将数据从列表中获取到windows窗体中的网格视图中。

Question

我正在尝试将事件日志文件解析为dataGridView中的Windows Forms。我需要将EventLogEntries public static List<EventLogEntry> _LogEntries { get; private set; }的列表放到网格视图中。我相信dataGridView会起作用，但listBox也可能。

我需要将_LogEntries列表中的数据输入到windows窗体中的网格视图中。我该怎么做？

下面是MainForm.cs for Windows Forms的代码

    private List<Foo> ComputerName = new List<Foo>();
    private List<Foo> EventId = new List<Foo>();
    private List<Foo> EventType = new List<Foo>();
    private List<Foo> SourceName = new List<Foo>();
    private List<Foo> Message = new List<Foo>();

    class Foo : INotifyPropertyChanged
    {
        private string bar_;
        public string Bar
        {
            get { return bar_; }
            set
            {
                bar_ = value;
                NotifyPropertyChanged("Bar");
            }
        }

        public Foo(string bar)
        {
            this.Bar = bar;
        }

        public event PropertyChangedEventHandler PropertyChanged;

        private void NotifyPropertyChanged(string info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }

        public override string ToString()
        {
            return bar_;
        }
    }

    private void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        var bs = new BindingSource(ds, "Events");
        Foo foo1 = new Foo("TEST PC");
        ComputerName.Add(foo1);

        parser.ReadEventLog();
        bs.DataSource = parser._LogEntries;
        //Bind fooList to the dataGridView
        dataGridView1.DataSource = bs;
        //I can see bar1 in the listbox as expected

        this.Invoke(pbHandler, new object[] { 100, 100 });
    }

    // Open the log file
    private void OpenFile()
    {
        string evlLocation = "";
        // Show file open dialog
        if (openFile.ShowDialog() == DialogResult.OK)
        {
            // Create a dataset for binding the data to the grid.
            ds = new DataSet("EventLog Entries");
            ds.Tables.Add("Events");
            ds.Tables["Events"].Columns.Add("ComputerName");
            ds.Tables["Events"].Columns.Add("EventId");
            ds.Tables["Events"].Columns.Add("EventType");
            ds.Tables["Events"].Columns.Add("SourceName");
            ds.Tables["Events"].Columns.Add("Message");
            // Start the processing as a background process
            evlLocation = openFile.FileName;
            parser.setLogLocation(openFile.FileName);
            worker.RunWorkerAsync(openFile.FileName);
        }
    }

解析器类来自下面的EventLogParser.cs

    public static class parser
{
    public static string EvlLocation { get; set; }
    public static string evlLocationManual = "K:\\Event Log\\Test\\Test.evt";
    public static List<EventLogEntry> _LogEntries { get; private set; }

    static parser()
    {
        _LogEntries = new List<EventLogEntry>();
    }

    public static void ReadEventLog()
    {
        EventLog eventLog = new EventLog(EvlLocation);
        EventLogEntryCollection eventLogEntries = eventLog.Entries;
        int eventLogEntryCount = eventLogEntries.Count;
        for (int i = 0; i < eventLogEntries.Count; i++)
        {
            EventLogEntry entry = eventLog.Entries[i];
            //Do Some processing on the entry
        }
        _LogEntries = eventLogEntries.Cast<EventLogEntry>().ToList();
    }

    public static void ParseTest()
    {
        evlLocationManual = "K:\\Event Log\\Test\\Test.evt";
        ReadEventLog();
    }

    public static void setLogLocation(string input)
    {
        EvlLocation = input;
    }
}

public static class EventLogEntryCollection_Container
{
    public static void testCollection()
    {
        string myLogName = "_log";

        // Create an EventLog instance and assign its source.
        EventLog _log = new EventLog();
        _log.Source = "%Program Files (x86)%\\EventLogParser\\ImportedEventLogs\\" + varBank.logInput;

        // Write an informational entry to the event log.
        _log.WriteEntry("Successfully created a new Entry in the Log");
        _log.Close();

        // Create a new EventLog object.
        EventLog myEventLog1 = new EventLog();
        myEventLog1.Log = myLogName;

        // Obtain the Log Entries of "_log".
        EventLogEntryCollection _logCollection = _log.Entries;
        _log.Close();

        // Copy the EventLog entries to Array of type EventLogEntry.
        EventLogEntry[] _logEntryArray = new EventLogEntry[_logCollection.Count];
        _logCollection.CopyTo(_logEntryArray, 0);
        IEnumerator myEnumerator = _logEntryArray.GetEnumerator();
        while (myEnumerator.MoveNext())
        {
            EventLogEntry myEventLogEntry = (EventLogEntry)myEnumerator.Current;
        }
    }
}

我能够修复一些错误，但是现在当我调用ReadEventLog()时，抛出的‘System.ArgumentException类型的异常’发生在System.dll中，但是没有在用户代码中处理

Answer 1

您应该以正确的方式初始化_LogEntries类的静态parser变量：

public static List<EventLogEntry> _LogEntries = new List<EventLogEntry>();

可以在静态构造函数中初始化静态属性，以便使其在使用之前已经初始化。

public static List<EventLogEntry> _LogEntries { get; private set; }

static parser()
{ 
     _LogEntries = new List<EventLogEntry>();
}