vb.net 如何获取CPU使用率？
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How to get CPU usage?
提问by Mark
How do I get the cpu usage percentage to display in the label on a form?
如何让 cpu 使用百分比显示在表单的标签中？
回答by codekaizen
Import Namespace System.Diagnostics
' ...
Dim cpu as New PerformanceCounter()
With cpu
.CategoryName = "Processor"
.CounterName = "% Processor Time"
.InstanceName = "_Total"
End With
' ...
myLabel.Text = cpu.NextValue()
回答by Index
codekaizen said:
codekaizen 说：
Import Namespace System.Diagnostics
Dim cpu as New PerformanceCounter()
With cpu
.CategoryName = "Processor"
.CounterName = "% Processor Time"
.InstanceName = "_Total"
End With
myLabel.Text = cpu.NextValue()
In case you end up with "0" (probably because you just created the PerformanceCounter and then directly used it) you need to add 2 lines as the PerformanceCounter need some time to work:
如果您最终得到“0”（可能是因为您刚刚创建了 PerformanceCounter 然后直接使用它），您需要添加 2 行，因为 PerformanceCounter 需要一些时间才能工作：
System.Threading.Thread.Sleep(1000)
myLabel.Text= cpu.NextValue
To Avoid that sleep you might want to declare the PerformanceCounter in your Class instead of your Sub/Function and set the probs in the forms loading event.
为了避免这种睡眠，您可能需要在类中声明 PerformanceCounter 而不是 Sub/Function 并在表单加载事件中设置概率。
回答by Gerrie Schenck
Look here: How to get the CPU Usage C#
看这里：如何获取 CPU 使用率 C#
Should be easy to translate to VB.Net
应该很容易翻译成VB.Net
回答by Sean Turner
You can do it in .NET at least using the WMI API. WMI allows you to get a bunch of Windows Management type data such as CPU usage, hardare specs, etc.
您至少可以使用 WMI API 在 .NET 中完成。WMI 允许您获取一堆 Windows 管理类型的数据，例如 CPU 使用率、硬件规格等。
http://www.aspfree.com/c/a/VB.NET/WMI-Programming-with-Visual-BasicNET-What-is-the-WQL/
http://www.aspfree.com/c/a/VB.NET/WMI-Programming-with-Visual-BasicNET-What-is-the-WQL/
