linq in asp.net

Muhammed Ajmal

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LINQ

Disclaimer: This presentation is prepared by trainees ofbaabtra as a part of mentoring program. This is not officialdocument of baabtra –Mentoring PartnerBaabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd

Introduction

• LINQ stands for Language-Integrated Query

• It is simply a unified programming model for writing

SQL queries in simple language(C#,VB,etc) without

learing SQL.

LINQ contd..

• It has a single unitive syntax for querying multiple

data sources.

• It uses a declarative syntax that allows developers to

tell the compiler what to do.

Structure of LINQ

How Write Linq query ?

Var variablename=

from tempvariable

in dataSource

Where condition

Select columns

Stages of the Query

1. Obtain the data source for the query

2. Create the query

3. Execute query

Advantage

• LINQ syntax is same, when querying multiple data

sources.

• it provides syntax highlighting.

Example 1

create dataContext class

Datacontext class

Data from db

output

Data From object

Contd..

Thank you

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