<c:void
value? = statement_expression >
<!-- Content: sequence-constructor -->
</c:void>Evaluates ignoring the result.
- Category
- instruction
- Permitted parent elements
- Any XCST element whose content model is sequence-constructor
- Any literal result element
Attributes
value |
The expression to evaluate. |
In addition to the attributes in the preceding table, there are a number of standard attributes that may appear on any XCST element.
Remarks
The c:void instruction has two uses. The first use is to call methods that don’t return values (void methods in C#), or when you don’t want to output the return value. The expression in the value attribute must be a valid C# statement.
Example: Redirecting
In the following example, the Redirect method is a void method, you can use c:void to call it.
<c:void value='Redirect("/")'/>
The second use is to evaluate a sequence constructor but discarding the output. This can be useful if you run a program only for its side-effects.
Error Conditions
It is a compilation error if the value attribute is present when the content of the element is non-empty.