給位老師：在c#中如何判斷壹個字符串內含有的空格數請給出具體代碼？

static?int?Count(string?WithinString,?string?search)

{

if?(string.IsNullOrEmpty(search))

throw?new?ArgumentNullException("search");

int?counter?=?0;

int?index?=?WithinString.IndexOf(search,?0);

while?(index?>=?0?&&?index?<?WithinString.Length)

{

counter++;

index?=?WithinString.IndexOf(search,?index?+?search.Length);

}

return?counter;

}

然後用Count(要查找的字條串," ") 就可以取空格數量了

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