How to set condition in for loop?

Question

This is my code

private void AddToDataTable(int j, bool condition)
{
  for (int i = j; condition; j++ )
  {
    //do something
  }
}

How do I declare the condition so that I can pass it to the for loop condition or how do I do it? My idea is to pass or change the condition to dataGridView.Rows.Count > i or i % 3 !=0.

Answer 1

You can declare the method to accept Func<int,bool> condition, instead of bool condition

You can also consider defining a delegate for the counter behavior - whether it's i++ or i-- for example:

public delegate void Counter(ref int i);

so the method looks like this:

private void AddToDataTable(int j, Func<int, bool> condition, Counter counter) {
    for (int i = j; condition(i); counter(ref i)) {
        Console.WriteLine(i);
    }
}

Use would be:

AddToDataTable(0, i => i <= 9, (ref int i) => i++);
Console.WriteLine("----");
AddToDataTable(9, i => i >= 0, (ref int i) => i--);

Output:

0
1
2
3
4
5
6
7
8
9
----
9
8
7
6
5
4
3
2
1
0