C ＃ realizes the login interface, and the password asterisk is displayed (hide the input password)

In software design , It is often necessary to set the login permission of users . When the user fills in the password , How to realize input hiding , Or with “*” No. for hidden display ？ We need to use textBox Of PasswordChar attribute .

Attribute interpretation

PasswordChar Property is used to get or set characters , This character is used to mask a single line TextBox Password characters in control .

Code

The following shows checkBox State switching response function Code

private void ckBoxPassword_CheckedChanged(object sender, EventArgs e)
{
    if(ckBoxPassword.Checked)
    {
        tBoxPassword.PasswordChar = '\0';   // Display input 
    }
    else
    {
        tBoxPassword.PasswordChar = '*';   // Show *
    }
}

effect

engineering

Portal ：

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