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Hey Guys I have Problem I have a textbox who will have sometimes same lines now I need to count them and show the number in joined line with the text

What I have tried:

<pre>  private void textBox1_TextChanged(object sender, EventArgs e)
            string[] iste =textBox1.Text.Split(new string[] { Environment.NewLine }, StringSplitOptions.None).Distinct().ToArray();
            textBox1.Text = string.Join("\r\n", iste);

in this code it will join the lines and I am able to see just one line but I need a count of lines and if I have some number in that line to count that also
for example:
1.Earth 2

Expected :

1.Earth x2 4
Updated 27-Mar-21 13:15pm
Gerry Schmitz 26-Mar-21 14:50pm
Use a Dictionary<string,int>; the string is the word or phrase, the int is the "count".
BillWoodruff 27-Mar-21 18:14pm
Where does the data (lines) come from ? Do you have any control over its format ?
Kleo Rogers 27-Mar-21 18:32pm
They are coming from buttons so yes I have
BillWoodruff 27-Mar-21 18:36pm
see reply below

1 solution

For every possible variation in line format, you have to create a parsing strategy; so, anything you can do to control/simplify/regularize the format is valuable. Consider:
private char[] lnsplitchars = new char[] { '.', ' '};

// note absence of error checking 'real-world code' should have !

private void btnParseLines_Click(object sender, EventArgs e)
    foreach (string line in textBox1.Lines)
        string[] lnsplit = line.Split(splitchars, StringSplitOptions.RemoveEmptyEntries);

        int id = Int32.Parse(lnsplit[0]);

        string text = lnsplit[1];

        int ndups = 0;

        if (lnsplit.Length == 3)
            ndups = Int32.Parse(lnsplit[2]);
        // process line data
The real work begins with you formulating a clear strategy on transforming the parsed lines: you attempt that, and show your code.

Perhaps you will need to create an intermediate data structure ... like an Array of Arrays ... to hold the parsed line data; and/or use Linq 'GroupBy to organize duplicates.

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