给初学的朋友们，datagrid用xml作为数据源，并且有更新，删除和排序的操作（VB）

</book>

<book>

<isbn>0887309372</isbn>

<author>Al Reiss, Laura Reiss</author>

<title>22 Immutable Laws of Branding</title>

<category>marketing</category>

<comments>This book is great for people who used 22 Immutable Laws of Marketing to build a brand and now want to strengthen that brand.</comments>

</book>

<book>

<isbn>0679757651</isbn>

<author>Tom Peters</author>

<title>Circle of Innovation</title>

<category>marketing</category>

<comments>His most recent book is his best by far!</comments>

</book>

<book>

<isbn>0884270610</isbn>

<author>Eli Goldthrait</author>

<title>The Goal</title>