Check if password field is empty

Question

In my XAML I have:

<PasswordBox PlaceholderText="Password" Name="login_password" Width="350" />

Am trying to check if the PasswordBox is empty via:

if(login_password.Text == "") //this returns an error
{
    //show message box
}

How can I check if the PasswordBox is empty?

Did you read the error message? – SLaks Jul 09 '17 at 13:59 — SLaks, Jul 09 '17 at 13:59
For password box it is `login_password.Password` not .Text – Suraj S Jul 09 '17 at 14:01 — Suraj S, Jul 09 '17 at 14:01

Salah Akbari · Answer 1 · 2017-07-10T08:42:06.643

3

The PasswordBox has the Password property. So you should check for Password property instead of Text:

if(login_password.Password == "")

edited Jul 10 '17 at 08:42

answered Jul 09 '17 at 14:00

Salah Akbari

2

When checking if a string has a value, you should use `string.IsNullOrWhitespace(login_password.Password)`. This checks if the string is `null`, empty (`""`) or only contains whitespace characters, such as spaces or newlines – Jon G Stødle Jul 10 '17 at 08:48
@JonStødle Good point. I'm agree with you and here is an example also https://stackoverflow.com/a/32631216/2946329 – Salah Akbari Jul 10 '17 at 08:57

1 Answers1