如何使用文本文件检查密码是否与 c# 中的用户名匹配？

Question

我是一名刚开始学习C#的学生，我想知道如何检查密码是否与文本文件中的用户名匹配。

static void CheckExist()
        { 
            Console.WriteLine("Enter username: ");  //ask the user for the username and store in a variable 
            string EuserName = Console.ReadLine();
            Console.WriteLine("Enter password: "); //ask the user for the password and store in a variable 
            string EpassWord = Console.ReadLine();

            string [] lines = File.ReadAllLines(filename);  //read all lines of the file into an array
            bool UserExist = false;  //declares a Boolean variable to track if the user/password exists
            string[] x;

            foreach (string i in lines)//foreach string in the array
            {
                x = i.Split(","); //split the line on comma and store in an array X
                if (x[0] == EuserName && x[2] == EpassWord)  //if x index 0 equals the username and x index 2 equals the password
                {
                    UserExist = true; // user exists, set the Boolean variable and exit loop
                    break;
                }
            } //end of loop 
            if (UserExist == false)
            {
                Console.WriteLine("User doesn't exist");
            }

            //if the Boolean variable is still false the user didn't exist, otherwise they did

        }

这是更新后的代码，证明有效

Answer 1

执行以下逻辑：

//ask the user for the username and store in a variable 
//ask the user for the password and store in a variable 

//read all lines of the file into an array

//declare a Boolean variable to track if the user/password exists

//foreach string in the array

  //split the line on comma and store in an array X

  //if x index 0 equals the username and x index 2 equals the password

    // user exists, set the Boolean variable and exit loop

//end of loop 

//if the Boolean variable is still false the user didn't exist, otherwise they did

这是您在编码时应该做的：用您认为的语言写出逻辑，然后将其翻译成 C#。从您问题中的代码中，您已经知道如何执行上述所有操作

如何使用文本文件检查密码是否与 c# 中的用户名匹配？

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