Question

Public Function random_key(ByVal lenght As Integer) As String
    Randomize()
    Dim s As New System.Text.StringBuilder("")
    Dim b() As Char = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".ToCharArray()
    For i As Integer = 1 To lenght
        Randomize()
        Dim z As Integer = Int(((b.Length - 2) - 0 + 1) * Rnd()) + 1
        s.Append(b(z))
    Next
    Return s.ToString
    Console.WriteLine(s.ToString)

End Function

我想把它打印出来 s = textbox1.text或somethhing ...

Answer 1

使用Console.WriteLine有什么问题？

请注意，您不应该将其放在方法中的return statement后面，因为返回后面的代码是unreachable。

Dim random As String = random_key(10)
Console.WriteLine(random)

打印vb.net中函数的输出

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