String. Format or StringBuilder efficiency?

I suddenly remembered this. I could have written a blog...

The following is a question about the efficiency of String. Format or StringBuilder? As for this question,

Directly ask him to use the powerful weapon Reflector to learn about the String. Format method.

As a result, he quickly found out the relevant code:

Code

 public static string Format(IFormatProvider provider, string format, params object[] args)
{
if ((format == null) || (args == null))
    {
throw new ArgumentNullException((format == null) ? "format" : "args");
    }
    StringBuilder builder = new StringBuilder(format.Length + (args.Length * 8));
    builder.AppendFormat(provider, format, args);
return builder.ToString();
}

Of course, it's too late, and I don't even have to post too much code to prove the difference between them.

Obviously, String. Format calls the StringBuilder class, but this does not indicate that String. Format is faster than StringBuilder, or that StringBuilder is faster than String. Format,

It can only be said that the StringBuild efficiency is determined by some factors, including the number of series and the size of strings,

But at least in the small number of codes we usually use, the difference can be ignored. For the current development application, there is no need to decide whether to win or lose. Let's look at the application scenarios ).

PS: StringBuilder first creates a buffer area when creating a string. When the StringBuilder operation changes the string data value,

StringBuilder checks whether the buffer size is sufficient to accommodate new string data. If not, the buffer size will increase the pre-determined quantity.

Because the memory configuration operation is greatly reduced, the efficiency can be effectively improved. I don't want to spend too much time on this topic...