StringBuilder is more efficient than string concatenation, especially when the operator is repeated over and over as in loops.
Noncompliant code example
string str = "";
for (int i = 0; i < arrayOfStrings.Length ; ++i)
{
str = str + arrayOfStrings[i];
}
Compliant solution
StringBuilder bld = new StringBuilder();
for (int i = 0; i < arrayOfStrings.Length; ++i)
{
bld.Append(arrayOfStrings[i]);
}
string str = bld.ToString();
