CODEWITHSUNDEEP
c#
priti kokate
priti kokate

Reputation: 11

c# code to check string values in line from text file

like : Gpu 0x00000100 g0 c670 4h 8w h0 ON h1 -- h2 -- h3 --

I want to check string after h0,h1,h2 and h3 is ON or not

here is my code :

foreach (string line in lines)
{
    string find = "h0";

    if (line.Contains(find))
    {
        //int i = line.IndexOf(find);
        //string authorName = line.Substring(i, i + );
        Console.WriteLine(line);

        string[] authorInfo = line.Split(' ');
        foreach (string info in authorInfo)
        { 
            int i = 0;
            Console.WriteLine("   {0}", info.Substring(info.IndexOf(": ") + 1));
            if(info.Substring(info.IndexOf(": ")+1)=="h0")
            {
                Console.WriteLine(" {0}", info.Substring(info.IndexOf(": ") + 2));
            }
        }

Upvotes: 1

Views: 98

Answers (2)

Caius Jard
Caius Jard

Reputation: 74605

If you're using a modern c#, you can use String split that takes an array of strings to split on

string x = "Gpu 0x00000100 g0 c670 4h 8w h0 ON h1 -- h2 -- h3 --";
var seps = new[]{" h0 "," h1 "," h2 "," h3 "};

var bits = x.Split(seps, StringSplitOptions.None);

Also with your modern c# you can use the "indices and ranges" feature to easily get the last elements of the array:

var h0 = bits[^4];
var h1 = bits[^3];
var h2 = bits[^2];
var h3 = bits[^1];

Think of the ^ character as being replaced by bits.Length-, therefore in an array of length 10, bits[^1] is like bits[bits.Length-1] ie index 9, the last in the array

If your c# is older and doesn't support this syntax you can still use bits[bits.Length-1] etc

You could also get the results as another array rather than separate variables, again using ranges

var hs = bits[^4..];

hs is an array, with the h0 value in hs[0] and so on

You could use a bit of LINQ for a one liner:

x.Split(seps, StringSplitOptions.None).Reverse().Take(4).Reverse().ToArray()

but it wouldn't be as efficient

Upvotes: 1

Michael
Michael

Reputation: 1276

You can use a regular expression to find h[0-9] followed by the state (ON or --): (h[0-9]+) ((ON|--)). This can be done with System.Text.RegularExpressions.Regex:

string line = "Gpu 0x00000100 g0 c670 4h 8w h0 ON h1 -- h2 -- h3 --";
var matches = System.Text.RegularExpressions.Regex.Matches(line, @" (?<variable>h[0-9]+) (?<state>(ON|--))");
foreach (System.Text.RegularExpressions.Match m in matches)
{
    Console.WriteLine($"{m.Groups["variable"].Value} is {m.Groups["state"].Value}");
}

Output:

h0 is ON
h1 is --
h2 is --
h3 is --

Upvotes: 4

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