How can we export selected record by checkbox in a table view?

Hi Mohit,

Here is the sample code :-

<apex:page controller="ExportToExcelMultipleSheets" contentType="txt/xml#myTest.xls" cache="true">
<apex:outputText value="{!xlsHeader}"/>
<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:html="http://www.w3.org/TR/REC-html40">
<Styles>
<Style ss:ID="s1">
<Alignment/>
<Borders/>
<Font ss:Bold="1"/>
<Interior/>
<NumberFormat/>
<Protection/>
</Style>
</Styles>
<Worksheet ss:Name="Accounts">
<Table x:FullColumns="1" x:FullRows="1">
<Column ss:Width="170"/>
<Row>
<Cell ss:StyleID="s1"><Data ss:Type="String" >Account Name</Data></Cell>
</Row>
<apex:repeat value="{!accountList}" var="account">
<Row>
<Cell><Data ss:Type="String">{!account.name}</Data></Cell>
</Row>
</apex:repeat>
</Table>
</Worksheet>
<Worksheet ss:Name="Contacts">
<Table x:FullColumns="1" x:FullRows="1">
<Column ss:Width="170"/>
<Column ss:Width="280"/>
<Column ss:Width="330"/>
<Row>
<Cell ss:StyleID="s1"><Data ss:Type="String" >Contact Name</Data></Cell>
<Cell ss:StyleID="s1"><Data ss:Type="String" >Email</Data></Cell>
<Cell ss:StyleID="s1"><Data ss:Type="String" >Account Name</Data></Cell>
</Row>
<apex:repeat value="{!contactList}" var="contact">
<Row>
<Cell><Data ss:Type="String">{!contact.name}</Data></Cell>
<Cell><Data ss:Type="String">{!contact.email}</Data></Cell>
<Cell><Data ss:Type="String">{!contact.account.name}</Data></Cell>
</Row>
</apex:repeat>
</Table>
</Worksheet>
</Workbook>
</apex:page>

public with sharing class ExportToExcelMultipleSheets {

public List<account> accountList{get;set;}
public List<contact> contactList{get;set;}
public String xlsHeader{
get{
String strHeader = '';
strHeader += '<?xml version="1.0"?>';
strHeader += '<?mso-application progid="Excel.Sheet"?>';
return strHeader;
}
}
public ExportToExcelMultipleSheets(){
accountList = [select Name,Id from Account LIMIT 10];
contactList = [SELECT id,Name, LastName, Account.Name, Email FROM Contact WHERE Email != '' AND Account.Name != '' LIMIT 5];
}
public Pagereference exportAll(){
return new Pagereference('/apex/exportAll');
}
}

I hope this helps.