随机选择文本框中的字母为大写或小写

Question

如何设置它以使文本框中的句子随机（对于每个字母）大写或小写，例如：

＆＃34;你好，我是Greg＆＃34;将进入＆＃34; hEllO i a g gg＆＃34;

这样的事，谢谢。

Answer 1

您可以尝试：解释将作为评论

    Dim input As String = TextBox2.Text '<--- this should be input "Hello I am Greg" 
    TextBox2.Text = "" '<--- clear the textbox to store output
    Dim rnd As New Random '<---- generating new random number 
    For Each c As Char In input '<--- iterate through each character
        If rnd.Next() Mod 2 = 0 Then
            TextBox2.Text &= UCase(c) '<--- if true then print particular letter in upperCase
        Else
            TextBox2.Text &= LCase(c) '<--- if true then print particular letter in LowerCase
        End If
    Next