Generate Unique Random String

[Juan]

Hi
How to generate an unique random string of determinate characters length?

Thanks

 

[Guest]

Hi Juan,
one way you could do this is shown below. The code creates a string of
pre-determined length that consists only of the character A-Z:


int stringLength = 10;

Random rnd = new Random((int)System.DateTime.Now.Ticks);
System.Text.StringBuilder randomText = new
System.Text.StringBuilder(stringLength);

//value of A in ascii codes
int minValue = 65;

//value of Z in ascii codes
int maxValue = 90;

//the range that we are allowed to go above the min value
int randomRange = maxValue - minValue;

double rndValue;

for(int i=0; i<stringLength; i++)
{
rndValue = rnd.NextDouble();

randomText.Append((char)(minValue + rndValue * randomRange));
}

Console.WriteLine(randomText.ToString());


Hope that helps
Mark R Dawson

 

[Octavio Hernandez]

If developing an ASP.NET application, you might find useful the SessionId
property,

http://msdn.microsoft.com/library/d...nStateHttpSessionStateClassSessionIDTopic.asp

a string that uniquely identifies each session.

Regards - Octavio