How to match the first occurrence of a character and split it

Question

I have a text file from which I want to store Keys and Values in a String array.

In this case, Key is something like &

Answer 1

On this way you can read each line of the text file. You fill the json with Key = until the ":" Value= From the ":"

Dictionary yourDictionary = new Dictionary();
string pathF = "C:\\fich.txt";
StreamReader file = new StreamReader(pathF, Encoding.Default);
string step = "";
List stream = new List();
while ((step = file.ReadLine()) != null)
{
    if (!string.IsNullOrEmpty(step))
    {
        yourDictionary.Add(step.Substring(0, step.IndexOf(':')), step.Substring(step.IndexOf(':') + 1));
    }
}