Hiding the extra column

[Andrew Ellis]

Hi

I have added the advanced treeview to my application, and have created a table with 2 columns. Everything works really well, and I'm very pleased with the control.

The issue I have is that there is a third column present which I cannot reference. Is there a way to hide the third column?

Andrew

[Lee]

Hi,
Add an example and an image depicting the issue, so it'll be easier to help you.

[Andrew Ellis]

Hi Lee,

Thanks for getting back to me. I have attached a picture to clarify the issue. The area in yellow is what I want to get rid of.

I have pasted my code at the bottom of the message.

Andrew

MainForm.cs

/*
 * Created by SharpDevelop.
 * User: Andrew
 * Date: 16/09/2015
 * Time: 11:42
 * 
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Aga.Controls.Tree;
using Aga.Controls.Tree.NodeControls;
using Aga.Controls;

namespace TestApplication
{       
    /// <summary>
    /// Description of MainForm.
    /// </summary>
    public partial class MainForm : Form
    {

        private class ToolTipProvider : IToolTipProvider
        {
            public string GetToolTip(TreeNodeAdv node, NodeControl nodeControl)
            {
                return "Drag&Drop nodes to move them";
            }
        }

        private TreeModel _model;
        private Font _childFont;

        private int count = 0;

        MetaDisplayModel meta_model;

        List <MetaItems> root_items;

        List <MetaItems> _metadata;

        public MainForm()
        {
            //
            // The InitializeComponent() call is required for Windows Forms designer support.
            //
            InitializeComponent();

            _name.ToolTipProvider = new ToolTipProvider();
            _value.ToolTipProvider = new ToolTipProvider();
            _model = new TreeModel();
            _childFont = new Font(_tree.Font.FontFamily, 18, FontStyle.Bold);

            meta_model = new MetaDisplayModel();

            _tree.Model = new SortedTreeModel(meta_model);          

            timer1.Start();

            root_items = meta_model._RootItems;

        }

        void Timer1Tick(object sender, EventArgs e)
        {                       
            count++;

            try
            {               
                _metadata = meta_model._itemsDisplayed;
                _metadata[0].Value = count * 10;
                _metadata[1].Value = count;

                _tree.Invalidate();
            }

            catch (Exception ex)
            {

            }
        }
        void Button1Click(object sender, EventArgs e)
        {
            try
            {
                _metadata.Add(new MetaData("Test", _metadata[0].Parent, _metadata[0].Owner));

                meta_model.Refresh();                       
            }

            catch (Exception ex)
            {

            }

        }

    }
}

MetaItems.cs

/*
 * Created by SharpDevelop.
 * User: Andrew
 * Date: 29/09/2015
 * Time: 09:57
 * 
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;
using Aga.Controls.Tree;
using Aga.Controls.Tree.NodeControls;
using Aga.Controls;

namespace TestApplication
{
    /// <summary>
    /// Description of MetaItems.
    /// </summary>
    public abstract class MetaItems
    {   
        string _name;       
        public string ItemName
        {
            get { return _name; }
            set { _name = value; }
        }

        string _value;
        public string ItemValue
        {
            get; //{ return _value; }
            set;// { _value = value; }
        }   

        private MetaItems _parent;
        public MetaItems Parent
        {
            get { return _parent; }
            set { _parent = value; }
        }

        public abstract string Name
        {
            get;
            set;
        }

        public abstract int Value
        {
            get;
            set;            
        }

        private MetaDisplayModel _owner;
        public MetaDisplayModel Owner
        {
            get { return _owner; }
            set { _owner = value; }
        }
    }

    public class RootItem : MetaItems
    {
        public RootItem(string name, MetaDisplayModel owner)
        {
            ItemName = name;            
            Owner = owner;
        }

        public override string Name
        {
            get
            {
                return ItemName;
            }
            set
            {
            }
        }

        public override int Value
        {
            get; //{ return _value; }
            set;// { _value = value; }
        }   
    }

    public class MetaData : MetaItems
    {
        public MetaData(string name, MetaItems parent, MetaDisplayModel owner)
        {
            ItemName = name;
            Parent = parent;
            Owner = owner;
        }

        public override string Name
        {
            get
            {
                return ItemName;
            }
            set
            {

            }
        }

        public override int Value
        {
            get { return Convert.ToInt32(ItemValue); }
            set { ItemValue = value.ToString(); }
        }

    }   
}

MetaDisplayModel.cs

/*
 * Created by SharpDevelop.
 * User: Andrew
 * Date: 29/09/2015
 * Time: 11:20
 * 
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
using System;
using System.IO;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using Aga.Controls.Tree;
using Aga.Controls.Tree.NodeControls;
using Aga.Controls;

namespace TestApplication
{
    /// <summary>
    /// Description of MetaDisplayModel.
    /// </summary>
    public class MetaDisplayModel: ITreeModel
    {
        public List<MetaItems> _itemsToDisplay;
        private Dictionary<string, List<MetaItems>> _cache = new Dictionary<string, List<MetaItems>>();

        public List<MetaItems> _itemsDisplayed
        {
            get
            {
                return _cache["Metadata set"];
            }

            set
            {
                _cache["Metadata set"] = _itemsDisplayed;
            }

        }

        public List<MetaItems> _RootItems
        {
            get
            {
                return _cache["ROOT"];
            }

            set
            {
                //_cache["ROOT"] = _itemsDisplayed;
            }

        }

        public MetaDisplayModel()
        {
            _itemsToDisplay = new List<MetaItems>();    

        }

        private TreePath GetPath(MetaItems item)
        {
            if (item == null)
                return TreePath.Empty;
            else
            {
                Stack<object> stack = new Stack<object>();
                while (item != null)
                {
                    stack.Push(item);
                    item = item.Parent;
                }
                return new TreePath(stack.ToArray());
            }
        }

        public System.Collections.IEnumerable GetChildren(TreePath treePath)
        {
            string[] meta_names = new string[7] {"Meta 1", "Meta 2", "Meta 3", "Meta 4", "Meta 5", "Meta 6", "Meta 7"};
            List<MetaItems> items = null;
            if (treePath.IsEmpty())
            {
                if (_cache.ContainsKey("ROOT"))
                    items = _cache["ROOT"];
                else
                {
                    items = new List<MetaItems>();
                    _cache.Add("ROOT", items);

                    items.Add(new RootItem("Metadata blank", this));
                    items.Add(new RootItem("Metadata set", this));
                }
            }

            else
            {
                MetaItems parent = treePath.LastNode as MetaItems;
                if (parent != null)
                {
                    if (_cache.ContainsKey(parent.ItemName))
                        items = _cache[parent.ItemName];
                    else
                    {
                        if (parent.ItemName == "Metadata set")
                        {
                            items = new List<MetaItems>();
                            try
                            {
                                foreach (string str in meta_names)
                                {
                                    items.Add(new MetaData(str, parent, this));                                 
                                }
                            }
                            catch (IOException)
                            {
                                return null;
                            }
                            _cache.Add(parent.ItemName, items);
                            _itemsToDisplay.AddRange(items);

                        }
                    }
                }
            }

            return items;
        }

        public bool IsLeaf(TreePath treePath)
        {
            return treePath.LastNode is MetaData;
        }

        public event EventHandler<TreeModelEventArgs> NodesChanged;
        internal void OnNodesChanged(MetaItems item)
        {
            if (NodesChanged != null)
            {
                TreePath path = GetPath(item.Parent);
                NodesChanged(this, new TreeModelEventArgs(path, new object[] { item }));
            }
        }

        public event EventHandler<TreeModelEventArgs> NodesInserted;
        public event EventHandler<TreeModelEventArgs> NodesRemoved;
        public event EventHandler<TreePathEventArgs> StructureChanged;
        public void OnStructureChanged(TreePathEventArgs args)
        {
            if (StructureChanged != null)
            {
                StructureChanged(this, args);               
            }
        }

        public virtual void Refresh()
        {
            OnStructureChanged(new TreePathEventArgs());
        }

    }   

}

[Laurent Nicot]

Missing MainForm.Designer.cs file to see how _tree is defined

[Andrew Ellis]

Hi I have pasted MainForm.Designer.cs below.

Andrew

/*
 * Created by SharpDevelop.
 * User: Andrew
 * Date: 16/09/2015
 * Time: 11:42
 * 
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */
namespace TestApplication
{
    partial class MainForm
    {
        /// <summary>
        /// Designer variable used to keep track of non-visual components.
        /// </summary>
        private System.ComponentModel.IContainer components = null;
        private Aga.Controls.Tree.NodeControls.NodeTextBox nodeTextBox1;
        private Aga.Controls.Tree.NodeControls.NodeTextBox nodeTextBox2;
        private Aga.Controls.Tree.TreeViewAdv _tree;
        private Aga.Controls.Tree.NodeControls.NodeTextBox _name;
        private System.Windows.Forms.Timer timer1;
        private Aga.Controls.Tree.NodeControls.NodeTextBox _value;
        private Aga.Controls.Tree.TreeColumn treeColumn1;
        private Aga.Controls.Tree.TreeColumn treeColumn2;
        private System.Windows.Forms.Button button1;

        /// <summary>
        /// Disposes resources used by the form.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing) {
                if (components != null) {
                    components.Dispose();
                }
            }
            base.Dispose(disposing);
        }

        /// <summary>
        /// This method is required for Windows Forms designer support.
        /// Do not change the method contents inside the source code editor. The Forms designer might
        /// not be able to load this method if it was changed manually.
        /// </summary>
        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.nodeTextBox1 = new Aga.Controls.Tree.NodeControls.NodeTextBox();
            this.nodeTextBox2 = new Aga.Controls.Tree.NodeControls.NodeTextBox();
            this._tree = new Aga.Controls.Tree.TreeViewAdv();
            this.treeColumn1 = new Aga.Controls.Tree.TreeColumn();
            this.treeColumn2 = new Aga.Controls.Tree.TreeColumn();
            this._name = new Aga.Controls.Tree.NodeControls.NodeTextBox();
            this._value = new Aga.Controls.Tree.NodeControls.NodeTextBox();
            this.timer1 = new System.Windows.Forms.Timer(this.components);
            this.button1 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // nodeTextBox1
            // 
            this.nodeTextBox1.IncrementalSearchEnabled = true;
            this.nodeTextBox1.LeftMargin = 3;
            this.nodeTextBox1.ParentColumn = null;
            // 
            // nodeTextBox2
            // 
            this.nodeTextBox2.IncrementalSearchEnabled = true;
            this.nodeTextBox2.LeftMargin = 3;
            this.nodeTextBox2.ParentColumn = null;
            // 
            // _tree
            // 
            this._tree.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._tree.AutoRowHeight = true;
            this._tree.BackColor = System.Drawing.SystemColors.Window;
            this._tree.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
            this._tree.Columns.Add(this.treeColumn1);
            this._tree.Columns.Add(this.treeColumn2);
            this._tree.Cursor = System.Windows.Forms.Cursors.Default;
            this._tree.DefaultToolTipProvider = null;
            this._tree.DisplayDraggingNodes = true;
            this._tree.DragDropMarkColor = System.Drawing.Color.Black;
            this._tree.GridLineStyle = ((Aga.Controls.Tree.GridLineStyle)((Aga.Controls.Tree.GridLineStyle.Horizontal | Aga.Controls.Tree.GridLineStyle.Vertical)));
            this._tree.LineColor = System.Drawing.SystemColors.ControlDark;
            this._tree.LoadOnDemand = true;
            this._tree.Location = new System.Drawing.Point(12, 12);
            this._tree.Model = null;
            this._tree.Name = "_tree";
            this._tree.NodeControls.Add(this._name);
            this._tree.NodeControls.Add(this._value);
            this._tree.SelectedNode = null;
            this._tree.SelectionMode = Aga.Controls.Tree.TreeSelectionMode.MultiSameParent;
            this._tree.ShowNodeToolTips = true;
            this._tree.Size = new System.Drawing.Size(375, 223);
            this._tree.TabIndex = 1;
            this._tree.UseColumns = true;
            // 
            // treeColumn1
            // 
            this.treeColumn1.Header = "Name";
            this.treeColumn1.SortOrder = System.Windows.Forms.SortOrder.None;
            this.treeColumn1.TooltipText = "_name";
            this.treeColumn1.Width = 150;
            // 
            // treeColumn2
            // 
            this.treeColumn2.Header = "Value";
            this.treeColumn2.SortOrder = System.Windows.Forms.SortOrder.None;
            this.treeColumn2.TooltipText = "_value";
            this.treeColumn2.Width = 150;
            // 
            // _name
            // 
            this._name.DataPropertyName = "Name";
            this._name.IncrementalSearchEnabled = true;
            this._name.LeftMargin = 3;
            this._name.ParentColumn = this.treeColumn1;
            // 
            // _value
            // 
            this._value.DataPropertyName = "ItemValue";
            this._value.IncrementalSearchEnabled = true;
            this._value.LeftMargin = 3;
            this._value.ParentColumn = this.treeColumn2;
            // 
            // timer1
            // 
            this.timer1.Interval = 10;
            this.timer1.Tick += new System.EventHandler(this.Timer1Tick);
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(46, 279);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 2;
            this.button1.Text = "button1";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.Button1Click);
            // 
            // MainForm
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
            this.ClientSize = new System.Drawing.Size(418, 442);
            this.Controls.Add(this.button1);
            this.Controls.Add(this._tree);
            this.Name = "MainForm";
            this.Text = "TestApplication";
            this.ResumeLayout(false);

        }
    }
}

[Laurent Nicot]

The third column is a real column or empty space (not a column) ?
You can try to set AutoSpanColumns property (added in rev 94) to automatically adjust columns size

[Andrew Ellis]

The thrid column should just be empty space. I have only added the first 2 columns in the column collection, _treecolumn1 & _treecolumn2. The columns have the heading Name and Value respectively.

Setting the AutospanColumn property does mask the issue. Ideally I would like the area to be blank.