C#中的StringBuilder.ToString()方法

C#中的StringBuilder.ToString()方法用于将StringBuilder的值转换为String。

语法

语法如下-

public override string ToString ();
public string ToString (int begnIndex, int len);

上面的参数begnIndex在这种情况下是子字符串的开始位置，而len是子字符串的长度。

示例

现在让我们看一个例子-

using System;
using System.Text;
public class Demo{
   public static void Main(){
      StringBuilder strBuilder = new StringBuilder("Katie");
      Console.WriteLine("String = "+strBuilder.ToString());
      Console.WriteLine("\nStringBuilder capacity = "+strBuilder.Capacity);
      Console.WriteLine("StringBuilder length = "+strBuilder.Length);
      strBuilder.EnsureCapacity(35);
      Console.WriteLine("\nStringBuilder capacity= "+strBuilder.Capacity);
      Console.WriteLine("StringBuilder length = "+strBuilder.Length);
      strBuilder.EnsureCapacity(0);
      strBuilder.Length = 0;
      Console.WriteLine("\nStringBuilder capacity= "+strBuilder.Capacity);
      Console.WriteLine("StringBuilder length = "+strBuilder.Length);
   }
}

输出结果

这将产生以下输出-

String = Katie
StringBuilder capacity = 16
StringBuilder length = 5
StringBuilder capacity= 35
StringBuilder length = 5
StringBuilder capacity= 35
StringBuilder length = 0

示例

现在让我们来看另一个示例-

using System;
using System.Text;
public class Demo{
   public static void Main(){
      StringBuilder strBuilder = new StringBuilder("TomHanks");
      Console.WriteLine("StringBuilder = "+strBuilder.ToString());
      Console.WriteLine("String = "+strBuilder.ToString(3, 5));
      Console.WriteLine("\nStringBuilder capacity = "+strBuilder.Capacity);
      Console.WriteLine("StringBuilder length = "+strBuilder.Length);
      strBuilder.EnsureCapacity(35);
      Console.WriteLine("\nStringBuilder capacity= "+strBuilder.Capacity);
      Console.WriteLine("StringBuilder length = "+strBuilder.Length);
      strBuilder.EnsureCapacity(0);
      strBuilder.Length = 0;
      Console.WriteLine("\nStringBuilder capacity= "+strBuilder.Capacity);
      Console.WriteLine("StringBuilder length = "+strBuilder.Length);
   }
}

输出结果

这将产生以下输出-

StringBuilder = TomHanks
String = Hanks
StringBuilder capacity = 16
StringBuilder length = 8
StringBuilder capacity= 35
StringBuilder length = 8
StringBuilder capacity= 35
StringBuilder length = 0