解析C#中用Process类杀死进程，执行命令的深入分析

using System.Diagnostics;
using System.Management;
static void Main(string[] args)
{
foreach (Process p in Process.GetProcesses())
{
Console.Write(p.ProcessName);
Console.Write("----");
Console.WriteLine(GetProcessUserName(p.Id));
}
Console.ReadKey();
}
private static string GetProcessUserName(int pID)
{
string text1 = null;
SelectQuery query1 = new SelectQuery("Select * from Win32_Process WHERE processID=" + pID);
ManagementObjectSearcher searcher1 = new ManagementObjectSearcher(query1);
try
{
foreach (ManagementObject disk in searcher1.Get())
{
ManagementBaSEObject inPar = null;
ManagementBaSEObject outPar = null;
inPar = disk.GetMethodParameters("GetOwner");
outPar = disk.InvokeMethod("GetOwner",inPar,null);
text1 = outPar["User"].ToString();
break;
}
}
catch
{
text1 = "SYSTEM";
}
return text1;
}

string str = "";
Process[] processes;
//Get the list of current active processes.
processes = System.Diagnostics.Process.GetProcesses();
//Grab some basic information for each process.
Process process;
for(int i = 0;i<processes.Length-1;i++)
{
process = processes[i];
str = str + Convert.ToString(process.Id) + " : " +
process.ProcessName + "rn";
}
System.Windows.Forms.MessageBox.Show(str);
txtProcessID.Text = processes[0].Id.ToString();
//显示进程相关信息
string s = "";
System.Int32 processid;
Process process;
processid = Int32.Parse(txtProcessID.Text);
process = System.Diagnostics.Process.GetProcessById(processid);
s = s + "该进程的总体优先级类别:" + Convert.ToString(process.PriorityClass) + " rn";
s = s + "由该进程打开的句柄数:" + process.HandleCount + "rn";
s = s + "该进程的主窗口标题:" + process.MainWindowTitle + "rn";
s = s + " 该进程允许的最小工作集大小:" + process.MinWorkingSet.ToString() + " rn";
s = s + "该进程允许的最大工作集大小:" + process.MaxWorkingSet.ToString() + " rn";
s = s + "该进程的分页内存大小:" + process.PagedMemorySize + "rn";
s = s + "该进程的峰值分页内存大小:" + process.PeakPagedMemorySize + "rn";
System.Windows.Forms.MessageBox.Show(s);
}
catch
{
System.Windows.Forms.MessageBox.Show("不合法的进程ID！");
}

private void button2_Click(object sender,EventArgs e)
{
if (listView1.SelectedItems.Count > 0)
{
try
{
string proName = listView1.SelectedItems[0].Text;
Process[] p = Process.GetProcessesByName(proName);
p[0].Kill();
MessageBox.Show("进程关闭成功！");
GetProcess();
}
catch
{
MessageBox.Show("无法关闭此进程！");
}
}
else
{
MessageBox.Show("请选择要终止的进程!");
}
}

private string RunCmd(string command)
{
//实例一个Process类，启动一个独立进程
Process p = new Process();
//Process类有一个StartInfo属性
//设定程序名
p.StartInfo.FileName = "cmd.exe";
//设定程式执行参数
p.StartInfo.Arguments = "/c " + command;
//关闭Shell的使用
p.StartInfo.UseShellExecute = false;
//重定向标准输入
p.StartInfo.RedirectStandardInput = true;
p.StartInfo.RedirectStandardOutput = true;
//重定向错误输出
p.StartInfo.RedirectStandardError = true;
//设置不显示窗口
p.StartInfo.CreateNoWindow = true;
//启动
p.Start();
//也可以用这种方式输入要执行的命令
//不过要记得加上Exit要不然下一行程式执行的时候会当机
//p.StandardInput.WriteLine(command);
//p.StandardInput.WriteLine("exit");
//从输出流取得命令执行结果
return p.StandardOutput.ReadToEnd();
}