Common methods of StringBuilder objects

Common methods of StringBuilder objects,

Obtain an empty StringBuilder object

StringBuilder nb = new StringBuilder();

Obtain a StringBuilder object with initial value

StringBuilder nb = new StringBuilder("hello C#");

Convert string

String a = nb.ToString();

Output after printing

//第一次打印
Console.WriteLine(a);

Add content at the end

尾部添加内容   对象.Append(字符串)
nb.Append("666");

Second print

//第二次打印    输出要写对象
Console.WriteLine(nb);

Add a new line

//添加一行自动换行	sb对象.AppendLine(内容)
sb.AppendLine("abc");

Third print

//第三次打印
Console.WriteLine(sb);

Middle insertion

//中部插入	sb对象.Insert(下标,内容)
sb.Insert(5,"中部插入");

Fourth print

//第四次打印
Console.WriteLine(sb);

delete data

//删除数据  sb对象.Remove(起始索引,删除长度)
sb.Remove(5,4);

Fifth print

//第五次打印
Console.WriteLine(sb);