Question

我想从文本文件中加载字符串作为变量。例如，一个不安全的登录屏幕，用户将其凭证输入到文本框中，程序将读取已输入到文本框中的内容，并且当文本文件中存储的凭证相同时将加载下一个表单。

Answer 1

更新：解决了超过1个半小时的谷歌搜索

Public Class Form1
    Public pass As String = String.Empty
    Public user As String = String.Empty
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        If TextBox2.Text = (user) And TextBox1.Text = (pass) Then
            Login.Show()
            Me.Close()
        Else
            MessageBox.Show("Wrong Password or User Name")
        End If
        TextBox2.Text = ""
        TextBox1.Text = ""
    End Sub

    Private Sub TextBox2_TextChanged(sender As Object, e As EventArgs) Handles TextBox2.TextChanged
        If TextBox2.Text = "" And TextBox1.Text = "" Then
            Button1.Enabled = False
        Else
            Button1.Enabled = True
        End If
    End Sub

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        pass = IO.File.ReadAllText("pass.txt")
    user = IO.File.ReadAllText("user.txt")
    End Sub
End Class

刚刚使用了IO.File.ReadAllText（“user.txt”）这将读取文本文件中的所有字符串，并将它们存储到空变量中，而不是最好的方法，但适用于此应用程序

如何在Visual Basic中声明文本文件中的变量

1 个答案: