Adds the specified flags to the messages specified by MessageSet .
Syntax
[VB.NET]
Public Function AddMessageFlagsAsync(ByVal Flags As String)AsTask
[C#]
public Task AddMessageFlagsAsync(string flags);
Remarks
This method is the asynchronous version of the AddMessageFlags method and is used to support asynchronous operations in WinRT. Please refer to AddMessageFlags for more information.