You can change the Designer toolbox items to show specific controls or remove a control from the toolbox.

Add Toolbox panel

The code example below demonstrates adding a Toolbox panel to the Designer using the Designer.Toolbox property.

using GrapeCity.ActiveReports.Design;
using GrapeCity.ActiveReports.Design.ReportExplorer;
class MyForm : Form
{
  MyForm()
  {
    var _designer = new Designer() { Dock = DockStyle.Fill };
    var toolbox = new Toolbox { Dock = DockStyle.Right };
    _designer.Toolbox = toolbox;
    Controls.Add(_designer);
    Controls.Add(toolbox);
  }
}

Control the Toolbox items

With the Toolbox.ConfigureToolboxItems method, you can control items that are available in the Toolbox.

You first need to define a state provider as demonstrated in the sample below.

class ToolboxStateProvider : IToolboxUser
{
   public bool GetToolSupported(ToolboxItem tool)
    {
        if (tool.TypeName == "GrapeCity.ActiveReports.Design.DdrDesigner.Designers.BandedList.BandedListDesigner")
            return true;
        return false;
    }
    public void ToolPicked(ToolboxItem tool)  { }
}

After the state provider is configured, you need to configure the Toolbox with it as demonstrated in the sample below.

toolbox.ConfigureToolboxItems(new ToolboxStateProvider());

Remove an item from the Toolbox

You can use the Toolbox.RemoveToolboxItem method together with the Toolbox.GetToolboxItems method to remove an item from the Toolbox.

private static void RemoveBandedListFromToolBox(Toolbox toolbox)
{
  //Find the item to be removed.
  var bandedList = toolbox.GetToolboxItems()
      .OfType<ToolboxItem>()
      .Single(items => items.TypeName.EndsWith("BandedListDesigner"));
  //Remove the banded list item from the toolbox.
  toolbox.RemoveToolboxItem(items);
}