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Child and parents

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Svein Thomas
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Svein Thomas asked on 28 Apr 2011, 02:35 PM
Hi,

Just downloaded the new 2011, Q1 components to see if the new treeview could do the magic i want it to do, but it seems like it couldn't OR?

here is my code.. could someone guide me in the correct direction. 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
namespace RadControlsWinFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            setup();
        }
        public void setup()
        {
            KOMP_G komp_g1 = new KOMP_G() { KOMP_G_ID = 1, NAVN = "Komp1", KOMP_UG = new List<KOMP_UG>() };
            KOMP_G komp_g2 = new KOMP_G() { KOMP_G_ID = 2, NAVN = "Komp2", KOMP_UG = new List<KOMP_UG>() };
 
            KOMP_UG komp_ug1 = new KOMP_UG() { KOMP_UG_ID = 1, NAVN = "Komp_g1 -> komp_ug1", KOMPs = new List<KOMP>() };
            KOMP_UG komp_ug2 = new KOMP_UG() { KOMP_UG_ID = 2, NAVN = "Komp_g1 -> komp_ug2", KOMPs = new List<KOMP>() };
            KOMP_UG komp_ug3 = new KOMP_UG() { KOMP_UG_ID = 3, NAVN = "Komp_g1 -> komp_ug3", KOMPs = new List<KOMP>() };
            KOMP_UG komp_ug4 = new KOMP_UG() { KOMP_UG_ID = 4, NAVN = "Komp_g1 -> komp_ug4", KOMPs = new List<KOMP>() };
 
            KOMP komp1 = new KOMP() { KOMP_ID = 1, NAVN = "A" };
            KOMP komp2 = new KOMP() { KOMP_ID = 2, NAVN = "B" };
            KOMP komp3 = new KOMP() { KOMP_ID = 3, NAVN = "C" };
            KOMP komp4 = new KOMP() { KOMP_ID = 4, NAVN = "D" };
            KOMP komp5 = new KOMP() { KOMP_ID = 5, NAVN = "E" };
            KOMP komp6 = new KOMP() { KOMP_ID = 6, NAVN = "F" };
 
            komp_ug1.KOMPs.Add(komp1);
            komp_ug1.KOMPs.Add(komp2);
            komp_ug2.KOMPs.Add(komp3);
            komp_ug3.KOMPs.Add(komp4);
            komp_ug4.KOMPs.Add(komp5);
            komp_ug4.KOMPs.Add(komp6);
 
            komp_g1.KOMP_UG.Add(komp_ug1);
            komp_g1.KOMP_UG.Add(komp_ug2);
            komp_g2.KOMP_UG.Add(komp_ug3);
            komp_g2.KOMP_UG.Add(komp_ug4);
 
 
 
            List<IKomp> komps = new List<IKomp>();
            komps.Add(komp_g1);
            komps.Add(komp_g2);
 
 
            //SETUP TreeView
            radTreeView1.DataSource = komps;
            radTreeView1.DisplayMember = "Description";
            radTreeView1.ValueMember = "Value";
            radTreeView1.ParentMember = "Parent";
            radTreeView1.ChildMember = "Children";
        }
 
    }
 
 
    public interface IKomp
    {
        string Value { get; }
        string Description { get; }
        IKomp Parent { get; }
        IEnumerable<IKomp> Children { get; }
    }
 
    public  class KOMP : IKomp
    {
 
        public int KOMP_ID;
        public string NAVN;
        public KOMP_UG KOMP_UG;
 
        #region IKomp Members
 
        public string Value
        {
            get { return this.KOMP_ID.ToString(); }
        }
 
        public string Description
        {
            get { return this.NAVN; }
        }
        public IKomp Parent
        {
            get { return this.KOMP_UG; }
        }
        public IEnumerable<IKomp> Children
        {
            get { return null; }
        }
 
        #endregion
    }
 
    public  class KOMP_G : IKomp
    {
        public int KOMP_G_ID;
        public string NAVN;
        public List<KOMP_UG> KOMP_UG;
        #region IKomp Members
 
        public string Value
        {
            get { return this.KOMP_G_ID.ToString(); }
        }
 
        public string Description
        {
            get { return this.NAVN; }
        }
        public IKomp Parent
        {
            get { return null; }
        }
        public IEnumerable<IKomp> Children
        {
            get { return this.KOMP_UG.Cast<IKomp>(); }
        }
 
        #endregion
 
 
    }
     
    public class KOMP_UG : IKomp
    {
 
        public int KOMP_UG_ID;
        public string NAVN;
        public KOMP_G KOMP_G;
        public List<KOMP> KOMPs;
 
        #region IKomp Members
 
        public string Value
        {
            get { return this.KOMP_UG_ID.ToString(); }
        }
 
        public string Description
        {
            get { return this.NAVN; }
        }
        public IKomp Parent
        {
            get { return this.KOMP_G; }
        }
        public IEnumerable<IKomp> Children
        {
            get { return this.KOMPs.Cast<IKomp>(); }
        }
 
        #endregion
 
    }
}

3 Answers, 1 is accepted

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Emanuel Varga
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answered on 29 Apr 2011, 04:47 PM
Hello Svein,

Just change the binding code a little, from this:
//SETUP TreeView
radTreeView1.DataSource = komps;
radTreeView1.DisplayMember = "Description";
radTreeView1.ValueMember = "Value";
radTreeView1.ParentMember = "Parent";
radTreeView1.ChildMember = "Children";
to this:
//SETUP TreeView
radTreeView1.DataSource = komps;
radTreeView1.ChildMember = @"KOMP_G\Children\Children";
radTreeView1.DisplayMember = @"Description\Description\Description";

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga

Telerik WinForms MVP
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Svein Thomas
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answered on 02 May 2011, 11:42 AM
One detail that does not seem to work with this is setup is AutoCheckChildNodes and TriStateMode.
How can i make this work?

/ST
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Accepted
Emanuel Varga
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answered on 02 May 2011, 09:09 PM
Hello again Svein,

Nice catch on this one, this only happens when you set TriStateMode = true  && CheckBoxes = true.

Please use the following as a workaround, enable TriStateMode & disable CheckBoxes and use the following:
    radTreeView1.AutoCheckChildNodes = true;
    radTreeView1.TriStateMode = true;
    radTreeView1.CheckBoxes = false;
    ShowCheckBoxes(radTreeView1.Nodes);
 
private void ShowCheckBoxes(RadTreeNodeCollection nodes)
{
    foreach (var node in nodes)
    {
        node.CheckType = Telerik.WinControls.UI.CheckType.CheckBox;
        ShowCheckBoxes(node.Nodes);
    }
}

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga

Telerik WinForms MVP
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Svein Thomas
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Emanuel Varga
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Svein Thomas
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