If you are worried that some code is very time-consuming, you can use StopWatch to check the time consumed by this code, as shown in the code below
System.Diagnostics.Stopwatch timer = new System.Diagnostics.Stopwatch();
timer.Start();
Decimal total = 0;
int limit = 1000000;
for (int i = 0; i < limit; ++i)
{
total = total + (Decimal)Math.Sqrt(i);
}
timer.Stop();
Console.WriteLine(“Sum of sqrts: {0}”,total);
Console.WriteLine(“Elapsed milliseconds: {0}”,
timer.ElapsedMilliseconds);
Console.WriteLine(“Elapsed time: {0}”, timer.Elapsed);There are now special tools to detect the running time of the program, which can be refined down to each step. A method, such as dotNetPerformance software.
Taking the above code as an example, you need to modify the source code directly, which is a bit inconvenient if it is used to test the program. Please refer to the example below.
class AutoStopwatch : System.Diagnostics.Stopwatch, IDisposable
{
public AutoStopwatch()
{
Start();
}
public void Dispose()
{
Stop();
Console.WriteLine(“Elapsed: {0}”, this.Elapsed);
}
}With the help of using syntax, as shown in the code below, you can check the running time of a piece of code and print it on the console.
using (new AutoStopwatch())
{
Decimal total2 = 0;
int limit2 = 1000000;
for (int i = 0; i < limit2; ++i)
{
total2 = total2 + (Decimal)Math.Sqrt(i);
}
}
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