Random Number and String Generation in C#

This article will show you how you can generate random number in and random string in c#.net.  In this I will give example to generate random no, generate random no below specific no, random no generation in given range, character generation, password generation with combination of number and text using c#.net.

Random No: This will generate random no .

static void Main(string[] args)         {             Random r = new Random();             int randomno = r.Next();             Console.WriteLine(randomno);         }

Below is the output of the above code.

Random no below given no: This will generate random number on given below no.

static void Main(string[] args)         {             Random r = new Random();             int randomno = r.Next(20000);             Console.WriteLine(randomno);         }

As we run the above code will generate random no on below given no.

Range Random No: This will help us to generate random no as per give range.

static void Main(string[] args)         {             Random r = new Random();             int randomno = r.Next(1000,20000);             Console.WriteLine(randomno);         }

Above code will generate random no on given range only

Random Character: This piece of code will generate random character as per the given count

static void Main(string[] args)         {             int charCount = 5;             Random r = new Random();             StringBuilder str = new StringBuilder();             for (int i = 0; i < charCount; i++)             {                 str.Append(Convert.ToChar(Convert.ToInt32(Math.Floor(26 * r.NextDouble() + 65))));             }             Console.WriteLine(str.ToString());         }

In above code below mention code is most important. This will help us to generate the random character.

Convert.ToChar(Convert.ToInt32(Math.Floor(26 * r.NextDouble() + 65)))

Output for above code is.

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