c#怎么清空stringbuilder

Question

c#怎么清空stringbuilder

Answer 1

1\stringBuilder = null;//直接赋空值
2\stringBuilder = new StringBuilder();//重新实例化对象，可再次使用
3\stringBuilder.Dispose();//销毁对象
4\using(StringBuilder stringBuilder = new StringBuilder){//自动销毁对象，用完即消
//处理代码
}