public class Program
{
	public static void Main(string[] args)
	{
		new BenchmarkRunner().RunCompetition(new IL_Loops());
	}
}

public class IL_Loops
{
	[Params(1, 5, 10, 100)]
	int MaxCounter = 0;

	private int[] initialValuesArray;

	[Setup]
	public void SetupData()
	{
		initialValuesArray = Enumerable.Range(0, MaxCounter).ToArray();
	}

	[Benchmark]
	public int ForLoop()
	{
		var counter = 0;
		for (int i = 0; i < initialValuesArray.Length; i++)
			counter += initialValuesArray[i];
		return counter;
	}

	[Benchmark]
	public int ForEachArray()
	{
		var counter = 0;
		foreach (var i in initialValuesArray)
			counter += i;
		return counter;
	}
}

Result:

// ***** Competition: Start   *****
// Found benchmarks:
//   IL_Loops_ForEachArray_Throughput_HostPlatform_HostJit_NET-HostFramework -w=5 -t=10
//   IL_Loops_ForLoop_Throughput_HostPlatform_HostJit_NET-HostFramework -w=5 -t=10

// **************************
// Benchmark: IL_Loops_ForEachArray (Throughput_HostPlatform_HostJit_NET-HostFramework) [-w=5 -t=10]
// Generated project: C:\windows\system32\IL_Loops_ForEachArray_Throughput_HostPlatform_HostJit_NET-HostFramework

// Build:
// Program.cs(7,7): error CS1001: Identifier expected
// OverallResult = Failure

// **************************
// Benchmark: IL_Loops_ForLoop (Throughput_HostPlatform_HostJit_NET-HostFramework) [-w=5 -t=10]
// Generated project: C:\windows\system32\IL_Loops_ForLoop_Throughput_HostPlatform_HostJit_NET-HostFramework

// Build:
// Program.cs(7,7): error CS1001: Identifier expected
// OverallResult = Failure

// ***** Competition: Finish  *****

```ini
BenchmarkDotNet=v0.7.8.0
OS=Microsoft Windows NT 6.1.7601 Service Pack 1
Processor=Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz, ProcessorCount=4
HostCLR=MS.NET 4.0.30319.42000, Arch=32-bit 


6InvalidOperationException4 
Sequence contains no elements