CRUD Operation With GridView Using LINQ And Lambda Expressions

Introduction

As we all know about GridView, it is a Data Control of ASP.NET which is used to display sata in tabular format.

Lambda Expression

Lambda expression facilitates functional programming. It’s an Anonymous Function.

Syntax:

(Input=>Expression )

Features:

• Using Anonyms variable/parameters.
• No need to define scope like curly braces.
• No need to return.

LINQ Query (Language Integrated Query):

In simple terms, LINQ provide us the facility to interact from front end to databases without directly using and ADO.NET Classes.

In other words, LINQ is a collection of Extension Methods.

Syntax:

From<range variable> IN <IEnumerableCollection >

The following are the basic methods of LINQ:

• From
• Where
• Select

More about LINQ.

Demonstration

Step 1: Open Visual Studio, click Add, then new Web Site:



Add LINQ to SQL Classes:



Step 2: Drag your SQL Table to dbml Layout:



It will automatically create Class , Collection and Properties.

• Class: DataContext, Departmeant
• Collection: Departments
• Proreties: DeparmentID,DeapartmentName ,CapLimits, Location

Step 3: Add a GridView Control to the form and bind accordingly:



Step 4: In Code Behind (.cs Page):

• To Bind Grid View:
  
  
  
  
• For Insert and Delete:
  
  
  
  
• For Update:
  
  

Output will look like the following:



Hopefully, this article will help you to work on GridView and LINQ.