在C#程序开发过程中,有时需要运行其它的程序并获得输出的结果来进行进一步的处理。一般第三方的程序,主要通过进程来调用,如果能够获取第三方程序执行过程中的信息,就显得方便而有用。本文主要讲解如何将命令行信息实时的输出到文本框中。
设计到知识点:
- 进程相关类: Process,ProcessStartInfo,主要设置进程的重定向输出,以及接受数据的事件。
- 文本框操作:多行显示,滚动条总在最下面
效果图如下【如果命令执行完毕,会自动结束,如果中断进程,可以手动点击结束进程】:
主要代码如下:
1 using System;View Code
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Data;
5 using System.Diagnostics;
6 using System.Drawing;
7 using System.Linq;
8 using System.Runtime.InteropServices;
9 using System.Text;
10 using System.Threading;
11 using System.Threading.Tasks;
12 using System.Windows.Forms;
13
14 namespace DemoBat
15 {
16 public partial class MainForm : Form
17 {
18 private BatStatus curBatSataus = BatStatus.NONE;
19
20 private Process curProcess = new Process();
21
22 public MainForm()
23 {
24 InitializeComponent();
25 }
26
27 private void MainForm_Load(object sender, EventArgs e)
28 {
29 InitInfo();
30 }
31
32 private void InitInfo()
33 {
34 curProcess.OutputDataReceived -= new DataReceivedEventHandler(ProcessOutDataReceived);
35 ProcessStartInfo p = new ProcessStartInfo();
36 p.FileName = "cmd.exe";
37 //p.Arguments = " -t 192.168.1.103";
38 p.UseShellExecute = false;
39 p.WindowStyle = ProcessWindowStyle.Hidden;
40 p.CreateNoWindow = true;
41 p.RedirectStandardError = true;
42 p.RedirectStandardInput = true;
43 p.RedirectStandardOutput = true;
44 curProcess.StartInfo = p;
45 curProcess.Start();
46
47 curProcess.BeginOutputReadLine();
48 curProcess.OutputDataReceived += new DataReceivedEventHandler(ProcessOutDataReceived);
49 }
50
51 /// <summary>
52 /// 开始命令行
53 /// </summary>
54 /// <param name="sender"></param>
55 /// <param name="e"></param>
56 private void btnStart_Click(object sender, EventArgs e)
57 {
58 if (string.IsNullOrEmpty(this.txtCommand.Text.Trim()))
59 {
60 MessageBox.Show("请输入命令");
61 }
62 if (curBatSataus != BatStatus.ON)
63 {
64 curProcess.StandardInput.WriteLine(this.txtCommand.Text.Trim());
65 curBatSataus = BatStatus.ON;
66 }
67 else {
68 MessageBox.Show("当前进程正在运行,请先关闭");
69 }
70
71 }
72
73 /// <summary>
74 /// 结束命令行
75 /// </summary>
76 /// <param name="sender"></param>
77 /// <param name="e"></param>
78 private void btnStop_Click(object sender, EventArgs e)
79 {
80 if (curBatSataus == BatStatus.ON)
81 {
82 curProcess.CancelOutputRead();//取消异步操作
83 curProcess.Kill();
84 curBatSataus = BatStatus.OFF;
85 //如果需要手动关闭,则关闭后再进行初始化
86 InitInfo();
87 }
88 }
89
90 /// <summary>
91 /// 进程接受事件
92 /// </summary>
93 /// <param name="sender"></param>
94 /// <param name="e"></param>
95 public void ProcessOutDataReceived(object sender, DataReceivedEventArgs e)
96 {
97 if (this.txtOutPutInfo.InvokeRequired)
98 {
99 this.txtOutPutInfo.Invoke(new Action(() =>
100 {
101 this.txtOutPutInfo.AppendText(e.Data + "\r\n");
102 }));
103 }
104 else {
105 this.txtOutPutInfo.AppendText(e.Data + "\r\n");
106 }
107 }
108
109 private void timer1_Tick(object sender, EventArgs e)
110 {
111 if ((string.IsNullOrEmpty(this.curProcess.StartInfo.FileName) || this.curProcess.StandardInput.BaseStream.CanWrite) && curBatSataus != BatStatus.OFF)
112 {
113 curBatSataus = BatStatus.OFF;
114
115 }
116 }
117
118 }
119
120 /// <summary>
121 /// 命令状态
122 /// </summary>
123 public enum BatStatus {
124 NONE = 0,
125 ON = 1,
126 OFF = 2
127 }
128 }
备注:
关于如何在命令行执行过程中【如:Ping 192.168.1.100 -t】,键入快捷键【如:Ctrl+C】等操作,目前还没有实现。目前采用的就强制关闭进程方法