In magento 2.0 how can i add new top links and remove existing one using xml
If you extended Luma Theme
app/design/frontend/Amydus/test/Magento_Theme/layout/default.xml
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<!-- you can easly add New links with following code -->
<referenceBlock name="header.links">
<!-- Contact us Link -->
<block class="Magento\Framework\View\Element\Html\Link" name="contactus.link" after="register-link">
<arguments>
<argument name="label" xsi:type="string" translate="false">Constact Us</argument>
<argument name="path" xsi:type="string" translate="false">contact-us</argument>
</arguments>
</block>
<!-- CMS Page Link Link -->
<block class="Magento\Framework\View\Element\Html\Link" name="aboutus.link" after="contactus.link">
<arguments>
<argument name="label" xsi:type="string" translate="false">about Us</argument>
<argument name="path" xsi:type="string" translate="false">about-us</argument>
</arguments>
</block>
<!-- you can easly Remove links with following code -->
<referenceBlock name="register-link" remove="true" /> <!--for Create Account Link-->
<referenceBlock name="authorization-link" remove="true" /> <!--for Sign In Link -->
<referenceBlock name="wish-list-link" remove="true" /> <!--for WishList Link-->
<referenceBlock name="my-account-link" remove="true" /> <!--for My Account Link-->
</referenceBlock>
</body>
</page>
If you extended Blank Theme
app/design/frontend/Amydus/test/Magento_Theme/layout/default.xml
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<!-- you can easly add New links with following code -->
<referenceBlock name="top.links">
<!-- Contact us Link -->
<block class="Magento\Framework\View\Element\Html\Link" name="contactus.link" after="register-link">
<arguments>
<argument name="label" xsi:type="string" translate="false">Constact Us</argument>
<argument name="path" xsi:type="string" translate="false">contact-us</argument>
</arguments>
</block>
<!-- CMS Page Link Link -->
<block class="Magento\Framework\View\Element\Html\Link" name="aboutus.link" after="contactus.link">
<arguments>
<argument name="label" xsi:type="string" translate="false">about Us</argument>
<argument name="path" xsi:type="string" translate="false">about-us</argument>
</arguments>
</block>
<!-- you can easly Remove links with following code -->
<referenceBlock name="register-link" remove="true" /> <!--for Create Account Link-->
<referenceBlock name="authorization-link" remove="true" /> <!--for Sign In Link -->
<referenceBlock name="wish-list-link" remove="true" /> <!--for WishList Link-->
<referenceBlock name="my-account-link" remove="true" /> <!--for My Account Link-->
</referenceBlock>
</body>
</page>
You can also use the Magento\Customer\Block\Account\SortLinkInterface
block class, which allows you to sort links in the top.links block.
<referenceBlock name="top.links">
<block class="Magento\Customer\Block\Account\SortLinkInterface" name="newsletter_subscription_top_link">
<arguments>
<argument name="label" xsi:type="string" translate="true">Newsletter Subscription</argument>
<argument name="path" xsi:type="string" translate="true">newsletter/manage</argument>
<argument name="sortOrder" xsi:type="number">10</argument>
</arguments>
</block>
</referenceBlock>