このコード:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
namespace WindowsFormsApplication2
{
public partial class Form2 : Form
{
private void Form2_Load(object sender, EventArgs e)
{
pictureBox2.SizeMode = PictureBoxSizeMode.Zoom;
}
public Form2()
{
InitializeComponent();
}
public bool radioButtons()
{
if (!userRadioButton.Checked && !adminRadioButton.Checked)
{
MessageBox.Show("You must select an account type");
return false;
}
else
{
return true;
}
}
public void button1_Click(object sender, EventArgs e)
{
bool a = radioButtons();
if (a == true)
{
string userName = userNameBox.Text;
string password = passwordBox.Text;
if (checkUsernameValid() && checkUsernameNotExist() && checkPasswordsValid() && checkPasswordsMatch())
{
allOK();
}
}
}
public void mySW()
{
string path = @"C:\Other\myFile.txt";
string userName = userNameBox.Text;
string password = passwordBox.Text;
using (StreamWriter writer = new StreamWriter(path, true))
{
writer.WriteLine(userName+" "+password);
writer.WriteLine();
writer.Close();
writer.Dispose();
}
MessageBox.Show("Thanks for registering! \n\nYou may now log in!","Registration SuccessFul");
Application.OpenForms[0].Show();
this.Close();
}
public bool checkUsernameValid()
{
if (userNameBox.Text == "")
{
MessageBox.Show("Username cannot be empty", "Invalid Username Entry");
return false;
}
else
return true;
}
public bool checkPasswordsMatch()
{
if (!passwordBox.Text.Equals(repeatPasswordBox.Text))
{
MessageBox.Show("Sorry, your passwords do not match, try again", "Password Error");
passwordBox.Text = "";
repeatPasswordBox.Text = "";
return false;
}
else
return true;
}
public bool checkUsernameNotExist()
{
var userNames = File.ReadAllLines(@"C:\Other\myFile.txt");
if (userNames.Contains(userNameBox.Text))
{
MessageBox.Show(
"Sorry, that user name is not available, try again",
"Invalid Username Entry");
userNameBox.Text = "";
passwordBox.Text = "";
repeatPasswordBox.Text = "";
return false;
}
else
return true;
}
public void allOK()
{
if (!userNameBox.Text.Contains("Username: " + userNameBox.Text) && passwordBox.Text == repeatPasswordBox.Text)
{
mySW();
}
}
public bool checkPasswordsValid()
{
if (passwordBox.Text == "")
{
MessageBox.Show("Password fields cannot be empty", "Password Error");
return false;
}
else
return true;
}
}
}
完全なコードですが、私はそれを見てきました。なぜ同じユーザー名を登録できるのか、まだわかりません???? デバッガーで「はい、一致する文字列があります」と言っているのがわからないので、true を返しましょうか?!
注:ReadAllLinesではなくReadAllTextでソートできましたが、行が機能しなかった理由がわかりませんか?誰でも何か考えがありますか?
PSこのコード、もっと簡単で安全な方法はありますか? 私が欲しいのはシンプルなログイン画面です笑