Going to the end of a substring in c#

The comment // go to end, I can't figure out how to cleanly end the substring :(
Is there a simpler way to go to the end of the substring rather than mathing out the number by myself? For more complex strings this would be too hard

        string word = Console.ReadLine();

        string lines = File.ReadAllLines(file);

        using (var far = File.CreateText(resultfile))

        {

            foreach (string line in lines)

            {

                StringBuilder NewL = new StringBuilder();

                int ind = line.IndexOf(word);

                if (ind >= 0)

                {

                    if (ind == 0)

                    {

                        NewL.Append(line.Substring(ind+ word.Length +1, // go to end);

                    }else{

                    NewL.Append(line.Substring(0, ind - 1));

                    NewL.Append(line.Substring(ind + word.Length + 1, // go to end));}

                    far.WriteLine(NewL);

                }

                else

                {

                    far.WriteLine(line);

                }



            }

I don't know what more details the stackoverflow wants, anyone who can answer this pretty sure can clearly understand this simple code anyways.

asked Nov 22 '18 at 21:58

S.Kikk

Are you just trying to remove a certain word from the input lines loaded from a file and then rewrite the lines?

– Steve
Nov 22 '18 at 22:04

add a comment |

        string word = Console.ReadLine();

        string lines = File.ReadAllLines(file);

        using (var far = File.CreateText(resultfile))

        {

            foreach (string line in lines)

            {

                StringBuilder NewL = new StringBuilder();

                int ind = line.IndexOf(word);

                if (ind >= 0)

                {

                    if (ind == 0)

                    {

                        NewL.Append(line.Substring(ind+ word.Length +1, // go to end);

                    }else{

                    NewL.Append(line.Substring(0, ind - 1));

                    NewL.Append(line.Substring(ind + word.Length + 1, // go to end));}

                    far.WriteLine(NewL);

                }

                else

                {

                    far.WriteLine(line);

                }



            }

I don't know what more details the stackoverflow wants, anyone who can answer this pretty sure can clearly understand this simple code anyways.

asked Nov 22 '18 at 21:58

S.Kikk

Are you just trying to remove a certain word from the input lines loaded from a file and then rewrite the lines?

– Steve
Nov 22 '18 at 22:04

add a comment |

        string word = Console.ReadLine();

        string lines = File.ReadAllLines(file);

        using (var far = File.CreateText(resultfile))

        {

            foreach (string line in lines)

            {

                StringBuilder NewL = new StringBuilder();

                int ind = line.IndexOf(word);

                if (ind >= 0)

                {

                    if (ind == 0)

                    {

                        NewL.Append(line.Substring(ind+ word.Length +1, // go to end);

                    }else{

                    NewL.Append(line.Substring(0, ind - 1));

                    NewL.Append(line.Substring(ind + word.Length + 1, // go to end));}

                    far.WriteLine(NewL);

                }

                else

                {

                    far.WriteLine(line);

                }



            }

I don't know what more details the stackoverflow wants, anyone who can answer this pretty sure can clearly understand this simple code anyways.

asked Nov 22 '18 at 21:58

S.Kikk

        string word = Console.ReadLine();

        string lines = File.ReadAllLines(file);

        using (var far = File.CreateText(resultfile))

        {

            foreach (string line in lines)

            {

                StringBuilder NewL = new StringBuilder();

                int ind = line.IndexOf(word);

                if (ind >= 0)

                {

                    if (ind == 0)

                    {

                        NewL.Append(line.Substring(ind+ word.Length +1, // go to end);

                    }else{

                    NewL.Append(line.Substring(0, ind - 1));

                    NewL.Append(line.Substring(ind + word.Length + 1, // go to end));}

                    far.WriteLine(NewL);

                }

                else

                {

                    far.WriteLine(line);

                }



            }

I don't know what more details the stackoverflow wants, anyone who can answer this pretty sure can clearly understand this simple code anyways.

c# string substring

asked Nov 22 '18 at 21:58

S.Kikk

asked Nov 22 '18 at 21:58

S.Kikk

asked Nov 22 '18 at 21:58

S.Kikk

asked Nov 22 '18 at 21:58

S.Kikk

asked Nov 22 '18 at 21:58

S.Kikk

Are you just trying to remove a certain word from the input lines loaded from a file and then rewrite the lines?

– Steve
Nov 22 '18 at 22:04

add a comment |

Are you just trying to remove a certain word from the input lines loaded from a file and then rewrite the lines?

– Steve
Nov 22 '18 at 22:04

Are you just trying to remove a certain word from the input lines loaded from a file and then rewrite the lines?

– Steve
Nov 22 '18 at 22:04

add a comment |

2 Answers
2

active

oldest

votes

You can use the String.Substring(int) overload, which automatically continues to the end of the source string:

NewL.Append(line.Substring(ind + word.Length + 1));

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

I tried this before , but didn't notice that I forgot a " ) " at the end ... Thanks

– S.Kikk
Nov 22 '18 at 22:07

add a comment |

It seems to me that you are just trying to remove a certain word from the loaded lines. If this is your task then you can simply replace the word with an empty string

foreach (string line in lines)

{

    string newLine = line.Replace(word, "");

    far.WriteLine(newLine);

}

Or even without an explicit loop with a bit of Linq

var result = lines.Select(x = x.Replace(word,""));

File.WriteAllLines("yourFile.txt", result);

Or, given the requirement to match an additional character after the word you can solve it with Regex.

Regex r = new Regex(word + ".");

var result = lines.Select(x => r.Replace(x, ""));

File.WriteAllLines("yourFile.txt", result);

edited Nov 22 '18 at 22:19

answered Nov 22 '18 at 22:07

Steve

182k16157221

Have to replace word + 1 character after it with nothing

– S.Kikk
Nov 22 '18 at 22:11

I see, then perhaps Regex could help.

– Steve
Nov 22 '18 at 22:12

Yeah I already finished this with Regex, but trying to see if it's possible for me to do without it. Thanks

– S.Kikk
Nov 22 '18 at 22:18

add a comment |

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2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

You can use the String.Substring(int) overload, which automatically continues to the end of the source string:

NewL.Append(line.Substring(ind + word.Length + 1));

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

I tried this before , but didn't notice that I forgot a " ) " at the end ... Thanks

– S.Kikk
Nov 22 '18 at 22:07

add a comment |

You can use the String.Substring(int) overload, which automatically continues to the end of the source string:

NewL.Append(line.Substring(ind + word.Length + 1));

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

I tried this before , but didn't notice that I forgot a " ) " at the end ... Thanks

– S.Kikk
Nov 22 '18 at 22:07

add a comment |

You can use the String.Substring(int) overload, which automatically continues to the end of the source string:

NewL.Append(line.Substring(ind + word.Length + 1));

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

You can use the String.Substring(int) overload, which automatically continues to the end of the source string:

NewL.Append(line.Substring(ind + word.Length + 1));

Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

answered Nov 22 '18 at 22:02

Douglas

43.2k689138

I tried this before , but didn't notice that I forgot a " ) " at the end ... Thanks

– S.Kikk
Nov 22 '18 at 22:07

add a comment |

I tried this before , but didn't notice that I forgot a " ) " at the end ... Thanks

– S.Kikk
Nov 22 '18 at 22:07

I tried this before , but didn't notice that I forgot a " ) " at the end ... Thanks

– S.Kikk
Nov 22 '18 at 22:07

add a comment |

It seems to me that you are just trying to remove a certain word from the loaded lines. If this is your task then you can simply replace the word with an empty string

foreach (string line in lines)

{

    string newLine = line.Replace(word, "");

    far.WriteLine(newLine);

}

Or even without an explicit loop with a bit of Linq

var result = lines.Select(x = x.Replace(word,""));

File.WriteAllLines("yourFile.txt", result);

Or, given the requirement to match an additional character after the word you can solve it with Regex.

Regex r = new Regex(word + ".");

var result = lines.Select(x => r.Replace(x, ""));

File.WriteAllLines("yourFile.txt", result);

edited Nov 22 '18 at 22:19

answered Nov 22 '18 at 22:07

Steve

182k16157221

Have to replace word + 1 character after it with nothing

– S.Kikk
Nov 22 '18 at 22:11

I see, then perhaps Regex could help.

– Steve
Nov 22 '18 at 22:12

Yeah I already finished this with Regex, but trying to see if it's possible for me to do without it. Thanks

– S.Kikk
Nov 22 '18 at 22:18

add a comment |

It seems to me that you are just trying to remove a certain word from the loaded lines. If this is your task then you can simply replace the word with an empty string

foreach (string line in lines)

{

    string newLine = line.Replace(word, "");

    far.WriteLine(newLine);

}

Or even without an explicit loop with a bit of Linq

var result = lines.Select(x = x.Replace(word,""));

File.WriteAllLines("yourFile.txt", result);

Or, given the requirement to match an additional character after the word you can solve it with Regex.

Regex r = new Regex(word + ".");

var result = lines.Select(x => r.Replace(x, ""));

File.WriteAllLines("yourFile.txt", result);

edited Nov 22 '18 at 22:19

answered Nov 22 '18 at 22:07

Steve

182k16157221

Have to replace word + 1 character after it with nothing

– S.Kikk
Nov 22 '18 at 22:11

I see, then perhaps Regex could help.

– Steve
Nov 22 '18 at 22:12

Yeah I already finished this with Regex, but trying to see if it's possible for me to do without it. Thanks

– S.Kikk
Nov 22 '18 at 22:18

add a comment |

It seems to me that you are just trying to remove a certain word from the loaded lines. If this is your task then you can simply replace the word with an empty string

foreach (string line in lines)

{

    string newLine = line.Replace(word, "");

    far.WriteLine(newLine);

}

Or even without an explicit loop with a bit of Linq

var result = lines.Select(x = x.Replace(word,""));

File.WriteAllLines("yourFile.txt", result);

Or, given the requirement to match an additional character after the word you can solve it with Regex.

Regex r = new Regex(word + ".");

var result = lines.Select(x => r.Replace(x, ""));

File.WriteAllLines("yourFile.txt", result);

edited Nov 22 '18 at 22:19

answered Nov 22 '18 at 22:07

Steve

182k16157221

It seems to me that you are just trying to remove a certain word from the loaded lines. If this is your task then you can simply replace the word with an empty string

foreach (string line in lines)

{

    string newLine = line.Replace(word, "");

    far.WriteLine(newLine);

}

Or even without an explicit loop with a bit of Linq

var result = lines.Select(x = x.Replace(word,""));

File.WriteAllLines("yourFile.txt", result);

Or, given the requirement to match an additional character after the word you can solve it with Regex.

Regex r = new Regex(word + ".");

var result = lines.Select(x => r.Replace(x, ""));

File.WriteAllLines("yourFile.txt", result);

edited Nov 22 '18 at 22:19

answered Nov 22 '18 at 22:07

Steve

182k16157221

edited Nov 22 '18 at 22:19

answered Nov 22 '18 at 22:07

Steve

182k16157221

answered Nov 22 '18 at 22:07

Steve

182k16157221

answered Nov 22 '18 at 22:07

Steve

182k16157221

Have to replace word + 1 character after it with nothing

– S.Kikk
Nov 22 '18 at 22:11

I see, then perhaps Regex could help.

– Steve
Nov 22 '18 at 22:12

Yeah I already finished this with Regex, but trying to see if it's possible for me to do without it. Thanks

– S.Kikk
Nov 22 '18 at 22:18

add a comment |

Have to replace word + 1 character after it with nothing

– S.Kikk
Nov 22 '18 at 22:11

I see, then perhaps Regex could help.

– Steve
Nov 22 '18 at 22:12

Yeah I already finished this with Regex, but trying to see if it's possible for me to do without it. Thanks

– S.Kikk
Nov 22 '18 at 22:18

Have to replace word + 1 character after it with nothing

– S.Kikk
Nov 22 '18 at 22:11

I see, then perhaps Regex could help.

– Steve
Nov 22 '18 at 22:12

Yeah I already finished this with Regex, but trying to see if it's possible for me to do without it. Thanks

– S.Kikk
Nov 22 '18 at 22:18

add a comment |

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