reading values from strings

[SoftwareTester]

In memory I have a string containing numbers (ushorts) I want to read into an array.

Example :
string Line = " 1 12 15 12 8 21 ";
ushort[] Numbers = new ushort[6];

I want :
Numbers[0] = 1
Numbers[1] =12
Numbers[2] =15
Numbers[3] = 12
Numbers[4] = 8
Numbers[5] =21

How can I do that?

[babai28]

try this code:

try
            {
                ushort num;
                int counter=-1;
                string line = "1 12 15 12 8 21";
                string[] str = line.Split(' ');
                ushort[] Numbers = new ushort[str.Length];
                foreach(string piece in str)
                {
                    counter++;
                    if (UInt16.TryParse(piece, out num))
                    {
                        Numbers[counter]=num;
                    }
                }
 
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

However mind the following words of caution:
While accessing the array Numbers you have to first check if the array element contain a value or not.
For example, if you supple the string line as " 2 3 f 4 5"
The Number array will have values like
Numbers[0] = 2
Numbers[1] =3
Numbers[2] =null
Numbers[3] = 4
Numbers[4] = 5

By slightly changing the code, however, you can avoid this problem. Also you can provide a check like:

if(Numbers[i].ToString()==String.Empty)

All the best,

[vekipeki]

You should start with String.Split, but try to do the rest yourself.

[SoftwareTester]

Somewhere I read about regular expressions and (based upon what I read) I managed to get this working:

    using System.Text.RegularExpressions;
 
                            Regex Spaces = new Regex(@"\s+");
                            string[] Fields = Spaces.Split(Line.Trim());
                            if (Fields != null)
                            {
                                int Count = Fields.Length;
                                ushort[] Numbers = new ushort[Count];
                                for (int i=0; i<Count; i++)
                               {
                                   Numbers[i] = ushort.Parse(Fields[i]);
                               }
                           }
 
 

it takes care of tabs as well.

Although it has been a long time ago I have been using FORTRAN-77 (and because of that not totally sure about the EXACT syntax anymore) making it possible to read

DIMENSION NUMBERS(6)
Read(Line,'(BN,I2)', Numbers)
 

being just ONE line (part of the language!!) for reading numbers from a string instead of a whole function to write...........

[vekipeki]

I guess you can make one long line out of it, to simplify it:

int[] Numbers = new List<int>(
    new List<String>(Line.Split(' ','\t'))
    .FindAll(delegate(string token)
      { return !string.IsNullOrEmpty(token); })
    .ConvertAll<int>(delegate(string token)
      { return int.Parse(token); })
    ).ToArray();

"To simplify it" - yeah right!

Just kidding :)

[kunal pawar]

I think "String.Split" is best solution as suggested by vekipeki

[SoftwareTester]

Thanks,

I'll test which one is fastest and put that one into a function