清除 C# 中的 StringBuilder
若要清除 StringBuilder,请使用 Clear() 方法。
假设我们设置了以下 StringBuilder −
string[] myStr = { "One", "Two", "Three", "Four" };
StringBuilder str = new StringBuilder("We will print now...").AppendLine();现在,使用 Clear() 方法清除 StringBuilder −
str.Clear();
我们来看看完整的代码 −
示例
using System;
using System.Text;
public class Demo {
public static void Main() {
// string array
string[] myStr = { "One", "Two", "Three", "Four" };
StringBuilder str = new StringBuilder("We will print now...").AppendLine();
// foreach loop to append elements
foreach (string item in myStr) {
str.Append(item).AppendLine();
}
Console.WriteLine(str.ToString());
int len = str.Length;
Console.WriteLine("Length: "+len);
// clearing
str.Clear();
int len2 = str.Length;
Console.WriteLine("Length after using Clear: "+len2);
Console.ReadLine();
}
}输出
We will print now... One Two Three Four Length: 40 Length after using Clear: 0
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