Print Prime numbers between 1 to 100

int length=100;
for(int  n=2;n<100;n++)
{
bool isprime=true;
for(int j=2;j<n;J++)
{
if(n%j==0)
{
isprime=false;
return;
}
}
if(isprime)
{
Console.Writeline("{0}is prime",n);
}
}