ReportViewer - 修改工具栏？

Question

有没有人对如何修改 WinForms 版本的 ReportViewer 工具栏的工具栏有好主意？
也就是说，我想删除一些按钮和各种按钮，但看起来解决方案是创建一个全新的工具栏，而不是修改现有的工具栏。

就像，我不得不删除导出到 excel，并这样做:

  // Disable excel export
  foreach (RenderingExtension extension in lr.ListRenderingExtensions()) {
    if (extension.Name == "Excel") {
      //extension.Visible = false; // Property is readonly...
      FieldInfo fi = extension.GetType().GetField("m_isVisible", BindingFlags.Instance | BindingFlags.NonPublic);
      fi.SetValue(extension, false);
    }
  }

如果你问我，有点棘手。
对于删除工具栏按钮，一种可能的方法是遍历 ReportViewer 内的 Control 数组并更改按钮的 Visible 属性以隐藏，但它一直被重置，所以这不是一个好方法..

顺便说一句，MS 什么时候发布新版本？

Answer 1

是的。你可以用一种有点棘手的方式做到这一点。
我有一项任务是为缩放报告添加更多比例因子。我是这样做的:

    private readonly string[] ZOOM_VALUES = { "25%", "50%", "75%", "100%", "110%", "120%", "125%", "130%", "140%", "150%", "175%", "200%", "300%", "400%", "500%" };
    private readonly int DEFAULT_ZOOM = 3;
    //--

    public ucReportViewer()
    {
        InitializeComponent();   
        this.reportViewer1.ProcessingMode = ProcessingMode.Local;

        setScaleFactor(ZOOM_VALUES[DEFAULT_ZOOM]);

        Control[] tb = reportViewer1.Controls.Find("ReportToolBar", true);

        ToolStrip ts;
        if (tb != null && tb.Length > 0 && tb[0].Controls.Count > 0 && (ts = tb[0].Controls[0] as ToolStrip) != null)
        {
            //here we go if our trick works (tested at .NET Framework 2.0.50727 SP1)
            ToolStripComboBox tscb = new ToolStripComboBox();
            tscb.DropDownStyle = ComboBoxStyle.DropDownList;

            tscb.Items.AddRange(ZOOM_VALUES);                
            tscb.SelectedIndex = 3; //100%

            tscb.SelectedIndexChanged += new EventHandler(toolStripZoomPercent_Click);

            ts.Items.Add(tscb);
        }
        else
        {                
            //if there is some problems - just use context menu
            ContextMenuStrip cmZoomMenu = new ContextMenuStrip();

            for (int i = 0; i < ZOOM_VALUES.Length; i++)
            {
                ToolStripMenuItem tsmi = new ToolStripMenuItem(ZOOM_VALUES[i]);

                tsmi.Checked = (i == DEFAULT_ZOOM);
                //tsmi.Tag = (IntPtr)cmZoomMenu;
                tsmi.Click += new EventHandler(toolStripZoomPercent_Click);

                cmZoomMenu.Items.Add(tsmi);
            }

            reportViewer1.ContextMenuStrip = cmZoomMenu;
        }                    
    }

    private bool setScaleFactor(string value)
    {
        try
        {
            int percent = Convert.ToInt32(value.TrimEnd('%'));

            reportViewer1.ZoomMode = ZoomMode.Percent;
            reportViewer1.ZoomPercent = percent;

            return true;
        }
        catch
        {
            return false;
        }
    }


    private void toolStripZoomPercent_Click(object sender, EventArgs e)
    {
        ToolStripMenuItem tsmi = sender as ToolStripMenuItem;
        ToolStripComboBox tscb = sender as ToolStripComboBox;

        if (tscb != null && tscb.SelectedIndex > -1)
        {
            setScaleFactor(tscb.Items[tscb.SelectedIndex].ToString());
        }
        else if (tsmi != null)
        {
            if (setScaleFactor(tsmi.Text))
            {
                foreach (ToolStripItem tsi in tsmi.Owner.Items)
                {
                    ToolStripMenuItem item = tsi as ToolStripMenuItem;

                    if (item != null && item.Checked)
                    {
                        item.Checked = false;
                    }
                }

                tsmi.Checked = true;
            }
            else
            {
                tsmi.Checked = false;
            }
        }
    }