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
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