Using Random Functions in. net

Http://forum.byr.edu.cn/wForum/disparticle.php? Boardname = DOTNET & id = 980
The random number generated by the random function is always a value, and the random effect can appear in a single step tracking, which has been very strange. Code It is roughly as follows:
For (INT I = 0; I <10; I ++)
{
Random random = new random ();
Int Index = random. Next (10 );
}
The random function of. NET is related to the random seed, that is, the parameter passed to the random constructor. As shown in the code above, the default constructor is used to construct the random, and the system uses the current system time as the random number seed. However, the computer runs the above Code very quickly, the system time does not change, that is, the random number seed does not change. the random number is the same.
To solve this problem, each loop passes a different seed to the random constructor. A simple method provided on the Internet is to generate a new guid object and use its hash value (the hash value of each guid object is different) as the constructor parameter, as shown below:
For (INT I = 0; I <10; I ++)
{
Random random = new random (guid. newguid (). gethashcode ());
Int Index = random. Next (10 );
}