Is there a built-in function to repeat a string or char in .NET?

Question

Is there a function in C# that returns x times of a given char or string? Or must I code it myself?

Answer 1

string.Join("", Enumerable.Repeat("ab", 2));

Returns

"abab"

And

string.Join("", Enumerable.Repeat('a', 2))

Returns

"aa"

Answer 2

string.Concat(Enumerable.Repeat("ab", 2));

returns

"abab"

Answer 3

For strings you should indeed use Kirk's solution:

string.Join("", Enumerable.Repeat("ab", 2));

However for chars you might as well use the built-in (more efficient) string constructor:

new string('a', 2); // returns aa

Answer 4

new String('*', 5)

请参阅罗塞塔代码。

Answer 5

最好的解决方案是内置的字符串函数：

 Strings.StrDup(2, "a")