private void AsuMotionSetCurrentPostion(object sender, EventArgs e) { int ret = AsuInvoke.AsuMotion_SetCurrentPostion(handle, ref AsuMotionPos); switch (ret) { case 0: Print("设置当前坐标 成功"); break; case 1: Print("设置当前坐标 失败,设备句柄为空指针,一般因为没有打开设备导致"); break; default: Print("设置当前坐标 失败"); break; } }