During a debug session, you can watch or inspect XPath expressions.
When you watch an XPath expression, it is evaluated in the current debug context
in the Expressions view and reevaluated each time the
debugger suspends (for example, when a breakpoint is hit). When you inspect
an XPath expression, you are evaluating its current value only and it is not
reevaluated.
You can set XPath expression watches from the Expressions view
or from the editor. You can set XPath expressions to be inspected from the
editor.
Once you have set a watch expression, you can enable, disable,
edit, or remove it using pop-up menu items in the Expressions view.
Once you have set an inspect expression, you can remove it using the pop-up
menu in the Expressions view.
To watch an XPath
expression from the Expressions view, complete these
steps:
- Right-click in the Expressions view and choose Add
Watch Expression from the pop-up menu.
- In the Add Watch Expression dialog box, enter
the expression to watch.
- If you want the watch to be disabled, deselect the Enable check
box. Otherwise, leave this check box selected.
- Click OK to exit the dialog box.
To watch an XPath expression from the editor, complete these steps:
- In the editor, select the expression that you want to watch.
Note: The
expression must be a valid XPath expression or a valid variable reference.
To reference a variable, the variable name must be preceded with $.
- Right-click the expression and choose Watch from
the pop-up menu.
To inspect an XPath expression from the editor, complete these steps:
- In the editor, select the expression that you want to inspect.
Note: The
expression must be a valid XPath expression or a valid variable reference.
To reference a variable, the variable name must be preceded with $.
- Right-click the expression and choose Inspect from
the pop-up menu.
If you are inspecting an XPath expression, you can change it to a
watch expression. To do this, select the expression in the Expressions view,
right-click, and choose Convert to Watch Expression from
the pop-up menu.