看来你的问题其实是，如果你移动执行到另一个位置/文件夹的同一 PC，它失去了某种程度上的事实，它已经至少运行一次的信息。

Seems that your problem is actually that if you move executable to another location/folder on the same pc, it loses somehow the information about the fact that it was already run at least once.

使用 UserSettings ，在 Properties.Settings.Default.FirstRun 应该解决您的问题。

Using UserSettings, on Properties.Settings.Default.FirstRun should resolve your problem.

这样的事情，一个的伪code 的：

Something like this, a pseudocode:

if(Properties.Settings.Default.FirstRun == true)
{ lblGreetings.Text = "Welcome New User";
  //Change the value since the program has run once now
  Properties.Settings.Default.FirstRun = false;
  Properties.Settings.Default.Save(); }
else
{ lblGreetings.Text = "Welcome Back User"; }

旁观这样品如何实现，在更详细方法。

Look on this sample how to achieve that in more detailed way.