追加操 Append(char[]) .◆Append(object) =◆Append(ulong) ■追加新的字符串到当前Stri 三Append(uint) 结 尾处 三◆Append(ushort) 三◆ Append(decimal) public System.Text.String .三◆Append(double) 进 value) .=◆Append(float)) =◆Append(long) ◆Append(int) .三◆Append(short) System.Text.StringBuilder sb new System.Text.StringBuilder(); sb.Append ("one ") sb.Append ("two ") sb.Append("three"); string str sb.ToString(); System.Console.WriteLine(str); Ψe1Iu3Iy Append(char[],int,int) =◆Append(char,int) 1414 追加操作 ▪ 追加新的字符串到当前StringBuilder字符串的结 尾处 ◼ public System.Text.StringBuilder Append(object value)