如何从 c# 中的文本文件中读取特定的 UNPREDICTED 字符串

Question

So I Have a.txt file that its content is like:

A = RANDOM STRING DETERMINED BY THE USER

B = RANDOM STRING DETERMINED BY THE USER

C = RANDOM STRING DETERMINED BY THE USER

And want to get the string after "A = " + "B = " + "C = ".

But also keep in mind that each string is RANDOM, so to get them you'll have to get' the string " A , B , C = " and then the string that is next to it would be the RANDOM UNPREDICTED string.

Answer 1

Solution:

string path = @"E:\1.txt";
string[] lines = File.ReadAllLines(path);
var result = lines.Select(s => s.Substring(4));

// Usage:
foreach (var s in result)
    Console.WriteLine(s);

// Output:
// 1234567
// 7854963
// aoeuidh

1.txt:

A = 1234567
B = 7854963
C = aoeuidh

---

Description:

• File.ReadAllLines Method:Opens a text file, reads all lines of the file into a string array, and then closes the file.

• Enumerable.Select Method: Projects each element of a sequence into a new form.

• String.Substring(Int32) Method: Retrieves a substring from this instance. The substring starts at a specified character position and continues to the end of the string.

Do not forget using System.Linq; and using System.IO; .