public class User { string username; string password; public User(string username, string password) { Username = username; Password = password; } public string Username { get => username; set => username = value; } public string Password { get =>
" '先声明一个常量,并把你想禁用或允许输入的内容赋值给它 Private Sub Text1_KeyPress(KeyAscii As Integer) '只能输入数字 KeyAscii = ), ) End Sub Private Sub Text2_KeyPress(KeyAscii As Integer) '只能输入数字以外的字符 KeyAscii = , KeyAscii) End Sub