if (!f1.IsDisposed)
{
Thread.Sleep(1000);
f1.Invoke(new Action(() => myData.Add("Cpu Temeprature --- " + sensor.Value.ToString())));
}
例外是在线：
f1.Invoke(new Action(() => myData.Add("Cpu Temeprature --- " + sensor.Value.ToString())));
在课程的顶部，我做了：
public static Form1 form1;
然后：
public Core(Form1 f)
{
form1 = f;
我这样做的原因是在这个类中我获得了CPU和GPU的温度。这是完整的类代码，可以更轻松地了解我在做什么以及如何使用form1变量：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using OpenHardwareMonitor.Hardware;
using System.Diagnostics;
using DannyGeneral;
using System.Windows.Forms;
using System.Threading;
using System.Management;
namespace HardwareMonitoring
{
class Core
{
public static Form1 form1;
private static List<float?> cpuSensorValues = new List<float?>();
private static List<float?> gpuSensorValues = new List<float?>();
Computer myComputer;
Computer computer;
public Core(Form1 f)
{
form1 = f;
myComputer = new Computer();
myComputer.CPUEnabled = true;
myComputer.FanControllerEnabled = true;
myComputer.MainboardEnabled = true;
myComputer.Open();
computer = new Computer();
computer.Open();
computer.GPUEnabled = true;
OpenHardwareMonitor.Hardware.ISensor isss;
Hardwares hwsd;
OpenHardwareMonitor.Hardware.ISensor ist;
}
public float? cpuView(bool pause , CpuTemperature cpuTemp , Form1 f1 , List<string> myData , float? myCpuTemp , Button b1, decimal numeric)
{
try
{
if (pause == true)
{
}
else
{
Trace.WriteLine("");
foreach (var hardwareItem in myComputer.Hardware)
{
if (hardwareItem.HardwareType == HardwareType.CPU)
{
hardwareItem.Update();
foreach (IHardware subHardware in hardwareItem.SubHardware)
subHardware.Update();
foreach (var sensor in hardwareItem.Sensors)
{
cpuTemp.SetValue("sensor", sensor.Value.ToString());
if (sensor.SensorType == SensorType.Temperature)
{
sensor.Hardware.Update();
cpuTemp.GetValue("sensor", sensor.Value.ToString());
if (!f1.IsDisposed)
{
Thread.Sleep(1000);
f1.Invoke(new Action(() => myData.Add("Cpu Temeprature --- " + sensor.Value.ToString())));
}
myCpuTemp = sensor.Value;
//if (sensor.Value > 60)
//{
cpuSensorValues.Add(sensor.Value);
if (cpuSensorValues.Count == 300 && sensor.Value >= (float)numeric)
{
float a = ComputeStats(cpuSensorValues).Item1;
float b = ComputeStats(cpuSensorValues).Item2;
float c = ComputeStats(cpuSensorValues).Item3;
Logger.Write("********************************");
Logger.Write("CPU Minimum Temperature Is ===> " + a);
Logger.Write("CPU Maximum Temperature Is ===> " + b);
Logger.Write("CPU Average Temperature Is ===> " + c);
Logger.Write("********************************" + Environment.NewLine);
cpuSensorValues = new List<float?>();
}
b1.Enabled = true;
//}
break;
}
}
}
}
}
}
catch(Exception err)
{
Logger.Write("There was an exception: " + err.ToString());
}
return myCpuTemp;
}
public float? gpuView(bool pause, List<string> myData, float? myGpuTemp, Button b1, decimal numericupdown)
{
try
{
if (pause == true)
{
}
else
{
foreach (var hardwareItem in computer.Hardware)
{
if (form1.videoCardType("ati", "nvidia") == true)
{
HardwareType htype = HardwareType.GpuNvidia;
if (hardwareItem.HardwareType == htype)
{
foreach (var sensor in hardwareItem.Sensors)
{
if (sensor.SensorType == SensorType.Temperature)
{
sensor.Hardware.Update();
if (sensor.Value.ToString().Length > 0)
{
/* else if (UpdatingLabel(sensor.Value.ToString(), label16.Text.Substring(0, label16.Text.Length - 1)))
{
// Label8 = GpuText;
}*/
//myData = new List<string>();
//this.Invoke(new Action(() => data = new List<string>()));
if (!form1.IsDisposed)
{
form1.Invoke(new Action(() => myData.Add("Gpu Temeprature --- " + sensor.Value.ToString())));
}
//this.Invoke(new Action(() => listBox1.DataSource = null));
//this.Invoke(new Action(() => listBox1.DataSource = data));
//form1.Invoke(new Action(() => lb1.DataSource = myData));
//sensor.Value.ToString() + "c";
myGpuTemp = sensor.Value;
//label8.Visible = true;
}
//if (sensor.Value > 60)
//{
gpuSensorValues.Add(sensor.Value);
if (gpuSensorValues.Count == 30 && sensor.Value >= (float)numericupdown)
{
float a = ComputeStats(gpuSensorValues).Item1;
float b = ComputeStats(gpuSensorValues).Item2;
float c = ComputeStats(gpuSensorValues).Item3;
Logger.Write("********************************");
Logger.Write("GPU Minimum Temperature Is ===> " + a);
Logger.Write("GPU Maximum Temperature Is ===> " + b);
Logger.Write("GPU Average Temperature Is ===> " + c);
Logger.Write("********************************" + Environment.NewLine);
gpuSensorValues = new List<float?>();
}
b1.Enabled = true;
//}
//form1.Select();
}
}
}
}
else
{
HardwareType htype = HardwareType.GpuAti;
if (hardwareItem.HardwareType == htype)
{
foreach (var sensor in hardwareItem.Sensors)
{
if (sensor.SensorType == SensorType.Temperature)
{
sensor.Hardware.Update();
if (sensor.Value.ToString().Length > 0)
{
myGpuTemp = sensor.Value;
//label8.Visible = true;
}
if (sensor.Value > 60)
{
Logger.Write("The Current Ati GPU Temperature Is ===> " + sensor.Value);
b1.Enabled = true;
}
form1.Select();
}
}
}
}
}
}
}
catch (Exception err)
{
Logger.Write("There was an exception: " + err.ToString());
}
return myGpuTemp;
}
// Returns min/max/average, ignoring null elements
Tuple<float, float, float> ComputeStats(IEnumerable<float?> values)
{
float min = float.MaxValue;
float max = float.MinValue;
float total = 0.0f;
int count = 0;
foreach (var value in values)
{
if (value.HasValue)
{
min = Math.Min(min, value.Value);
max = Math.Max(max, value.Value);
total += value.Value;
++count;
}
}
return Tuple.Create(min, max, total / count);
}
}
}
这是异常消息：
3/1/2014--9:50 PM ==> There was an exception: System.InvalidOperationException: Invoke or BeginInvoke cannot be called on a control until the window handle has been created.
at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
at System.Windows.Forms.Control.Invoke(Delegate method)
at HardwareMonitoring.Core.cpuView(Boolean pause, CpuTemperature cpuTemp, Form1 f1, List`1 myData, Nullable`1 myCpuTemp, Button b1, Decimal numeric) in d:\C-Sharp\HardwareMonitoring\HardwareMonitoring\Hardwaremonitoring\Core.cs:line 69
它有点长，但它全部连接，这就是为什么我还添加了类的完整代码。
答案 0 :(得分：2)
您可以使用IsHandleCreated检查是否可以拨打Invoke或BeginInvoke。从MSDN引用：
如果尚未创建控制手柄，则必须等到它 已在调用Invoke或BeginInvoke之前创建。通常，这 只有在构造函数中创建后台线程时才会发生 应用程序的主要形式（如Application.Run（新增） MainForm（）），在表单显示之前或Application.Run有 被叫了。
请在致电IsHandleCreated之前检查Invoke：
if (f1.IsHandleCreated && !f1.IsDisposed)
{
Thread.Sleep(1000);
f1.Invoke(new Action(() => myData.Add("Cpu Temeprature --- " + sensor.Value.ToString())));
}