how to find double code caracter in string

Question

I need to find the position of the double quotation mark (") character in a text that contains several.
I read the text with this command:
StreamReader fileRead = File.OpenText (@filepath)

How can I do?
Thanks in advance

Marco Dell'Oca

Answer 1

Hello @Marco Dell'Oca ,

This is one idea to loop through lines in the file (assuming you are reading lines in a file)

    var fileName = "TextFile1.txt";  
  
    if (!File.Exists(fileName))  
    {  
        return;  
    }  
  
    var counter = 0;  
  
    string line;  
  
    using (var file = new StreamReader("TextFile1.txt"))  
    {  
        while ((line = file.ReadLine()) != null)  
        {  
  
            counter++;  
  
            if (!line.Contains("\"")) continue;  
            var result = line  
                .Select((value, index) => new { item = value, position = index })  
                .Where(item => item.item == '\"')  
                .ToList();  
  
            if (result.Count <= 0) continue;  
            {  
                Console.WriteLine($"{line}");  
                foreach (var item in result)  
                {  
                    Console.WriteLine(item.position);  
                }  
            }  
        }  
         
    }  

Text file with sample data

Karen Payne  
Jim Jones  
Bob "Adams Frank"  
Bill Smith  
"Jane anne"  

Output

Bob "Adams Frank"  
4  
16  
"Jane anne"  
0  
10  

Answer 2

Many many thanks Karen,

that's exactly what I was looking for.

Thanks again

Marco Dell'Oca