How to split a string to two separte variable

I am not a coder or an expert to ask a good question about C# , I am just presenting how I understand on how to split this string IMG10001 to became separate string or field on C # code.
 

field1 = IMG1
field2 = 0001

 
Ah! That makes a bit more sense. There are a large number of ways to do it, depending on the data you are dealing with. If it is fixed length - always 3 alphabetic followed by a bunch of numeris, then use the String.Substring method:

            string inp = "IMG0001";
            string prefix = inp.Substring(0, 3);
            string suffix = inp.Substring(3);

Alternatively, if the data can vary in length, then a simple Regex would do it:

            Regex reg = new Regex(@"(?<prefix>[A-Za-z]+)(?<suffix>\d+)");
            Match m = reg.Match(inp);
            if (m.Success)
                {
                prefix = m.Groups["Prefix"].Value;
                suffix = m.Groups["Suffix"].Value;
                }</suffix></prefix>