a method that accepts between zero to four parameters and does not return a value i.e. Action delegates differ from Func in that the method must returns void.
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Metro Applications - FAQ

With the advent of Microsoft Windows 8, Windows Phone 8 and Office 2013, Microsoft is now all about Metro UI and Metro Apps. And when Windows 8 will be released, everybody will be developing or talking about Metro apps. But what is a Metro app and how to build these apps? There are many questions in the mind of many developers. Let's just find answers for few of them in this blog post.

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Return Multiple Values(or Objects) in VB.NET

You might have searched "How to return multiple objects in VB.Net" in google and you might have got a lot of Ir-relevant articles. But this is not such an article, this goes to the point. I am going to teach you how to return multiple values in VB.net.

I gave a lot of try (Searching), how to do the stuff but most of the search results turned out to be like using a single object and returning multiple values in it, but that I do not need. So I thought of writing an article here about the same. So at least it will be helpful for sum beginners.
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New Interview Questions for Senior Software Engineers

New Interview Questions for Senior Software Engineers
What is something substantive that you've done to improve as a developer in your career? Would you call yourself a craftsman (craftsperson) and what does that word mean to you? Implement a using on . What is SOLID? Why is the Single Responsibility Principle important? What is Inversion of Control? How does that relate to dependency injection? How does a 3 tier application differ from a 2 tier one? Why are interfaces important? What is the Repository pattern? The Factory Pattern? Why are patterns important? What are some examples of anti-patterns? Who are the Gang of Four? Why should you care? How do the MVP, MVC, and MVVM patterns relate? When are they appropriate? Explain the concept of Separation of Concerns and it's pros and cons. Name three primary attributes of object-oriented design. Describe what they mean and why they're important. Describe a pattern that is NOT the Factory Pattern? How is it used and when? You…