C# Append x occurrences of a character to a string

Question

What is the best/recommended way to add x number of occurrences of a character to a string eg

String header = "HEADER";

The header variable needs to have, let's say 100 0 's, added to the end of it. But this number will change depending on other factors.

Answer 1

How about:

header += new string('0', 100);

Of course; if you have multiple manipulations to make, consider StringBuilder :

StringBuilder sb = new StringBuilder("HEADER");
sb.Append('0', 100); // (actually a "fluent" API if you /really/ want...)
// other manipluations/concatenations (Append) here
string header = sb.ToString();

Answer 2

这将在字符串中追加100个零字符：

header += new string('0', 100);

Answer 3

How about

string header = "Header";
header = header.PadRight(header.Length + 100, '0');