c# - 电池电量 IF 语句

Question

我正在用 C# 开发一个语音识别程序，并且我已经编译了几行代码，当我说“电池电量”时，它们会说出当前的电池电量。

if (e.Result.Text.ToLower() == "battery level")
        {
            System.Management.ManagementClass wmi = new System.Management.ManagementClass("Win32_Battery");
            var allBatteries = wmi.GetInstances();
            String estimatedChargeRemaining = String.Empty;

            foreach (var battery in allBatteries)
            {
                estimatedChargeRemaining = Convert.ToString(battery["EstimatedChargeRemaining"]);
            }

            JARVIS.Speak("The Power Level Is At: " + estimatedChargeRemaining + "% sir");
            return;
        }

在其中我想创建另一个 if当电池电量低于 25% 时提醒我的声明。如何才能做到这一点？我猜它会类似于“if estimatedChargeRemaining < 25 then JARVIS.Speak("Warning, Battery level has dropped below 25%") 但我不太确定。

Answer 1

我不确定 battery["EstimatedChargeRemaining"] 返回什么格式，但似乎您可以将其转换为 int 而不是字符串。

int batteryLevel = Convert.ToInt32(battery["EstimatedChargeRemaining"]);
if(batteryLevel < 25)       
   JARVIS.Speak("Warning, Battery level has dropped below 25%");

您可以稍后使用该batteryLevel变量

JARVIS.Speak("The Power Level Is At: " + batteryLevel.ToString() + "% sir");

不确定这是否是有意的，但您的 foreach 循环意味着您只能获取 allBatteries 中最后一个值的电池信息。之前的所有值都将被覆盖。

编辑评论(您应该添加错误处理)

if (e.Result.Text.ToLower() == "battery level")
{
    System.Management.ManagementClass wmi = new System.Management.ManagementClass("Win32_Battery");
    var allBatteries = wmi.GetInstances();
    //String estimatedChargeRemaining = String.Empty;
    int batteryLevel = 0;

    foreach (var battery in allBatteries)
    {
        batteryLevel = Convert.ToInt32(battery["EstimatedChargeRemaining"]);
    }

    if(batteryLevel < 25)       
       JARVIS.Speak("Warning, Battery level has dropped below 25%");
    else //Guessing you want else
       JARVIS.Speak("The Power Level Is At: " + batteryLevel.ToString() + "% sir");
    return;
}