A lambda expression is an anonymous function that you can use to create delegates or expression tree types. By using lambda expressions, you can write local functions that can be passed as arguments or returned as the value of function calls. Lambda expressions are particularly helpful for writing ...

Create, Read, Update, Delete (CRUD) operations with Entity Framework in C# Assuming that you have a User table with the following fields and type: Id int(10) Name varchar(50) Phone varchar(50) Note: Id is Auto Number field. Figure: Entity Data Model on User Table Creat...

Example of LINQ to XML in C# Here is the xml file saved in d:/employees.xml <?xml version="1.0" encoding="utf-8" ?> <Employees> <Employee> <ID>111</ID> <FirstName>Michael</FirstName> <Department>IT Department</D...

Example of LINQ to List<T> You can use LINQ to query against data stored in a collection class, such as the List<T> class (among many others). The following code creates a new List<Employee> collection. The Employee class is simply a custom class that was written to hold a few pr...

Understanding the Basics of Web Service in ASP.NET This article aims at understanding the need for a web service, the benefits of having a web service and how we can create a basic web service and consume it. Background Connectivity between applications is very important. Connectivity in any cas...

What's the Difference between WCF and Web Services? In this article, I will explain the difference between ASP.NET web service and WCF services like ASP.NET web services. I will also discuss how we use both the technologies for developing the web services. Web Service in ASP.NET A...

Classes in C# Programming A class defines a type of object. A class name should be a common noun. A class is the most powerful data type in C#. Like structures, a class defines the data and behavior of the data type. Programmers can then create objects that are instances of this class. Unli...

Objects in C# programming Objects are programming constructs that have data, behavior, and identity. Objects have identity — two objects with the same set of data are not necessarily the same object. You can compare two objects with two table records: both have same field but they are uni...

Using Constructors in C# Programming Constructors are class methods that are executed when an object of a given type is created. Constructors have the same name as the class, and usually initialize the data members of the new object. In the following example, a class called Taxi is defined with ...

Casting in C# Programming Converting between data types can be done explicitly using a cast, but in some cases, implicit conversions are allowed. For example: static void TestCasting() { int i = 10; float f = 0; f = i; // An implicit conversion, no data will be lost. f = 0.5F;...