Thanks bitingduck (Pilgrim). Your suggested solution is very clear and neat way of producing xml format file. But only problem is that i don't want to display last 2 closing container tags. I did try removing that from wrapper but it didn't work. Is ther any way we can't avoid writing the last 2 container tags please..

Error we get if we remove the closing tag :

mismatched tag at line 7, column 4, byte 333 at C:/Perl64/lib/XML/Pars
+er.pm line
 187.
[download]

Main program :

#!/usr/bin/perl
use warnings; 
use strict;

use Text::CSV;
use XML::TreeBuilder;
use Data::Dumper;

my $xmlbase='original.xml';
my $paramsfile = 'params.csv';

# the list of tags filled from the csv file
my @taglist=qw(name protocol host commandline);

# this is the part that repeats, so we break it out separately
# the tags that get filled from the CSV file are left empty
my $connection= <<END
        <connection type="PuTTY" name="WSSS">
          <connection_info>
            <name></name>
            <protocol></protocol>
            <host></host>
            <port>22</port>
            <session>Default Settings</session>
            <commandline></commandline>
            <description />
          </connection_info>
          <login>
            <login />
            <password />
            <prompt />
          </login>
          <timeout>
            <connectiontimeout>1000</connectiontimeout>
            <logintimeout>750</logintimeout>
            <passwordtimeout>750</passwordtimeout>
            <commandtimeout>750</commandtimeout>
          </timeout>
          <command>
            <command1 />
            <command2 />
            <command3 />
            <command4 />
            <command5 />
          </command>
          <options>
            <loginmacro>False</loginmacro>
            <postcommands>False</postcommands>
            <endlinechar>10</endlinechar>
          </options>
        </connection>
END
;
open (my $resultfile, '>>', 'resultxml.xml') or die "Can't open file: 
+$!";
#this is the wrapper
my $config= <<END
<?xml version="1.0" encoding="UTF-8"?>
<!-- The following lines can be modified at your own risks.  -->
<configuration version="0.2.1.4" savepassword="True">
  <root type="database" name="WSSS" expanded="True">
    <container type="folder" name="CM" expanded="True">
      <container type="folder" name="1-AD/M" expanded="True">
      </container>
    </container>
  </root>
</configuration>
END
;

#start an xml structure with the outer wrapper
my $tree=XML::TreeBuilder->new(); 
$tree->parse($config);

# find the insert location
my $container=$tree->look_down("_tag"=>"container", "name"=>"1-AD/M");

my $csv=Text::CSV->new(); 
open my $fh, "<:encoding(utf8)", $paramsfile or die "$paramsfile: $!";
# loop through the lines of the CSV and copy the connection structure 
+into
# the wrapper with the updated values
while(my $row=$csv->getline($fh)){
    my $contree=XML::TreeBuilder->new();  #make an xml structure of th
+e connection
    $contree->parse($connection);
    $container->push_content($contree);   #insert it into the wrapper
    $contree->attr('name',$row->[0]);     #set the name attribute
    $container->push_content("\n       ");  #make it a little prettier
    my $index=0;
    for my $tagname(@taglist){            #loop through the columns
        my $tag=$contree->look_down('_tag'=> $tagname);
        $tag->push_content($row->[$index++]);
    }  
    
}

#print '<?xml version="1.0" encoding="UTF-8"?>'."\n";
print $tree->as_XML();
print $resultfile '<?xml version="1.0" encoding="UTF-8"?>'."\n";
print $resultfile $tree->as_XML();
close($resultfile);
[download]

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