In this tutorial, i will tell you how to bind Repeater using Linq in asp.net. This is my First Example in Viusal Studio 2010 and Framework 4.O.

Overview

1. Introduction
2. Where to use Repeater
3. Create Project
4. Countries Classes
5. Repeater Control
6. Inheritance Hierarchy
   
7. Framework version information
8. Output
   
9. Conclusion
10. Download
11. Demo

Introduction

Basic templated data bound list is called Repeater.In Repeater control you can use markup tags e.g table,tr,td. under the HeaderTemplate table tag <Table> is used. A table row and columns tag <tr>, <td> include ItemTemplate. and at the end of table tag </table> include in the FooterTemplate.Namespace of Repeater is System.Web.UI.WebControls.

Where to use Repeater

When you have to display a data in way like Table , Div Span tags then you have to use Repeater.DataList and Datagrid Automatically genrate HTML Markup according to devloper Specified.

Repeater have five template.

1. AlternatingItemTemplate
2. FooterTemplate
3. HeaderTemplate
4. ItemTemplate
5. SeparatorTemplate
   

Syntax:

<asp:Repeater ID="Repeater1" runat="server">
<HeaderTemplate>
            <table>
</HeaderTemplate>
      <ItemTemplate>
            <tr>
               <td>&nbsp;</td>
               </tr>
</ItemTemplate>
<FooterTemplate>
            </table>
</FooterTemplate>
</asp:Repeater>

Create Project

Open your Visual Studio 2010 and Create a Solution by selecting .Net Framework 4.O. Next Right Click on your Solution Explorer at Right top of Visual Studio Window, Now  Create a New web site.

Classess

From Solution Explorer, Right click on your web site and create a App_code folder by selecting  Add asp.net Folder. Create a CountriesBaseClass.cs which has three properties of different type,string and int. as given below.

public class CountriesBaseClass
{    private int _countryId;
     private string _countryName;
     private string _countryCode;
	public CountriesBaseClass()
	{}
    public int CountryID
    {
        get { return _countryId; }
        set { _countryId = value; }
    }
    public string CountryName
    {
        get { return _countryName; }
        set { _countryName = value; }
    }
    public string CountryCode
    {
        get { return _countryCode; }
        set { _countryCode = value; }
    }

Right Click on App_code folder in your project. click on Add New Item a small window will be open as shown below figure.Countries class Will return all countries which will be populated with a number of country Object.

A List<CountriesBaseClass> is instantiated.First List<CountriesBaseClass> will be created. and return the list.

Create a  class instance as given below. Here, I am using a Generics based List collection of type CountriesBaseClass

List _Countries = new List
{
   
new CountriesBaseClass { CountryID=1,CountryName= "Afghanistan", CountryCode= "9AF"},
new CountriesBaseClass { CountryID=2,CountryName= "Albania",CountryCode=  "9AL"}, 
new CountriesBaseClass { CountryID=3,CountryName= "Algeria", CountryCode= "9AG"}, 
new CountriesBaseClass { CountryID=4,CountryName=  "Andorra",CountryCode= "9AN"},
new CountriesBaseClass { CountryID= 5,CountryName= "Angola", CountryCode= "9AO"}, 
new CountriesBaseClass { CountryID= 6,CountryName= "Anguilla",CountryCode=  "9AV"}, 
new CountriesBaseClass { CountryID=7,CountryName= "Antigua and Barbuda", CountryCode= "9AC"}, 
new CountriesBaseClass { CountryID=8,CountryName= "Argentina", CountryCode= "9AR"}, 
new CountriesBaseClass { CountryID=9,CountryName= "Ashmore Cartier Islands", CountryCode= "9AT"}, 
new CountriesBaseClass { CountryID=10,CountryName=  "Australia",CountryCode=  "9AS"}, 
new CountriesBaseClass { CountryID= 11,CountryName= "Austria", CountryCode= "9AU"}, 
new CountriesBaseClass { CountryID= 12,CountryName=  "Bahamas, The", CountryCode= "9BF"}, 
new CountriesBaseClass { CountryID= 13,CountryName=  "Bahrain", CountryCode= "9BA"}, 
new CountriesBaseClass { CountryID=14,CountryName=  "Bangladesh",CountryCode=  "9BG"}, 
new CountriesBaseClass { CountryID=15,CountryName=  "Barbados", CountryCode= "9BB"}, 
new CountriesBaseClass { CountryID=16,CountryName=  "Bassa da India", CountryCode= "9BS"}, 
new CountriesBaseClass { CountryID= 17,CountryName=  "Belgium", CountryCode= "9BE"}, 
new CountriesBaseClass { CountryID=18,CountryName=  "Belize", CountryCode= "9BH"}, 
new CountriesBaseClass { CountryID= 19,CountryName=  "Benin", CountryCode= "9DM"}, 
new CountriesBaseClass { CountryID= 20,CountryName=  "Bermuda",CountryCode=  "9BD"}, 
new CountriesBaseClass { CountryID= 21,CountryName= "Bhutan", CountryCode= "9BT"}, 
new CountriesBaseClass { CountryID= 22,CountryName=  "Bolivia",CountryCode=  "9BL"}, 
new CountriesBaseClass { CountryID=23,CountryName=  "Botswana", CountryCode= "9BC"}, 
new CountriesBaseClass { CountryID=24,CountryName=  "Bouvet Island",CountryCode=  "9BV"}, 
new CountriesBaseClass { CountryID= 25,CountryName=  "Brazil", CountryCode= "9BR"}, 
new CountriesBaseClass { CountryID= 26,CountryName=  "British Indian Ocean Territory", CountryCode= "910"}, 
new CountriesBaseClass { CountryID= 27,CountryName=  "British Virgin Islands",CountryCode=  "9VI"}, 
new CountriesBaseClass { CountryID= 28,CountryName=  "Brunei", CountryCode= "9BX"}, 
new CountriesBaseClass { CountryID= 29,CountryName=  "Bulgaria",CountryCode=  "9BU"}, 
new CountriesBaseClass { CountryID= 30,CountryName=  "Burma", CountryCode= "9BM"}, 
new CountriesBaseClass { CountryID= 31,CountryName=  "Burundi", CountryCode= "9BY"}, 
new CountriesBaseClass { CountryID= 32,CountryName=  "Cameroon",CountryCode=  "9CM"}, 
new CountriesBaseClass { CountryID= 33,CountryName=  "Canada",CountryCode=  "9CA"}, 
new CountriesBaseClass { CountryID= 34,CountryName=  "Cape Verde",CountryCode=  "9CV"}, 
new CountriesBaseClass { CountryID= 35,CountryName=  "Cayman Islands",CountryCode=  "90"}, 
new CountriesBaseClass { CountryID= 36,CountryName=  "Central African Republic", CountryCode= "9CT"}, 
new CountriesBaseClass { CountryID=37,CountryName=  "Chad",CountryCode=  "9CD"}, 
new CountriesBaseClass { CountryID=38,CountryName=  "Chile",CountryCode=  "9CI"}, 
new CountriesBaseClass { CountryID= 39,CountryName=  "China",CountryCode=  "9CH"}, 
new CountriesBaseClass { CountryID= 40,CountryName=  "Christmas Island",CountryCode=  "9KT"}
}

getAllCountries function, Linq Query will return All countries as given Below.

public List getAllCountries()
    {
        var r = from u in _Countries
                select u;
        return r.ToList();
    }

HTML Mark Up

Now In Default.aspx Page, Drag and Drop Repeater from Toolbox  as shown in belwo figure.

Server Side Coding

Open your Default.aspx.cs Page, and on Page Load,Create  a Countries Class Object pass getAllCountries Function Pass to  data source  and Bind it as show below.

Countries Obj = new Countries();

Repeater1.DataSource = Obj.getAllCountries();

Repeater1.DataBind();

Inheritance

System.Web.UI.WebControl.Repeater inherit from System.Web.UI.Control and System.Web.UI.Control inherit from System.Object.

Framework version information

Repeater is support in .Net framework 1.0, 1.1, 2.O, 3.O, 3.5 and 4.O.

Output

Download:

Repeater.rar (129.18 kb)

Demo:

Click here to View online sample.

For More Detail visit msdn

Repeater Class