How to convert foreach to parallel for each

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In the following z contains two list of objects

How i can accomplish this

What I have tried:

C#

z{
list<row>
list<yy>
}
foreach(var y in z)
                           {
                                DataRow oldRow = y.row;
                                oldRow.SetField<string>("AMOUNT", y.yy.Value);
                           }

Posted 6-Mar-16 23:45pm

MYQueries1

Updated 7-Mar-16 0:29am

Maciej Los

v3

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Manas_Kumar · Answer 1 · 2016-03-07T00:29:00

Parallelism can be accomplish in two ways

1. Parallel class
2. PLINQ (Parallel LINQ)

Here is the code using Parallel class:

C#

string[] lines = File.ReadAllLines("filePath");
List<string> listLines = new List<string>(lines);
Parallel.ForEach(listLines, line =>
{
    //Your stuff
	callMethod(line);
});
</string></string>

Don't choose blindly to choose Parallel class to loop over a list otherwise it may throw you performance overhead. Use Parallel class when you have following requirement:

Execution takes place in parallel way.
Parallel.ForEach uses multiple Threads.
Parallel.ForEach is defined in .Net 4.0 and above frameworks.
Execution is faster.

Note: In your if you are not performing any action then there is no need to use Parallel class. If you see my example it is calling the method inside the loop so it suits the requirement.