MultiSelect

 using cAlgo.API;
 namespace cAlgo.Robots
 {
     [Robot(AccessRights = AccessRights.None, AddIndicators = true)]
     public class MultiSelectTest : Robot
     {
         private MultiSelect _multiSelect;
         [Parameter(DefaultValue = false)]
         public bool Styled { get; set; }
         protected override void OnStart()
         {
             _multiSelect = new MultiSelect();
             if (Styled)
             {
                 _multiSelect.BackgroundColor = Color.Red;
                 _multiSelect.FontWeight = FontWeight.UltraBold;
                 _multiSelect.ForegroundColor = Color.Yellow;
                 _multiSelect.FontSize = 40;
                 _multiSelect.FontFamily = "Comic Sans MS";
             }
             for (var i = 0; i < 10; i++)
             {
                 _multiSelect.AddItem($"Item {i}");
             }
             _multiSelect.SelectedItemsChanged += args => Print($"OnSelectedItemsChanged: {string.Join(", ", _multiSelect.SelectedItems)}");
             var addItemTextBox = new TextBox();
             var addItemButton = new Button() { Text = "Add Item" };
             addItemButton.Click += args =>
             {
                 if (string.IsNullOrWhiteSpace(addItemTextBox.Text))
                     return;
                 Print($"Add Result of {addItemTextBox.Text}: {_multiSelect.AddItem(addItemTextBox.Text)}");
             };
             var removeItemTextBox = new TextBox();
             var removeItemButton = new Button() { Text = "Remove Item" };
             removeItemButton.Click += args =>
             {
                 if (string.IsNullOrWhiteSpace(removeItemTextBox.Text))
                     return;
                 Print($"Remove Result of {removeItemTextBox.Text}: {_multiSelect.RemoveItem(removeItemTextBox.Text)}");
             };
             var selectItemTextBox = new TextBox();
             var selectItemButton = new Button() { Text = "Select Item" };
             selectItemButton.Click += args =>
             {
                 if (string.IsNullOrWhiteSpace(selectItemTextBox.Text))
                     return;
                 Print($"Select Result of {selectItemTextBox.Text}: {_multiSelect.SelectItem(selectItemTextBox.Text)}");
             };
             var unselectItemTextBox = new TextBox();
             var unselectItemButton = new Button() { Text = "Unselect Item" };
             unselectItemButton.Click += args =>
             {
                 if (string.IsNullOrWhiteSpace(unselectItemTextBox.Text))
                     return;
                 Print($"Unselect Result of {unselectItemTextBox.Text}: {_multiSelect.UnselectItem(unselectItemTextBox.Text)}");
             };
             var selectAllItemsButton = new Button() { Text = "Select All Items" };
             selectAllItemsButton.Click += args =>
             {
                 _multiSelect.SelectAllItems();
             };
             var unselectAllItemsButton = new Button() { Text = "Unselect All Items" };
             unselectAllItemsButton.Click += args =>
             {
                 _multiSelect.UnselectAllItems();
             };
             var showItemsButton = new Button() { Text = "Show Items" };
             showItemsButton.Click += args => Print($"Items: {string.Join(", ", _multiSelect.Items)}");
             var showSelectedItemsButton = new Button() { Text = "Show Selected Items" };
             showSelectedItemsButton.Click += args => Print($"Selected Items: {string.Join(", ", _multiSelect.SelectedItems)}");
             var panel = new StackPanel() { Orientation = Orientation.Vertical, HorizontalAlignment = HorizontalAlignment.Center, VerticalAlignment = VerticalAlignment.Center };
             panel.AddChild(_multiSelect);
             panel.AddChild(addItemTextBox);
             panel.AddChild(addItemButton);
             panel.AddChild(removeItemTextBox);
             panel.AddChild(removeItemButton);
             panel.AddChild(selectItemTextBox);
             panel.AddChild(selectItemButton);
             panel.AddChild(unselectItemTextBox);
             panel.AddChild(unselectItemButton);
             panel.AddChild(selectAllItemsButton);
             panel.AddChild(unselectAllItemsButton);
             panel.AddChild(showItemsButton);
             panel.AddChild(showSelectedItemsButton);
             Chart.AddControl(panel);
         }
     }
 }

 import clr
 clr.AddReference("cAlgo.API")
 # Import cAlgo API types
 from cAlgo.API import *
 # Import trading wrapper functions
 from robot_wrapper import *
 class Test():
     def on_add_item_button_clicked(self, args):
         if self.addItemTextBox.Text is None:
             return
         print(f"Add Result of {self.addItemTextBox.Text}: {self.multiSelect.AddItem(self.addItemTextBox.Text)}")
     def on_remove_item_button_clicked(self, args):
         if self.removeItemTextBox.Text is None:
             return
         print(f"Remove Result of {self.removeItemTextBox.Text}: {self.multiSelect.RemoveItem(self.removeItemTextBox.Text)}")
     def on_select_item_button_clicked(self, args):
         if self.selectItemTextBox.Text is None:
             return
         print(f"Select Result of {self.selectItemTextBox.Text}: {self.multiSelect.SelectItem(self.selectItemTextBox.Text)}")
     def on_unselect_item_button_clicked(self, args):
         if self.unselectItemTextBox.Text is None:
             return
         print(f"Unselect Result of {self.unselectItemTextBox.Text}: {self.multiSelect.UnselectItem(self.unselectItemTextBox.Text)}")        
     def on_start(self):
         self.multiSelect = MultiSelect()
         # Styled is a boolean parameter defined in C# file of cBot
         if api.Styled:
             self.multiSelect.BackgroundColor = Color.Red
             self.multiSelect.FontWeight = FontWeight.UltraBold
             self.multiSelect.ForegroundColor = Color.Yellow
             self.multiSelect.FontSize = 40
             self.multiSelect.FontFamily = "Comic Sans MS"
         for i in range(10):
             self.multiSelect.AddItem(f"Item {i}")
         self.multiSelect.SelectedItemsChanged += lambda args: print(f"OnSelectedItemsChanged: {", ".join(self.multiSelect.SelectedItems)}")
         self.addItemTextBox = TextBox()
         addItemButton = Button()
         addItemButton.Text = "Add Item"
         addItemButton.Click += self.on_add_item_button_clicked
         self.removeItemTextBox = TextBox()
         removeItemButton = Button()
         removeItemButton.Text = "Remove Item"
         removeItemButton.Click += self.on_remove_item_button_clicked
         self.selectItemTextBox = TextBox()
         selectItemButton = Button()
         selectItemButton.Text = "Select Item"
         selectItemButton.Click += self.on_select_item_button_clicked
         self.unselectItemTextBox = TextBox()
         unselectItemButton = Button()
         unselectItemButton.Text = "Unselect Item"
         unselectItemButton.Click += self.on_unselect_item_button_clicked
         selectAllItemsButton = Button()
         selectAllItemsButton.Text = "Select All Items"
         selectAllItemsButton.Click += lambda _: self.multiSelect.SelectAllItems()
         unselectAllItemsButton = Button()
         unselectAllItemsButton.Text = "Unselect All Items"
         unselectAllItemsButton.Click += lambda _: self.multiSelect.UnselectAllItems()
         showItemsButton = Button()
         showItemsButton.Text = "Show Items"
         showItemsButton.Click += lambda _: print(f"Items: {", ".join(self.multiSelect.Items)}")
         showSelectedItemsButton = Button()
         showSelectedItemsButton.Text = "Show Selected Items"
         showSelectedItemsButton.Click += lambda _: print(f"Selected Items: {", ".join(self.multiSelect.SelectedItems)}")
         panel = StackPanel()
         panel.Orientation = Orientation.Vertical
         panel.HorizontalAlignment = HorizontalAlignment.Center
         panel.VerticalAlignment = VerticalAlignment.Center
         panel.AddChild(self.multiSelect)
         panel.AddChild(self.addItemTextBox)
         panel.AddChild(addItemButton)
         panel.AddChild(self.removeItemTextBox)
         panel.AddChild(removeItemButton)
         panel.AddChild(self.selectItemTextBox)
         panel.AddChild(selectItemButton)
         panel.AddChild(self.unselectItemTextBox)
         panel.AddChild(unselectItemButton)
         panel.AddChild(selectAllItemsButton)
         panel.AddChild(unselectAllItemsButton)
         panel.AddChild(showItemsButton)
         panel.AddChild(showSelectedItemsButton)
         api.Chart.AddControl(panel)