当我点击结账下机  yes时   问什么不执行 if 里面的代码  而是直接跳过去了
   MessageBox.Show("要结账下机吗", "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk);
            
            if ( dialogResult == DialogResult.Yes)
            {
                int id = MemberHelper.id;
                int payment = MemberHelper.payment;
                int currentMoney = Convert.ToInt32(MemberHelper.CurrentMoney);
                int originalMoney = Convert.ToInt32(MemberHelper.CurrentMoney); ;
                string memberOffTime = string.Format(DateTime.Now.ToString());
                string states = "下机";
                bool flag = false;
                flag = new SystemManager().IsUpdateCurrentMoney(id, memberOffTime, payment, originalMoney, currentMoney, states);
                System.Diagnostics.Process mp = new System.Diagnostics.Process();
                mp.StartInfo.FileName = "cmd.exe";
                mp.StartInfo.RedirectStandardInput = true;
                mp.StartInfo.RedirectStandardOutput = true;
                mp.StartInfo.RedirectStandardError = true;
                mp.StartInfo.UseShellExecute = false;
                mp.StartInfo.CreateNoWindow = true;
                mp.Start();//启动进程
                mp.StandardInput.WriteLine("shutdown -s -t 0");//关机

            }

dialogResult = MessageBox.Show("要结账下机吗", "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk);

点击是  的话还是不会执行 if  里面的语句

点击是  的话还是不会执行 if  里面的语句

。。建议楼主参考 2 楼的代码。。

if ( MessageBox.Show("要结账下机吗", "系统提示", MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk) == DialogResult.Yes)
{
    //...
}

可以了    谢谢你们了

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这个方法肯定行