要清除StringBuilder,请使用Clear()
方法。
假设我们已经设置了以下StringBuilder-
string[] myStr = { "One", "Two", "Three", "Four" }; StringBuilder str = new StringBuilder("We will print now...").AppendLine();
现在,使用该Clear()
方法清除StringBuilder-
str.Clear();
让我们看完整的代码-
using System; using System.Text; public class Demo { public static void Main() { //字符串数组 string[] myStr = { "One", "Two", "Three", "Four" }; StringBuilder str = new StringBuilder("We will print now...").AppendLine(); //foreach循环附加元素 foreach (string item in myStr) { str.Append(item).AppendLine(); } Console.WriteLine(str.ToString()); int len = str.Length; Console.WriteLine("Length: "+len); //清理 str.Clear(); int len2 = str.Length; Console.WriteLine("Length after using Clear: "+len2); Console.ReadLine(); } }
输出结果
We will print now... One Two Three Four Length: 40 Length after using Clear: 0