1.   StringBuilder sb = new StringBuilder();

StringBuilder的改变比string快多了

2. sb.Append("\r\n");  //向stringbuilder中添加内容

 

3.

richTextBox1output.AppendText(sb.ToString());//https://zhidao.baidu.com/question/84734305.html

向winform自带控件richtextbox中最后一行追加内容。

 

4.  richTextBox1output.ScrollToCaret();//将滚动条滚动到当前焦点处

 

5.sb.Remove(0, sb.Length);//清除stringbuilder中内容

 

 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace WindowsFormsApplication1output
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void button1output_Click(object sender, EventArgs e){StringBuilder sb = new StringBuilder();double[,] matrix=new double[100,10];for (int i = 0; i < 100; i++){for (int j = 0; j < 10; j++){matrix[i, j] = i + j;}               }for (int i = 0; i < 100; i++){for (int j = 0; j < 10; j++){sb.Append(matrix[i,j]);                   sb.Append("\t");}sb.Append("\r\n");//richEditControl1output.Text = sb.ToString();//richEditControl1output.ScrollToCaret(0.5f);richTextBox1output.AppendText(sb.ToString());//https://zhidao.baidu.com/question/84734305.html//richTextBox1output.Text += sb.ToString();
                richTextBox1output.ScrollToCaret();sb.Remove(0, sb.Length);}}}
}