C# TextBox values to x string array

I have a textbox with the following values : 4,5,6,7,8,9,10,11,12,13,15
I want these values to be split into `x` string arrays with `y` values in each array.

For example extract into 3 arrays with 4 numbers in each :

int x = 3;
string[] batch;

batch[0] = "4,5,6,7"
batch[1] = "8,9,10,11"
batch[2] = "12,13,15"

For example extract into 5 arrays with 2 numbers in each :
int x = 5;
string[] batch;

batch[0] = "4,5"
batch[1] = "6,7"
batch[2] = "8,9"
batch[3] = "10,11"
batch[4] = "12,13"
batch[5] = "15"

I've tried Regex.split but I can't get it done... Please help

This is easy.

Just use the string.split method (use comma ',' for split character) and
split the string into an array of chars, first.

Then iterate over your array and pick up and resort your characters into other arrays.

You could do something like this (typed in notepad from the head so copy pasting into VS does'nt work)


string[] splitted = Textbox1.Text.split(',');
ArrayList al = new ArrayList();
StringBuilder tempString = new StringBuilder();
int count = 1;

foreach (string s in splitted)
{
tempString.Append(s + ",");

if (count == 2)
{
al.add(tempString.ToString());
tempString.Clear() //or something
count = 0;
}
else
{
count++;
}
}

Then use al.ToArray() to create the array.