C# Split function problem

string value = "L3 ABCD L4 3501% L5 20%,L3 EFGH L4 1开发者_如何学编程7260% L5 20%,L3 IJKL L4 2051% L5 20%,L3 MNOP L4 2621% L5 20%,L3 QRST L4 45325% L5 20% L2 40%";

I am trying

string[] splitvalues = value.Split();

then using a switch to find out whether it is L2, L3, L4, L5

But value at L5 is fetching "20%,L3"

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The code is:

string[] splitvalues = value.Split();

for (int i = 0; i < splitvalues .Length; i = i + 2)
{
    String id = splitvalues [i];
    switch (id)
    {
        case "L3":
            Name = splitvalues [i + 1];
            break;
        case "L4":
            Number1.FromString(splitvalues [i + 1]);
            break;
        case "L5":
            Number2.FromString(splitvalues [i + 1]);
            break;
        case "L2":
            Number3.FromString(splitvalues [i + 1]);
            break;
    }
}

---

Try this:

string[] arr = value.Replace("," , " ").Split(' ');

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Split() without parameters splits string by space chars by default. If you want to split the string by other chars you should use overload that accepts list of separator characters:

string[] splitvalues = value.Split(' ', ',');

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Split() without any parameters only splits on Spaces, so splitValues[5] as '20%L3' is correct.

Can you clarify your question to describe what you want to achieve ?

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You're splitting on space, but you also have some commas in the string:

"L3 ABCD L4 3501% L5 20%,L3 EFGH L4 17260% L5 20%,L3 IJKL L4 2051% L5 20%,L3 MNOP L4 2621% L5 20%,L3 QRST L4 45325% L5 20% L2 40%"

Remove the commas and you should be good to go.

If you can't modify the string, then split on whitespace and commas.

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This looks like your data is supposed to be split twice, ',' appears to be your record seperator and ' ' appears to be your field seperator;

To use this data you probably want to use split the rows and then use a regex on the lines

Regex fieldRegex=new Regex("(?<key>.*?)\s(?<value>.*?)");
string value = "L3 ABCD L4 3501% L5 20%,L3 EFGH L4 17260% L5 20%,L3 IJKL L4 2051% L5 20%,L3 MNOP L4 2621% L5 20%,L3 QRST L4 45325% L5 20% L2 40%"; 
string[] lines= value.Split(',');
foreach (var line in lines) {
  matches=fieldRegex.Matches(line);
  foreach (var match in matches.OfType(Match)) {
     string key=match.Groups["key"].Value;
     string value=match.Groups["value"].Value;
     switch (key) {
       case "L3":  
          Name = value;
          break;  
       case "L4":  
          Number1.FromString(value);  
          break;  
      case "L5":  
          Number2.FromString(value);  
          break;  
      case "L2":  
          Number3.FromString(value);  
          break;  
     }  
  }
}

---

You can use regex L(\d+)\s([^,\s]+), e.g.:

var result =    
    Regex.Matches(input, @"L(\d+)\s([^,\s]+)").OfType<Match>()
    .ToDictionary(k => int.Parse(k.Groups[1].Value), v => v.Groups[2].Value);

---

Try like this

Add this in code

using System.Collections.Generic;;

program

        string value = "L3 ABCD L4 3501% L5 20%,L3 EFGH L4 17260% L5 20%,L3 IJKL L4 2051% L5 20%,L3 MNOP L4 2621% L5 20%,L3 QRST L4 45325% L5 20% L2 40%";
        string[] splitvalues = value.Split(',');
        List<string> outP = new List<string>();
        foreach (string s in splitvalues)
        {
            string[] innerSplit = s.Split();
            //use this 'innerSplit' variable for furture coding...
            outP.AddRange(innerSplit);
        }