Magenro admin grid new Column element (code\local\Webkul\Mpshipping\Block\Adminhtml\Mpshipping\Edit\Tab\Grid.php)

Grid.php

<?php
class Webkul_Mpshipping_Block_Adminhtml_Mpshipping_Edit_Tab_Grid extends Mage_Adminhtml_Block_Widget_Grid
{
    public function __construct()
    {
        parent::__construct();
        $this->setId('mpshippingGrid');
        $this->setDefaultDir('ASC');
        $this->setUseAjax(true);
        $this->setSaveParametersInSession(true);
    }
//https://www.atwix.com/magento/customize-orders-grid/
    protected function _prepareCollection()
    {
        $collection = Mage::getModel('mpshipping/mpshipping')->getCollection();
        $collection->getSelect()->join('marketplace_userdata', 'main_table.partner_id = marketplace_userdata.mageuserid
        and marketplace_userdata.store_id=1',array('shoptitle'));

        $this->setCollection($collection);



        foreach ($collection as $col) {
            $methodName = '';
            if ($col->getShippingMethodId()) {
                $methodName = Mage::getModel('mpshipping/mpshippingmethod')->load($col->getShippingMethodId())->getMethodName();
            }

            $collection_user = Mage::getModel('customer/customer')->load($col->partner_id);
          //  $collection_user ->addAttributeToSelect('firstname');
          //  $collection_user   ->addAttributeToSelect('lastname');

            $ad_soyad=$collection_user->getFirstname()." " .$collection_user->getLastname();

            $col->ad_soyad=sprintf('<a href="%s" title="'.$ad_soyad.'">%s</a>',
                $this->getUrl("adminhtml/customer/edit",array("id"=>$col->partner_id)),$ad_soyad);

            $col->shoptitle=sprintf('<a href="%s" title="'.$col->shoptitle.'">%s</a>',
                $this->getUrl("adminhtml/customer/edit",array("id"=>$col->partner_id)),$col->shoptitle);


            $col->setSubmethodName($methodName);
       //     $col->setSubmethodName($collection_user);
        }

        $collection->printLogQuery(true,true);

        return parent::_prepareCollection();
    }

    protected function _prepareColumns()
    {
        $this->addColumn(
            'mpshipping_id', array(
                'header'    => Mage::helper('mpshipping')->__('ID'),
                'align'     =>'right',
                'width'     => '50px',
                'index'     => 'mpshipping_id',
            )
        );
        $this->addColumn(
            'partner_id', array(
                'header'    => Mage::helper('mpshipping')->__('Seller Id'),
                'align'     =>'right',
                'width'     => '50px',
                'index'     => 'partner_id',
            )
        );
////selman

        $this->addColumn(
            'shoptitle', array(
                'header'    => Mage::helper('mpshipping')->__('Shop Title'),
                'align'     =>'right',
                'width'     => '50px',
                'type'      => 'text',
                'index'     => 'shoptitle',
               // 'filter'    => true,
            )
        );
        $this->addColumn(
            'ad_soyad', array(
                'header'    => Mage::helper('mpshipping')->__('Müşteri Ad Soyad'),
                'align'     =>'right',
                'width'     => '50px',
                'type'      => 'text',
                'index'     => 'ad_soyad',
                // 'filter'    => true,
            )
        );


//selman son
        $this->addColumn(
            'dest_country_id', array(
                'header'    => Mage::helper('mpshipping')->__('Country Id'),
                'align'     =>'left',
                'index'     => 'dest_country_id',
            )
        );
        $this->addColumn(
            'dest_region_id', array(
                'header'    => Mage::helper('mpshipping')->__('Region Id'),
                'align'     =>'left',
                'index'     => 'dest_region_id',
            )
        );
        $this->addColumn(
            'dest_zip', array(
                'header'    => Mage::helper('mpshipping')->__('ZIP From'),
                'align'     =>'left',
                'index'     => 'dest_zip',
            )
        );
        $this->addColumn(
            'dest_zip_to', array(
                'header'    => Mage::helper('mpshipping')->__('ZIP To'),
                'align'     =>'left',
                'index'     => 'dest_zip_to',
            )
        );
        $this->addColumn(
            'price', array(
                'header'    => Mage::helper('mpshipping')->__('Price'),
                'align'     =>'left',
                'index'     => 'price',
                'type'     => 'price',
                'currency_code' => $this->getcurrency(),
            )
        );
        $this->addColumn(
            'weight_from', array(
                'header'    => Mage::helper('mpshipping')->__('Weight From'),
                'align'     =>'left',
                'index'     => 'weight_from',
            )
        );
        $this->addColumn(
            'weight_to', array(
                'header'    => Mage::helper('mpshipping')->__('Weight To'),
                'align'     =>'left',
                'index'     => 'weight_to',
            )
        );
        $this->addColumn(
            'submethod_name', array(
                'header'    => Mage::helper('mpshipping')->__('Sub Method Name'),
                'type'      => 'text',
                'align'     =>'left',
                'index'     => 'submethod_name',
                'sortable'  =>false,
                'filter'    =>false,
            )
        );
        $this->addColumn(
            'is_range', array(
                'header'    => Mage::helper('mpshipping')->__('Is Range'),
                'align'     =>'left',
                'index'     => 'is_range',
            )
        );
        $this->addColumn(
            'zipcode', array(
                'header'    => Mage::helper('mpshipping')->__('Zip Code'),
                'align'     =>'left',
                'index'     => 'zipcode',
            )
        );


        $this->addExportType('*/*/exportCsv', Mage::helper('mpshipping')->__('CSV'));
        $this->addExportType('*/*/exportXml', Mage::helper('mpshipping')->__('XML'));

        return parent::_prepareColumns();
    }

    protected function _prepareMassaction()
    {
        $this->setMassactionIdField('mpshipping_id');
        $this->getMassactionBlock()->setFormFieldName('mpshipping');

        $this->getMassactionBlock()->addItem(
            'delete', array(
                'label'    => Mage::helper('mpshipping')->__('Delete'),
                'url'      => $this->getUrl('*/*/massDelete'),
                'confirm'  => Mage::helper('mpshipping')->__('Are you sure?')
            )
        );

        return $this;
    }
    private function getcurrency()
    {
        return (string)Mage::getStoreConfig(Mage_Directory_Model_Currency::XML_PATH_CURRENCY_BASE);
    }

    public function getGridUrl()
    {
        return $this->getUrl("*/*/grid", array("_current"=>true));
    }
}