How to split a string with non-numbers as delimiter?

Question

I want to split a string in C#. It should split on the basis of a text in the string.Like i have a string "41sugar1100" , i want to split on the base of text in it that is "sugar".How can i do this ?

NOTE: Without passing "sugar" directly as a delimiter.Because text can be change in next iteration.Means wherever it finds text in the string, it should split on the basis of that text.

Answer 1

Use Regex.Split:

string input = "44sugar1100";
string pattern = "[a-zA-Z]+";            // Split on any group of letters

string[] substrings = Regex.Split(input, pattern);
foreach (string match in substrings)
{
    Console.WriteLine("'{0}'", match);
}

Answer 2

char[] array = "41sugar1100".ToCharArray();
StringBuilder sb = new StringBuilder();

// Append letters and special char '#' when original char is a number to split later
foreach (char c in array)
    sb.Append(Char.IsNumber(c) ? c : '#');

// Split on special char '#' and remove empty string items
string[] items = sb.ToString().Split('#').Where(s => s != string.Empty).ToArray();

foreach (string item in items)
    Console.WriteLine(item);

// Output:  
// 41  
// 1100