小编tom*_*982的帖子

我的程序提取Windows更新,检测版本号并在列表视图中将它们记录到列(KB,版本),但我正在尝试将其更改为ObjectListView,以便我可以对列进行排序.我不能为我的生活找出如何将结果写入ObjectListView并且我尝试的任何东西似乎都工作.这是我目前的代码:

foreach (string file in msu)
{
    string KB = GetKBNumber(file);
    Expand.MSU(file, TempDirectory + "\\" + KB);
    List<string> versions = GetVersionNumbers(TempDirectory + "\\" + KB);

    foreach (string version in versions)
    {
        ListViewItem itm = new ListViewItem(new[] { KB, version });
        olvOutput.Items.Add(itm);
    }
    PerformStep();
}

但它只是将空白数据写入控件.我究竟做错了什么？提前致谢.

编辑:这是olvOutput设计器代码:

        // 
        // olvOutput
        // 
        this.olvOutput.AllColumns.Add(this.olvKBNumber);
        this.olvOutput.AllColumns.Add(this.olvVersion);
        this.olvOutput.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
        | System.Windows.Forms.AnchorStyles.Left) 
        | System.Windows.Forms.AnchorStyles.Right)));
        this.olvOutput.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
        this.olvKBNumber,
        this.olvVersion});
        this.olvOutput.Location = new System.Drawing.Point(18, 12);
        this.olvOutput.Name = "olvOutput";
        this.olvOutput.ShowGroups = false;
        this.olvOutput.Size …

我正在尝试将旧项目从BackgroundWorker转换为异步/等待,但我真的很难让进度条更新.我遵循了这篇文章但却无法像以下一样工作:

http://blogs.msdn.com/b/dotnet/archive/2012/06/06/async-in-4-5-enabling-progress-and-cancellation-in-async-apis.aspx

这是我的代码:

private async void btnStart_Click(object sender, EventArgs e)
{
    btnStart.Enabled = false;
    pb.Show();
    btnCancel.Enabled = true;

    var progressIndicator = new Progress<int>(ReportProgress);
    List<string> updates = Directory.GetFiles(txtInput.Text).ToList();

    try
    {
        await ProcessUpdates(updates, progressIndicator, _cts.Token);
    }
    catch (OperationCanceledException ex)
    {
        MessageBox.Show(ex.Message, "Operation Cancelled");
    }

    btnStart.Enabled = true;
    pb.Hide();
    btnCancel.Enabled = false;


}

async Task<int> ProcessUpdates(List<string> updatePaths, IProgress<int> progress, CancellationToken ct)
{
    int total = updatePaths.Count;

    for (int i = 0; i < updatePaths.Count; i++)
    {
        ct.ThrowIfCancellationRequested();

        string update = updatePaths[i];
        ssFile.Text = …