XmlWriter.WriteProcessingInstructionAsync(String, String) Method
Definition
Important
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Asynchronously writes out a processing instruction with a space between the name and text as follows: <?name text?>.
public:
virtual System::Threading::Tasks::Task ^ WriteProcessingInstructionAsync(System::String ^ name, System::String ^ text);public virtual System.Threading.Tasks.Task WriteProcessingInstructionAsync (string name, string text);public virtual System.Threading.Tasks.Task WriteProcessingInstructionAsync (string name, string? text);abstract member WriteProcessingInstructionAsync : string * string -> System.Threading.Tasks.Task
override this.WriteProcessingInstructionAsync : string * string -> System.Threading.Tasks.TaskPublic Overridable Function WriteProcessingInstructionAsync (name As String, text As String) As TaskParameters
- name
- String
The name of the processing instruction.
- text
- String
The text to include in the processing instruction.
Returns
The task that represents the asynchronous WriteProcessingInstruction operation.
Exceptions
An XmlWriter method was called before a previous asynchronous operation finished. In this case, InvalidOperationException is thrown with the message "An asynchronous operation is already in progress."
-or-
An XmlWriter asynchronous method was called without setting the Async flag to true. In this case, InvalidOperationException is thrown with the message "Set XmlWriterSettings.Async to true if you want to use Async Methods."
Remarks
This is the asynchronous version of WriteProcessingInstruction, with the same functionality. To use this method, you must set the Async flag to true.
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by WriteProcessingInstruction(String, String).
