对于选中的 dataTable 标签，切换至 Properties 视图，并点击按钮以添加一个新的子标签。
With the dataTable tag selected, go to the Properties view and click the button to add new child tags.
您可以在树视图(treeview)中的任何地方这么做，并且每次都只能得到可作为所选组件的子节点添加的相关组件的一个列表。
You can do this at any place in the treeview, and you will always only get a list of components that are relevant to add as child nodes for the selected components.
在列标签的Properties视图中，点击视图顶部的按钮以添加一个子标签，如图14所示。
On the Properties view for the column tag, click the button at the top of the view to add a child tag, as shown in Figure 14.
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