private void BgWorker1_DoWork(object sender, DoWorkEventArgs e)
{
do
{
// InitPerformanceCounters method sends events to the backgroundWorker1_ProgressChanged method
TaskManagerLib.GetProcesses(out Process[] procArray);
int procsAdded = TaskManagerLib.AddNewProcesses(ref procList, procArray, excludedProcesses);
if (procsAdded > 0)
{
bgWorker1.ReportProgress(1);
}
Console.WriteLine($"Processes added : {procsAdded}");
int valsUpdated = TaskManagerLib.UpdateValues(ref procList);
if (valsUpdated > 0)
{
bgWorker1.ReportProgress(1);
}
Console.WriteLine($"Processes Updated : {valsUpdated}");
int procsRemoved = TaskManagerLib.RemoveDeadProcesses(ref procList, procArray);
if (procsRemoved > 0)
{
bgWorker1.ReportProgress(1);
}
Console.WriteLine($"Processes removed : {procsRemoved}");
// use Task.Delay to avoid blocking
Task.Delay(1200).Wait();
}while (true);
}
public ProcInfo(Process process, string name, int processid)
{
try
{
this.Name = name;
this.Pid = processid;
this.RamUsage = 0;
this.CpuUsage = 0;
// time consuming part is creating the performance counters
this.CpuCounter = TaskManagerLib.GetPerfCounterForProcessId(this.Pid, "% Processor Time");
this.RamCounter = TaskManagerLib.GetPerfCounterForProcessId(this.Pid, "Working Set - Private");
this.RamUsage = TaskManagerLib.GetNextValue(this.RamCounter, "ram");
this.CpuUsage = TaskManagerLib.GetNextValue(this.CpuCounter, "cpu");
Console.WriteLine($"ProcInfo object created (Pid): {this.Pid}");
}
catch (Exception ex)
{
Console.WriteLine($"Exception thrown {ex.Message}");
}
}
/* **********************************************************************************
* Summary: Record position of scrollbar. Unbind and rebind procList to the
* Listbox. Set old scrollbar position back so user doesn't get bumped
* back to the top of the list while they are scrolling.
* Return: void. Listbox control updates.
***********************************************************************************/
private void ShowData()
{
// update the listbox UI when background worker reports progress
procListView.Clear();
System.StringComparison stringComparison = System.StringComparison.CurrentCulture;
for (int i = 0; i < procList.Count; i++)
{
procListView.Add(new ProcView(procList[i]));
}
switch (sortState)
{
case SortedBy.NONE:
break;
case SortedBy.NAME:
procListView.Sort((x, y) => string.Compare(x.Name, y.Name, stringComparison));
break;
case SortedBy.CPU:
procListView.Sort((x, y) => y.CpuUsage.CompareTo(x.CpuUsage));
break;
case SortedBy.RAM:
procListView.Sort((x, y) => y.RamUsage.CompareTo(x.RamUsage));
break;
}
// record old position of scrollbar
var offset = this.listBox1.TopIndex;
this.listBox1.DataSource = null;
TaskManagerLib.FilterByText(ref procListView, this.textBoxFilter.Text);
this.listBox1.DataSource = procListView;
// set scrollbar back to original offset so user can scroll while its updating
// without the scrollbar going back up to the top
this.listBox1.TopIndex = offset;
}
