Visual Basics 水印密码字符？

Question

我目前正在为我的程序制作一个登录表单，其中我有两个文本框电子邮件和密码的水印。

当文本框为空时，其水印文本会出现在其中，如“用户名”和“密码”。 我的代码是： 公共类 frmLogin

Private Sub TextBox2_LostFocus(sender As Object, e As System.EventArgs)
    If TextBox2.Text = "" Then
        TextBox2.ForeColor = Color.DarkGray
        TextBox2.Text = "Username"
    End If

End Sub

Private Sub TextBox2_GotFocus(sender As Object, e As System.EventArgs) Handles TextBox2.GotFocus
    TextBox2.Text = ""
    TextBox2.ForeColor = Color.Black
End Sub

Private Sub TextBox1_GotFocus(sender As Object, e As System.EventArgs) Handles TextBox1.GotFocus
    If TextBox2.Text = "" Then
        TextBox2.ForeColor = Color.DarkGray
        TextBox2.Text = "Username"
    End If
    TextBox1.Text = ""
    TextBox1.ForeColor = Color.Black
End Sub

Private Sub TextBox1_LostFocus(sender As Object, e As System.EventArgs) Handles TextBox1.LostFocus
    If TextBox1.Text = "" Then
        TextBox1.ForeColor = Color.DarkGray
        TextBox1.Text = "Password"
    End If
End Sub

结束类

但现在我的问题是我想使用密码字符作为密码。但我仍然希望水印文本是普通文本。当我检查使用密码字符时，它会将我的水印变成“**”而不是“密码”。我该如何解决？

Answer 1

这看起来不错：

Private Sub TextBox1_GotFocus(sender As Object, e As System.EventArgs) Handles  TextBox1.GotFocus
         Textbox1.PasswordChar = "*"
         Textbox1.Clear()
End Sub


Private Sub TextBox1_LostFocus(sender As Object, e As System.EventArgs) Handles TextBox1.LostFocus
         TextBox1.PasswordChar = ControlChars.NullChar
End Sub