c# - Owin Call Duration -

is there simple way find call duration in c#.

i using owin middleware intercept calls api , log information them , part of log duration of call.

public override async task invoke(iowincontext context) {    var request = context.request;    var response = context.response;    var username = request.user != null && request.user.identity.isauthenticated ? request.user.identity.name : "no username";     var entity = new trackingentity()    {       username = username    };     // invoke next middleware in pipeline     await next.invoke(context);     writerequestheaders(request, entity);    writeresponseheaders(response, entity);     await storage.insertentity(entity); } 

if tracking entity has duration field on storing time length of call best way go recording it?

public timespan duration { get; set; } 

is accurate way use timer starts before calling next , ends after?

any input appreciated think i'm overthinking this.

thanks in advance.

i don't think need overhead of creating timer, record start time variable , end time in variable set duration.

var starttime = datetime.now; await next.invoke(context); var endtime = datetime.now; duration = endtime - starttime; 

it's little messy, if doing in middleware logging, want quick, , should fit bill.