Reading a text file by Line Numbers and ignoring Lines starting with "i" character.

Question

Hey there,

I was trying to make txt file reader.

which Reads the text file by Line Numbers and ignoring Lines starting with a specific character such as "i".

Is there any good example or tutorial for this?

I have just done this code yet It can only read Text from their character numbers but it can't ignore lines.

^{using System;}

^{using System.IO;}

^{public class CharsFromStr}

^{

    ^{public static void Main()}

    ^{

        ^{// Create a string to read characters from.}

        ^{string str = "Some number of characters";}

        ^{// Make a char array the size of the source string}

        ^{char[] b = new char[str.Length];}

        ^{// Create an instance of StringReader and attach it to the string.}

        ^{StringReader sr = new StringReader(str);}

        ^{// Read 13 characters into the array that holds the string,}

        ^{// starting at the third array member.}

        ^{sr.Read(b, 0, 13);}

        ^{// Display the output.}

        ^{Console.WriteLine(b);}

        ^{// Read the rest of the string from the current position in the}

        ^{// source string into the array, starting at the 6th array member.}

        ^{sr.Read(b, 5, str.Length- 13);}

        ^{// Display the output.}

        ^{Console.WriteLine(b);} 

        ^{string str1 = "1.000000 -1.000000 -1.000000";}

        ^{char[] v1 = new char[str1.Length];}

        ^{char[] v2 = new char[str1.Length];}

        ^{char[] v3 = new char[str1.Length];}

        ^{StringReader sr1 = new StringReader(str1);}

        ^{sr1.Read(v1, 0, 9);}

        ^{Console.WriteLine(v1);}

        ^{sr1.Read(v2, 0, 18-9);}

        ^{// Display the output.}

        ^{Console.WriteLine(v2);}

        ^{sr1.Read(v3, 0, 27-9);}

        ^{// Display the output.}

        ^{Console.WriteLine(v3);} 

        ^{// Close the StringReader.}

        ^sr.Close();

        ^{Console.ReadLine();}

    ^}

^}