C# (Mono) – Reading and writing to a text file
File access is made simple with C# (Mono) on FreeBSD.
Reading a text file with C# (Mono)
To read a file, use a StreamReader object. However, it is easy if you don’t do a new StreamWriter("File.txt") but instead use File.OpenText("File.txt") to create the StreamReader. Once you have the stream, you just need to run the stream’s ReadToEnd() function.
Here is a snippet to read a text file as a string.
1 2 3 4 | // Open the file into a StreamReaderStreamReader file = File.OpenText("SomeFile.txt");// Read the file into a stringstring s = file.ReadToEnd(); |
Now that you have the text file as a string, you can manipulate the string as you desire.
Writing to a text file with C# (Mono)
To write a text file, use StreamWriter.
1 2 3 4 5 | string str = "Some text";// Hook a write to the text file.StreamWriter writer = new StreamWriter("SomeFile.txt");// Rewrite the entire value of s to the filewriter.Write(str); |
You can also just add a line to the end of the file as follows:
1 2 3 4 5 | string str = "Some text";// Hook a write to the text file.StreamWriter writer = new StreamWriter("SomeFile.txt");// Rewrite the entire value of s to the filewriter.WriteLine(str); |
Example for learning
An example of these in a little project file made with MonoDevelop.
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | using System;using System.IO;namespace FileAccess{ class MainClass { public static void Main (string[] args) { string FileName="TestFile.txt"; // Open the file into a StreamReader StreamReader file = File.OpenText(FileName); // Read the file into a string string s = file.ReadToEnd(); // Close the file so it can be accessed again. file.Close(); // Add a line to the text s += "A new line.\n"; // Hook a write to the text file. StreamWriter writer = new StreamWriter(FileName); // Rewrite the entire value of s to the file writer.Write(s); // Add a single line writer.WriteLine("Add a single line."); // Close the writer writer.Close(); } }} |
Well, this should get you started.
اخبار تامین اجتماعی شرق تهران و خبرهای فوری فارس و اخبار
ورزشی زنده فوتبال و معلومات های مفید و دانستنی های
یک مهندس عمران و خبرهای جدید ذبیح الله مجاهد
https://bookmarklogin.com/story13597682/اخبار-ورزشی-بانوان-شبکه-۳
I should update this to use the using keyword.
publicstaticstringReadEntireFile(stringinFile){stringfileAsString =string.Empty;// Open the file into a StreamReaderusing(StreamReader file = File.OpenText(inFile)){// Read the file into a stringfileAsString = file.ReadToEnd();}// Return the stringreturnfileAsString;}i had a "New.txt" file in c folder.I mentioned the path of that file at string FileName="C:/programfiles/New.txt". after executing that i am not getting the text in that file>how can i get that text read and displays it on the output window?Can anyone explain please
i guess the ".txt" file will normally export to the "Debug" folder where the path is "...\bin\Debug"
Hey,
Thanks for the short quid.
i wanted where shell i place the txt file because mine wont find it and if its possible to export the info of a txt file to mysql.
thanks in advanced
Your Example for learning is MUCH faster this way. You don't need to read the entire file into a variable in memory to append text to it.
https://gist.github.com/1683548
I know...but the example is supposed to show both reading and writing.