Which passwordchar shows a black dot (•) in a winforms textbox using code?

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Which passwordchar shows a black dot (•) in a winforms textbox?
Unicode encoding for string literals in C++11

I want to use code to reveal the password or make it a dot like •

textBoxNewPassword.PasswordChar = (char)0149;

How can I achieve this?

Solution 1

http://blog.billsdon.com/2011/04/dot-password-character-c/ suggests '\u25CF';

Or try copy pasting this •

Solution 2

(not exactly an answer to your question, but still)

You can also use the UseSystemPasswordChar property to select the default password character of the system:

textBoxNewPassword.UseSystemPasswordChar = true;

Often mapped to the dot, and always creating a consistent user experience.

Solution 3

You need to look into using the PasswordBox control and setting the PasswordChar as *.

Example:

textBox1.PasswordChar = '*'; // Set a text box for password input

Solution 4

Wikipedia has a table of similar symbols.

In C#, to make a char literal corresponding to U+2022 (for example) use '\u2022'. (It's also fine to cast an integer literal as you do in your question, (char)8226)

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Late addition. The reason why your original approach was unsuccessful, is that the value 149 you had is not a Unicode code point. Instead it comes from Windows-1252, and Windows-1252 is not a subset of Unicode. In Unicode, decimal 149 means the C1 control code "Message Waiting".

You could translate from Windows-1252 with:

textBoxNewPassword.PasswordChar = 
  Encoding.GetEncoding("Windows-1252").GetString(new byte[] { 149, })[0];

but it is easier to use the Unicode value directly of course.

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In newer versions of .NET, you need to call:

Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

before you can use something like Encoding.GetEncoding("Windows-1252").

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