用户界面元素提取

使用“遍历用户界面元素”时，从活动主体中指明打开“遍历用户界面元素”向导，该向导可帮助您指向要提取的数据。

使用向导

To begin, you must click the Add UI Element button. This enables you to indicate the first element in the table you want to work with and automatically identifies and selects all items that are similar to it.

指定元素后，您可以选择元素周围的标签，并将其添加到当前选择中。 与之前一样，所有与所选标签相似的标签都将自动添加到所选内容中。 系统还会提示您选择是否要将新标签添加到数据提取的最终结构中的其他列。

You can also add a link for the next page, by using the Next-page link button, so you can extract data spanning multiple pages.

Once you have finished making your selection, clicking the button closes the wizard and saves your changes.

配置选择

Once you have made a selection, you can preview it and edit certain parameters that define it. If you have already saved the selection made earlier, you can access it by selecting Edit Configuration from the context menu in the body of the activity.

All items in the selection can be deleted by clicking the button.

To preview the results, click the button. A window is displayed, showing the current state of the table.

To add an anchor to the Next Page button, highlight the button in the wizard and click the button. A Selection Screen is opened and you can add an Anchor or edit the Descriptor of the button.

Clicking Confirm in the Selection Screen saves the anchor and edits you have done and returns to the main Wizard window. Once all your configurations are done, you can hit the button to save your changes.

The Settings section in the Wizard enables you to configure a limit for the number of the UI Elements you want to extract. Editing this setting also edits the Limit extraction to and Number of items properties in the activity. There are three types of limits available, as follows:

• Max UI Elements - Specifies the maximum number of UI Elements you want to extract. The default value is 1000.
• No limit - Extracts all elements that can be found, without any limit.
• Max Pages - Specifies the maximum number of pages you want to extract UI Elements from, when extracting data from tables that span multiple pages.

You can also filter the items you extracted with your selection by using the Configure filter button in the body of the activity, which opens a Filter UI Elements window. In this window, you can select any item you have indicated and specify a condition for it be filtered.