Originally posted by TimberWolf
View Post
- Visitors can check out the Forum FAQ by clicking this link. You have to register before you can post: click the REGISTER link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. View our Forum Privacy Policy.
- Want to receive the latest contracting news and advice straight to your inbox? Sign up to the ContractorUK newsletter here. Every sign up will also be entered into a draw to WIN £100 Amazon vouchers!
.Net click through forms
Collapse
X
-
Can't remember off the top of my head what the resolution of DateTime is, in earlier .Net it was as large as 500ms. Stopwatch will use high def if it's available.Cooking doesn't get tougher than this. -
Comment
-
Ah, I see you'd proposed a similar and probably more exact solution earlier. My bad.Originally posted by TheBigYinJames View PostCan't remember off the top of my head what the resolution of DateTime is, in earlier .Net it was as large as 500ms. Stopwatch will use high def if it's available.Comment
-
The precision has always been (according to the Docs) 100 Nanosecs. However there are some issues:-Originally posted by TheBigYinJames View PostCan't remember off the top of my head what the resolution of DateTime is, in earlier .Net it was as large as 500ms. Stopwatch will use high def if it's available.
https://connect.microsoft.com/Visual...?wa=wsignin1.0
Internally the stopwatch uses datetime.utcnow - which is precisely what datetime.now does.
I doubt there is any difference in efficiency between datetime.now.subtract and using a stopwatch.Comment
-
Actually, there might be a slight overhead in loading the stopwatch wrapper object (needs to load the Diagnostics assembly?) so DateTimeNow.Subtract(someStoredVal) would probably be marginally quicker.Originally posted by ASB View PostI doubt there is any difference in efficiency between datetime.now.subtract and using a stopwatch.
I liked the modal dialogue suggestion.
And all because the lady loves Milk Tray.Cooking doesn't get tougher than this.Comment
-
btw stopwatch is not a timer. It is just a wrapper round datetime. It's lightweight. However it does some more calculations than would be done with using datetime.subtract.now.subtract.Originally posted by TimberWolf View PostOr to save using a timer, store the system time at form load and if the new form's button is clicked less than 200ms or so after form load, ignore it. 3 lines of code I expect.Comment
-
Out of interest (and boredom) I had a look at it in reflector. It does have a call to a kernel function on first instantiation to discover if it's high res or not. I it calls the same functions as datetime.now does in general. I think one would need a few hundred billion iterations to find a timeable difference though..Originally posted by TheBigYinJames View PostActually, there might be a slight overhead in loading the stopwatch wrapper object (needs to load the Diagnostics assembly?) so DateTimeNow.Subtract(someStoredVal) would probably be marginally quicker.
I liked the modal dialogue suggestion.
And all because the lady loves Milk Tray.Comment
- Home
- News & Features
- First Timers
- IR35 / S660 / BN66
- Employee Benefit Trusts
- Agency Workers Regulations
- MSC Legislation
- Limited Companies
- Dividends
- Umbrella Company
- VAT / Flat Rate VAT
- Job News & Guides
- Money News & Guides
- Guide to Contracts
- Successful Contracting
- Contracting Overseas
- Contractor Calculators
- MVL
- Contractor Expenses
Advertisers
Contractor Services
CUK News
- New UK crypto rules now apply. Here’s how mandatory reporting affects contractors Today 07:03
- What the Ray McCann Loan Charge Review means for contractors Yesterday 06:21
- IT contractor demand defied seasonal slump in December 2025 Jan 13 07:10
- Five tax return hacks for contractors as Jan 31st looms Jan 12 07:45
- How to land a temporary technology job in 2026 Jan 9 07:01
- Spring Forecast 2026 ‘won’t put up taxes on contractors’ Jan 8 07:26
- Six things coming to contractors in 2026: a year of change, caution and (maybe) opportunity Jan 7 06:24
- Umbrella companies, beware JSL tunnel vision now that the Employment Rights Act is law Jan 6 06:11
- 26 predictions for UK IT contracting in 2026 Jan 5 07:17
- How salary sacrifice pension changes will hit contractors Dec 24 07:48

Comment