如何在 C# 中移除 StringBuilder 中的所有字符
StringBuilder。清除方法用于从当前字符串生成器实例中移除所有字符。
语法:
public System.Text.StringBuilder Clear ();
它返回一个长度为零的 StringBuilder 对象。
注意:
- Clear is a convenient method which is equivalent to setting the Length property of the current instance to 0 (zero).
- Calling the Clear method does not modify the Capacity or MaxCapacity properties of the current instance.
例:
// C# program to demonstrate
// the Clear() Method
using System;
using System.Text;
class GFG {
// Main Method
public static void Main(String[] args)
{
// Creating a StringBuilder object
StringBuilder sb1 = new StringBuilder("GeeksforGeeks");
// printing the length of "GeeksforGeeks"
Console.WriteLine("The String is: {0} \nTotal characters -- {1}",
sb1.ToString(), sb1.Length);
// using the method
sb1.Clear();
// printing the length of "GeeksforGeeks"
Console.WriteLine("The String is: {0} \nTotal characters -- {1}",
sb1.ToString(), sb1.Length);
sb1.Append("This is C# Tutorials.");
// printing the length of "GeeksforGeeks"
Console.WriteLine("The String is: {0} \nTotal characters -- {1}",
sb1.ToString(), sb1.Length);
}
}
输出:
The String is: GeeksforGeeks
Total characters -- 13
The String is:
Total characters -- 0
The String is: This is C# Tutorials.
Total characters -- 22
参考:
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