StringBuilder.Append Vs StringBuilder.AppendFormat

Question

I was wondering about StringBuilder and I\'ve got a question that I was hoping the community would be able to explain.

Let\'s just forget about code readability, which o

Answer 1

Append will be faster in most cases because there are many overloads to that method that allow the compiler to call the correct method. Since you are using Strings the StringBuilder can use the String overload for Append.

AppendFormat takes a String and then an Object[] which means that the format will have to be parsed and each Object in the array will have to be ToString'd before it can be added to the StringBuilder's internal array.

Note: To casperOne's point - it is difficult to give an exact answer without more data.