How to seprate username and password with ":"?

Question

1.00/5 (2 votes)

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Hi Friends,

I have made an app which will get username and password from a text file in the following form

username:password

These details then will be added to a combobox.

I want to make that text (username) before ":" should go in username field of the login form and text (password) after ":" should go in password field.

Please help how to do it?

Posted 9-Jul-14 8:01am

zubair30

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Comments

[no name] 9-Jul-14 14:09pm

Split()

zubair30 9-Jul-14 14:11pm

please explain I complete new

Thanks7872 9-Jul-14 14:21pm

if you are not able to understand it,then i don't think you will be able to read from text file. Further, instead of relying solely on others, if someone suggested something try learning about it. No one will be going to teach you here.

Bernhard Hiller 10-Jul-14 2:40am

And what about a ":" in the password?

George Jonsson 10-Jul-14 4:43am

My solution takes care of that.

3 solutions

Solution 2

There are two ways of doing it
1) Using the split function as shown in solution 2 above
2) using the left right inbuilt functions as shown below (THIS IS VB6 Sample code):

VB

Dim str As String
Dim uname As String
Dim pwd As String

str = ":usernamepassword"
If InStr(1, str, ":") > 0 Then
    uname = Left(str, InStr(1, str, ":") - 1)
    pwd = Right(str, Len(str) - InStr(1, str, ":"))
Else
    uname = str
    pwd = ""
End If

Posted 9-Jul-14 21:10pm

Gauri Chodanker

Solution 3

You can also use regular expression with group names.

C#

// This expression allows the password part to be empty.
// Change the * in (?<pwd>.*) to a +, to require at least one character
     
System.Text.RegularExpressions.Regex expr = 
   new System.Text.RegularExpressions.Regex(@"^(?<user>[\S\s]+?)\s*:\s*(?<pwd>.*)$");

string userName = "";
string password = "";
System.Text.RegularExpressions.Match m = expr.Match("Donald Duck : Mickey!234");
if (m.Success)
{
    userName = m.Groups["user"].Value;
    password = m.Groups["pwd"].Value;   // No need to check if there is a password
}

Posted 9-Jul-14 21:37pm

George Jonsson

Updated 9-Jul-14 21:42pm

v3

Comments

Bernhard Hiller 10-Jul-14 9:07am

And what if the username contains a ":"?

George Jonsson 10-Jul-14 10:03am

It works for that too.
You can try yourself if you have the time.

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OriginalGriff · Accepted Answer · 2014-07-09T08:19:00

That really is a poor idea, but...

C#

string input = "username:password";
string[] parts = input.Split(':');
if (parts.Length >= 2)
    {
    Console.WriteLine("Username : {0}", parts[0]);
    Console.WriteLine("Password : {0}", parts[1]);
    }

It's very, very insecure - so don't use any of your real passwords for testing (or real world data, if you are going to do that with it)
If anyone gets their hands on the text file, they could have your entire password list...