在整个程序中调用变量时出现问题 c#

发布于 2024-11-03 01:49:25 字数 1013 浏览 0 评论 0原文

我认为这非常简单，但我对如何设置变量“结果”感到困惑（请参阅下面的代码），因此当我希望计时器显示当前 RAM 使用情况除以总数时，我可以稍后在程序中调用它安装 RAM 以收集使用百分比。 WMI 收集已安装 RAM 的方式一直让我感到困惑，因为它必须执行结果[“TotalVisibleMemorySize”]。将整个代码块放在计时器中的问题是，它每 2 秒刷新一次，这确实会滞后计数器，因为 WMI 很慢。谢谢！

private void Form1_Load(object sender, EventArgs e)
    {
        ObjectQuery wql = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(wql);
        ManagementObjectCollection results = searcher.Get();

        foreach (ManagementObject result in results)
        {                
             label1.Text = Convert.ToInt32(result["TotalVisibleMemorySize"]) + " KB";               
        }
    }
    private void timer1_Tick(object sender, EventArgs e)
    {
        progressBar1.Value = (int)(performanceCounter1.NextValue() - Convert.ToInt32(result["TotalVisibleMemorySize"]));
        label1.Text = "Processor Time: " + progressBar1.Value.ToString() + "%";                          
    }

原文

I think this is very simple but I am confused on how to set the variable "result" (see the code below) so I can call it later on in the program when I want the timer to display the current RAM usage divided by the total RAM installed to gather a usage percent. The way WMI gathers the installed RAM has been throwing me off as it has to do result["TotalVisibleMemorySize"]. The issue with having the whole block of code in the timer is that it refreshes every 2 seconds which would really lag up the counter since WMI is slow. Thanks!

private void Form1_Load(object sender, EventArgs e)
    {
        ObjectQuery wql = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");
        ManagementObjectSearcher searcher = new ManagementObjectSearcher(wql);
        ManagementObjectCollection results = searcher.Get();

        foreach (ManagementObject result in results)
        {                
             label1.Text = Convert.ToInt32(result["TotalVisibleMemorySize"]) + " KB";               
        }
    }
    private void timer1_Tick(object sender, EventArgs e)
    {
        progressBar1.Value = (int)(performanceCounter1.NextValue() - Convert.ToInt32(result["TotalVisibleMemorySize"]));
        label1.Text = "Processor Time: " + progressBar1.Value.ToString() + "%";                          
    }

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忘羡 2024-11-10 01:49:25

好吧，您的结果变量位于 Form1_Load 方法中。

您需要将其移出该范围，或者作为 Form1 的成员，或者作为全局变量（如在 Program.cs 中）。

我建议不要执行全局变量，而是创建一个私有变量，例如：

public class Form1
{
    private ManagementObjectCollection results;
... rest of code
}

然后当您需要时，在 Form1 类的其他地方，您可以使用 results.Whatever

Well, your results variable is in your Form1_Load method.

You'd need to move it outside that scope, either as a member of Form1, or a global (like in Program.cs.)

I'd recommend NOT doing a global, but creating a private variable like:

public class Form1
{
    private ManagementObjectCollection results;
... rest of code
}

Then when you need to, in other places in your Form1 class you could use the results.Whatever

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妥活 2024-11-10 01:49:25

您可以在类中声明私有变量：

private int _totalMemory = 0;

// And in your form load event.
_totalMemory = Convert.ToInt32(result["TotalVisibleMemorySize"])

// And in your timer tick event.
progressBar1.Value = (int)(performanceCounter1.NextValue() - _totalMemory);

You are allowed to declare private variable inside the class:

private int _totalMemory = 0;

// And in your form load event.
_totalMemory = Convert.ToInt32(result["TotalVisibleMemorySize"])

// And in your timer tick event.
progressBar1.Value = (int)(performanceCounter1.NextValue() - _totalMemory);

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