How can I parse only the float number from the string?

Question

foreach (object item in listBox1.SelectedItems)
{
    string curItem = item.ToString();
    var parts = curItem.Split(\"{}XY=, \".ToCharArray(), StringSplitOptions.Remov         


        

Answer 1

try this

 foreach (object item in listBox1.SelectedItems)
        {
            string curItem = item.ToString();
            var parts = curItem.Split("{}XY=, ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
            var xCoord = CultureCheck(parts[0]);
            var yCoord = CultureCheck(parts[1]);
            var point = new PointF(xCoord, yCoord);
            CloudEnteringAlert.pointtocolor.Add(point);
            pictureBox1.Invalidate();
        }       


    private double CultureCheck(string input)
    {
        CultureInfo ci = (CultureInfo)CultureInfo.CurrentCulture.Clone();
        ci.NumberFormat.CurrencyDecimalSeparator = ".";
       return double.Parse(input, NumberStyles.Any, ci);
    }

Answer 2

You can simply extract the float from the string by using Regular Expressions:

string xCoord = Regex.Match(curItem, @"[-+]?[0-9]*\.?[0-9]+").Groups[1].Value;

After that, you can parse it to a float.

More info about regular expressions can be found here, or you could take a look at the Regex class page from MSDN.

Answer 3

Consider using regular expressions.

var match = Regex.Match(val, @"([-+]?[0-9]*\.?[0-9]+)");
if (match.Success)
  xCoord = Convert.ToSingle(match.Groups[1].Value);