C# – Process a list with a loop, taking 100 elements each time and automatically less than 100 at the end of the list

c++listloopsrange

Is there a way to use a loop that takes the first 100 items in a big list, does something with them, then the next 100 etc but when it is nearing the end it automatically shortens the "100" step to the items remaining.

Currently I have to use two if loops:

for (int i = 0; i < listLength; i = i + 100)
{
    if (i + 100 < listLength)
    {
        //Does its thing with a bigList.GetRange(i, 100)
    }
    else
    {
        //Does the same thing with bigList.GetRange(i, listLength - i)
    }
}

Is there a better way of doing this? If not I will at least make the "thing" a function so the code does not have to be copied twice.

Best Solution

You can make use of LINQ Skip and Take and your code will be cleaner.

for (int i = 0; i < listLength; i=i+100)
{
    var items = bigList.Skip(i).Take(100); 
    // Do something with 100 or remaining items
}

Note: If the items are less than 100 Take would give you the remaining ones.