convert hexadecimal value into alphanumerical value

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hello
i have a window application in this application i need to convert hexa decimal value into alphanumerical value , can any body tell me how to do

Posted 7-Jul-15 23:57pm

Member 10273293

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CHill60 8-Jul-15 6:11am

Your question is not entirely clear. If you post the code you have already tried then it might help us to understand your requirement

Member 10273293 8-Jul-15 6:23am

my coding is this
private void button1_Click(object sender, EventArgs e)
{
string hex2 = textBox1.Text;
BigInteger dec2 = BigInteger.Parse(hex2, System.Globalization.NumberStyles.HexNumber);
textBox2.Text = dec2.ToString();
}
this coding convert hexa value into decimal value but i need this value into alphanumerical format

Richard MacCutchan 8-Jul-15 6:29am

So what is wrong with that result?

phil.o 8-Jul-15 6:24am

Please define an 'alphanumerical' value. What is the alphanumerical value of 1? Of 100? Of 10000?

Member 10273293 8-Jul-15 6:30am

as example i have a password 123xyz# i have convert it into hexa value like this 0cdfb1d903c2ecbc67208b7a4f8ec83181718a
now can i have convert this into again 123xyz# format

Richard MacCutchan 8-Jul-15 8:02am

If that is how you are managing passwords then be aware that your system is totally insecure. See http://www.codeproject.com/Articles/54164/Secure-Password-Authentication-Explained-Simply for how to do it properly.

Ralf Meier 8-Jul-15 7:10am

Your Source-Value is a Text-String ?
For Example "Password_0102" ...?
Now you want to convert it ... into what format ?
Into an integer-value ? - you should remember that integers aren't endless.
Or do you want to convert each character-code (ASCII-Code) into it's Hex-Value and build a string from it ?

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OriginalGriff · Answer 1 · 2015-07-08T01:11:00

SQL

as example i have a password 123xyz# i have convert it into hexa value like this 0cdfb1d903c2ecbc67208b7a4f8ec83181718a
now can i have convert this into again 123xyz# format

If it's a password, then the whole idea is that you don't. What you should do is use a Hashing algorithm on the "raw text" and store the hash value.
When you want to check if the user entered the correct password, you again use the hashing algorithm, and compare the two hash values. If they are the same, it's fine.
At no time do you try to "unhash" the stored value and compare the resulting text.

See here: Password Storage: How to do it.[^]