. Net method for generating random numbers

Pilot the namespace using system. Text; // used to use the stringbuilder Method

 

Protected static string getnumpwd (INT num) // generate a random number
{
String A = "0123456789 ";
Stringbuilder sb = new stringbuilder ();
For (INT I = 0; I <num; I ++)
{
SB. append (a [new random (guid. newguid (). gethashcode (). Next (0, A. Length-1)]);
}

Return sb. tostring ();
}
Protected static string getabcpwd (INT num) // generate random letters
{
String A = "abcdefghijklmnopqrstuvwxyz ";
Stringbuilder sb = new stringbuilder ();
For (INT I = 0; I <num; I ++)
{
SB. append (a [new random (guid. newguid (). gethashcode (). Next (0, A. Length-1)]);
}

return sb. tostring ();
}< br> protected static string getmixpwd (INT num) // generate a hybrid random number
{< br> string a = "0123456789 abcdefghijklmnopqrstuvwxyz ";
stringbuilder sb = new stringbuilder ();
for (INT I = 0; I {< br> Sb. append (a [new random (guid. newguid (). gethashcode ()). next (0,. length-1)]);
}

Return sb. tostring ();
}