从下拉列表中删除字符到字符串

Question

I am trying to remove stuff from specific text to grab a value.

Here is an example of the data in the dropdownlist:

665057 BC LTD / KX WHEELS -- 5380239 -- 
ABRAHAM CHEVROLET MIAMI INC -- 6574754 -- 
AC COLLINS FORD -- 418426 -- 
ACCESS FORD LTD -- 2322732 -- 
ACCESSOR-EASE -- 5809346 -- 

All I want to grab is the number for example:

5380239

from

665057 BC LTD / KX WHEELS -- 5380239 --

How would I do this?

Something like last index of? and before --?

Answer 1

List (int) nValues = new List(int)()
foreach item in DropDownList.Items 
{
    nValues.Add(Int32.Parse(item.Split("--")[1].Trim()))
}

// Do something with the values

...ish. My C#'s a little rusty.

Answer 2

I've created a fiddle to demonstrate.

var list = new List<string>();
list.Add("665057 BC LTD / KX WHEELS -- 5380239 -- ");       
list.Add("ABRAHAM CHEVROLET MIAMI INC -- 6574754 -- ");
list.Add("AC COLLINS FORD -- 418426 -- ");
list.Add("ACCESS FORD LTD -- 2322732 -- ");
list.Add("ACCESSOR-EASE -- 5809346 --");

var numbers = list.Select(e => e.Split(new [] {" --"}, StringSplitOptions.RemoveEmptyEntries)[1].Trim());
foreach(var num in numbers)
    Console.WriteLine(num);

Or if you wanted to do it with Regex:

string pattern = "(.*)(-- )(.*)( --)";
Regex r1 = new Regex(pattern);

foreach (string s in list)
{
    Match match = r1.Match(s);
    if (match.Success)
    {
        string v = match.Groups[3].Value;
        Console.WriteLine("Number: {0}", v);
    }
}

Regex fiddle