尝试在VB.NET中制作随机密码生成器
到目前为止已经有了这个,但它只返回我试图做的第一部分
我有3个输入密码类型作为复选框,按此顺序:
Numeric
Alphabetic
Symbols
如果我有数字选中它会返回一个数字密码,但如果我有数字和字母检查它只返回一个数字密码,但如果我取消选中数字并且只有字母选中它然后返回和字母密码
字母密码也有三个选项:
Uppercase
Lowercase
Mixed Case
当与字母一起使用时,实际上会返回正确的密码
这是我到目前为止的代码:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
C_Numeric.Checked = True
R_Upper.Checked = True
End Sub
Private Sub B_Generate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles B_Generate.Click
Dim c_a As Boolean = False
Dim c_b As Boolean = False
Dim c_c As Boolean = False
Dim a As Integer
If C_Numeric.Checked = True Then
c_a = True
ElseIf C_Alphabetic.Checked = True Then
c_b = True
ElseIf C_Symbols.Checked = True Then
c_c = True
End If
If R_Lower.Checked = True Then
a = 1
ElseIf R_Upper.Checked = True Then
a = 2
ElseIf R_Mixed.Checked = True Then
a = 3
End If
If C_Numeric.Checked = True Or C_Alphabetic.Checked = True Or C_Symbols.Checked = True Then
TextBox1.Text = GenPass(NumericUpDown1.Value, c_a, c_b, c_c, a)
End If
End Sub
Function GenPass(ByVal Length As Integer, ByVal Num As Boolean, ByVal Alp As Boolean, ByVal Ascii As Boolean, ByVal Complexity As Integer)
Dim rand As New Random
Dim Pass As String = ""
Do Until Pass.Length = Length
Dim a As Integer
a = rand.Next(1, 3 + 1)
If a = 1 And Num = True Then
Pass += ChrW(rand.Next(Asc("0"), Asc("9") + 1))
End If
If a = 2 And Alp = True Then
If Complexity = 1 Then
Pass += ChrW(rand.Next(Asc("a"), Asc("z") + 1))
ElseIf Complexity = 2 Then
Pass += ChrW(rand.Next(Asc("A"), Asc("Z") + 1))
ElseIf Complexity = 3 Then
Dim b As Integer
b = rand.Next(1, 2 + 1)
If b = 1 Then
Pass += ChrW(rand.Next(Asc("A"), Asc("Z") + 1))
ElseIf b = 2 Then
Pass += ChrW(rand.Next(Asc("a"), Asc("z") + 1))
End If
End If
End If
If a = 3 And Ascii = True Then
Dim b As Integer
b = rand.Next(1, 4 + 1)
If b = 1 Then
Pass += ChrW(rand.Next(Asc("!"), Asc("/") + 1))
ElseIf b = 2 Then
Pass += ChrW(rand.Next(Asc(":"), Asc("@") + 1))
ElseIf b = 3 Then
Pass += ChrW(rand.Next(Asc("["), Asc("`") + 1))
ElseIf b = 4 Then
Pass += ChrW(rand.Next(Asc("{"), Asc("~") + 1))
End If
End If
Loop
Return (Pass)
End Function
例如(假设所有答案的长度均为16):
选择带有混合大小写的数字和字母应返回:
eVOv3fyTmW7mvH24 CZOXVzeo1EzLu7Al V313p9VLW0Bz7Zfi
但是返回:
8343299372194893 7303963979299152 3918539496952829
我还没有弄清楚为什么它实际上没有返回所需的结果
任何帮助将不胜感激
亚当
答案 0 :(得分:3)
这是因为
If C_Numeric.Checked = True Then
c_a = True
ElseIf C_Alphabetic.Checked = True Then
c_b = True
ElseIf C_Symbols.Checked = True Then
c_c = True
End If
因此,如果选中C_Numeric
和C_Alphabetic
,c_a
会获得True
,但行c_b
到True
的行设置将不会因ElseIf
而被点击。
因此,请删除Else
部分。
此外,您可以通过写入来简化此代码:
c_a = C_Numeric.Checked
c_b = C_Alphabetic.Checked
c_c = C_Symbols.Checked
代替If
子句,或者更好,通过调用来消除那些不必要的变量:
GenPass(NumericUpDown1.Value, C_Numeric.Checked, C_Alphabetic.Checked, C_Symbols.Checked, a)
还有很多改进可能。例如,不要将Complexity
参数作为Integer
传递,而是创建Enum
:
Enum Complexity
LowerOnly
UpperOnly
Mixed
End Enum
Function GenPass(Length As Integer, Num As Boolean, Alp As Boolean, Ascii As Boolean, Complexity As Complexity)
如果您使用的是VB 10.0(随.Net 4.0一起推出),您可以摆脱笨重的ByVal
关键字。另外,.Net Naming Guidelines in。
更多说明:
如果您正在检查If
子句中的布尔值,则无需显式写= True
:
If a = 3 And Ascii = True Then
可以写成
If a = 3 AndAlso Ascii Then
请注意,AndAlso
通常更适合And
,因为它的行为很短。
另外,更好地命名参数useAcii
而不是Acii
。它会使它更清晰。
答案 1 :(得分:0)
您可以使用以下代码获得所需的结果。
If C_Numeric.Checked = True Then
c_a = True
End If
If C_Alphabetic.Checked = True Then
c_b = True
End If
If C_Symbols.Checked = True Then
c_c = True
End If