Question

我的数学有点生疏，所以我希望有人可以帮助我。使用下面的代码我想执行以下操作：根据安装的内存量，我想显示可用内存的百分比，而不是以兆字节为单位剩余的内存。

private void timer1_Tick(object sender, EventArgs e)
{
    string memory;
    int mem;
    memory = GetTotalMemoryInBytes().ToString();
    mem = Convert.ToInt32(memory);
    mem = mem / 1048576; 
    progressBar2.Maximum = mem;
    progressBar2.Value = mem - (int)(performanceCounter2.NextValue());
    label2.Text = "Available Memory: " + (int)(performanceCounter2.NextValue()) + "Mb"; 


}

//using Microsoft visual dll reference in c#
static ulong GetTotalMemoryInBytes()
{
    return new Microsoft.VisualBasic.Devices.ComputerInfo().TotalPhysicalMemory;
}

Answer 1

要获得百分比，请使用：part/total * 100，例如：

var Info = Microsoft.VisualBasic.Devices.ComputerInfo();

var PercentAvailable = Info.AvailablePhysicalMemory*1.0/Info.TotalPhysicalMemory * 100;
var PercentLeft = 100 - PercentAvailable;

// or alternatively:
var PercentLeft = (1 - Info.AvailablePhysicalMemory*1.0/Info.TotalPhysicalMemory) * 100;

Answer 2

(Available memory / Total memory) * 100将是您的百分比。

double percent = ((performanceCounter2.NextValue() * 1.0) / mem) * 100;
label2.Text = "Available Memory: " + percent;

Answer 3

mem / memory将是已用内存的百分比。要获得可用的内存百分比，其1减去其结果。但可能需要double。

Answer 4

对于大多数新机器，总内存（以字节为单位）至少为2GB。这不适合Int32，所以你不会工作。由于你想要四舍五入，你应该使用Math.Ceiling。

ulong total = My.Computer.Info.TotalPhysicalMemory;
ulong available = My.Computer.Info.AvailablePhysicalMemory;
int pctAvailable = (int)Math.Ceiling((double)available * 100 / total);
int pctUsed = (int)Math.Ceiling((double)(total - available) * 100 / total);

你如何围绕一个数字并将其显示为百分比？

4 个答案: