private void chance_option_Click(object sender, EventArgs e)
{
cmdProcess p = new cmdProcess();
string arguments = "-list_options true -f dshow -i video=\"" + dShow_Name.Text + "\"";
p.InitP(arguments);
p.ErrorDataReceived += new DataReceivedEventHandler(option_Append);
p.Start();
p.BeginErrorReadLine();
p.WaitForExit();
p.Close();
p.Dispose();
}
private void button1_Click(object sender, EventArgs e)
{
cmdProcess p = new cmdProcess();
string arguments = "-list_devices true -f dshow -i dummy";
p.InitP(arguments);
p.ErrorDataReceived += new DataReceivedEventHandler(dShow_Append);
p.Start(); //启动线程
p.BeginErrorReadLine(); //开始异步读取
p.WaitForExit(); //阻塞等待进程结束
p.Close(); //关闭进程
p.Dispose();
}