ReportViewer - modify toolbar?

Question

Do anyone have good ideas of how to modify the toolbar for the WinForms version of the ReportViewer Toolbar? That is, I want to remove some buttons and varius, but it looks like the solution is to create a brand new toolbar instead of modifying the one that is there.

Like, I had to remove export to excel, and did it this way:

  // 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);
    }
  }

A bit trickysh if you ask me.. For removing toolbarbuttons, an possible way was to iterate through the Control array inside the ReportViewer and change the Visible property for the buttons to hide, but it gets reset all the time, so it is not an good way..

WHEN do MS come with an new version btw?

Answer 1

Yeap. You can do that in a little tricky way. I had a task to add more scale factors to zoom report. I did it this way:

    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;
            }
        }
    }