A (very) Interesting LINQQuery

I was reading ASP .NET forums when I found this post :

The scenario is :

We have input data in this format :

EmpId Name wages
1 Bilal $200
1 Bilal $300
1 Bilal $400
2 Haris $500
2 Haris $600

The required output is in following way:
Name OriginalWage DuplicateWage
Tom $200 $300
Tom $200 $400
Rob $500 $600

We need to combine each person first record to all other records using LINQ. So I decided to write my own solution of this problem.

I created this sample input data:
For sample input data in c#:
var ret = new[]{
new { SNO=1,Name="Tom",Wages=200 },
new { SNO=1,Name="Tom",Wages=300 },
new { SNO=1,Name="Tom",Wages=400 },
new { SNO=2,Name="Rob",Wages=500 },
new { SNO=2,Name="Rob",Wages=600 },
new { SNO=3,Name="John",Wages=700 },
new { SNO=3,Name="John",Wages=800 },
new { SNO=3,Name="John",Wages=500 },
new { SNO=3,Name="John",Wages=600 }
};

To achieve the results as per our requirment, i wrote this LINQ query:

var mylinqquery= (from item in result
group item by item.empid into group
let one = group.First()
let second = group.Skip(1).Select(x => new { Name = emp.Name, Wage = emp.Wages, Dup =x.Wages})
select second).SelectMany(x=>x).ToList();

Here is our desired output:

linq-group-by

What is the difference between Grid view,Data list, and repeater?

Grid view and data grid by default display all the data in tabular format i.e. in table and rows. Developer has no control to change the table data display of datagrid.

Data list also displays data in a table but gives some flexibility in terms of displaying data row wise and column wise using the repeat direction property.

Repeater control is highly customizable. It does not display data in table by default. So you can customize from scratch the way you want to display data.