?
Solved

IE webcontrols treeview - how to make a node selected thro' code?

Posted on 2004-09-27
5
Medium Priority
?
744 Views
Last Modified: 2008-02-20
Hi Experts,
I'm using IE webcontrols treeview. I need to have a particular node in the tree hierarchy selected..Is that possible? I see a property called "expanded" which shows a specific node expanded but i dont see any property like "selected"..

Could someone pls help?.. Or is there any other treeview better than this?

Thanks in advance..
0
Comment
Question by:yuvarajr
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
5 Comments
 
LVL 9

Expert Comment

by:glsac
ID: 12167479
Some code I did....gets selected from database, then selects it in tree:

      public class MeetingGicsDlg : MeetingDlgBase
      {
            protected Microsoft.Web.UI.WebControls.TreeView GicsTreeView;
            protected System.Web.UI.HtmlControls.HtmlInputHidden gics;
            protected System.Web.UI.WebControls.Button Submit;

            private void Page_Load(object sender, System.EventArgs e)
            {
                  if (!Page.IsPostBack)
                  {
                        this.Initialize();
                        BindGicNodes();
                  }
            }

            /// <summary>
            /// Adds all nodes to a parent node in the Gic tree based on the
            /// index of the node.
            /// </summary>
            protected void BindGicNodes()
            {
                  MeetingGicData dsSectors = GICSystem.GetGicsSectors(this.MeetingID);

                  if (dsSectors.Tables[0].Rows.Count > 0)
                  {
                        for (int i = 0; i < dsSectors.MEETING_GIC.Rows.Count; i++)
                        {
                              TreeNode nodeSector = new TreeNode();
                              nodeSector.ID = dsSectors.MEETING_GIC[i].GIC_ID.ToString();
                              nodeSector.Text = dsSectors.MEETING_GIC[i].GIC_DESCRIPTION;
                              nodeSector.CheckBox = true;
                              nodeSector.Expandable = Microsoft.Web.UI.WebControls.ExpandableValue.Auto;
                              nodeSector.Checked = dsSectors.MEETING_GIC[i].MEETING_ID != 0;
                              GicsTreeView.Nodes.Add(nodeSector);

                              MeetingGicData dsGroups = GICSystem.GetByGicParentID(dsSectors.MEETING_GIC[i].GIC_ID, this.MeetingID);
                              if (dsGroups.Tables[0].Rows.Count > 0)
                              {
                                    for (int j = 0; j < dsGroups.Tables[0].Rows.Count; j++)
                                    {
                                          TreeNode nodeGroup = new TreeNode();
                                          nodeGroup.ID = dsGroups.MEETING_GIC[j].GIC_ID.ToString();
                                          nodeGroup.Text = dsGroups.MEETING_GIC[j].GIC_DESCRIPTION;
                                          nodeGroup.CheckBox = true;
                                          nodeGroup.Checked = dsGroups.MEETING_GIC[j].MEETING_ID != 0;
                                          if(nodeGroup.Checked)
                                          {
                                                nodeSector.Expanded = true;
                                          }
                                          nodeGroup.Expandable = Microsoft.Web.UI.WebControls.ExpandableValue.Auto;
                                          nodeSector.Nodes.Add(nodeGroup);

                                          MeetingGicData dsInd = GICSystem.GetByGicParentID(dsGroups.MEETING_GIC[j].GIC_ID, this.MeetingID);
                                          if (dsInd.Tables[0].Rows.Count > 0)
                                          {
                                                for (int k = 0; k < dsInd.Tables[0].Rows.Count; k++)
                                                {
                                                      TreeNode nodeInd = new TreeNode();
                                                      nodeInd.ID = dsInd.MEETING_GIC[k].GIC_ID.ToString();
                                                      nodeInd.Text = dsInd.MEETING_GIC[k].GIC_DESCRIPTION;
                                                      nodeInd.CheckBox = true;
                                                      nodeInd.Checked = dsInd.MEETING_GIC[k].MEETING_ID != 0;
                                                      if(nodeInd.Checked)
                                                      {
                                                            nodeGroup.Expanded = true;
                                                            nodeSector.Expanded = true;
                                                      }

                                                      nodeInd.Expandable = Microsoft.Web.UI.WebControls.ExpandableValue.Auto;
                                                      nodeGroup.Nodes.Add(nodeInd);

                                                      MeetingGicData dsSubInd = GICSystem.GetByGicParentID(dsInd.MEETING_GIC[k].GIC_ID, this.MeetingID);
                                                      if (dsSubInd.Tables[0].Rows.Count > 0)
                                                      {
                                                            for (int l = 0; l < dsSubInd.Tables[0].Rows.Count; l++)
                                                            {
                                                                  TreeNode nodeSubInd = new TreeNode();
                                                                  nodeSubInd.ID = dsSubInd.MEETING_GIC[l].GIC_ID.ToString();
                                                                  nodeSubInd.Text = dsSubInd.MEETING_GIC[l].GIC_DESCRIPTION;
                                                                  nodeSubInd.CheckBox = true;
                                                                  nodeSubInd.Checked = dsSubInd.MEETING_GIC[l].MEETING_ID != 0;
                                                                  if(nodeSubInd.Checked)
                                                                  {
                                                                        nodeInd.Expanded = true;
                                                                        nodeGroup.Expanded = true;
                                                                        nodeSector.Expanded = true;
                                                                  }
                                                                  nodeSubInd.Expandable = Microsoft.Web.UI.WebControls.ExpandableValue.Auto;
                                                                  nodeInd.Nodes.Add(nodeSubInd);
                                                            }
                                                      }
                                                }
                                          }
                                    }
                              }
                        }
                  }
            }


            #region Web Form Designer generated code
            override protected void OnInit(EventArgs e)
            {
                  //
                  // CODEGEN: This call is required by the ASP.NET Web Form Designer.
                  //
                  InitializeComponent();
                  base.OnInit(e);
            }
            
            /// <summary>
            /// Required method for Designer support - do not modify
            /// the contents of this method with the code editor.
            /// </summary>
            private void InitializeComponent()
            {    
                  this.Submit.Click += new System.EventHandler(this.Submit_Click);
                  this.Load += new System.EventHandler(this.Page_Load);

            }
            #endregion

            private int AddSelectedGics(TreeNodeCollection nodes)
            {
                  int nChecked = 0;
                  foreach (TreeNode tn in nodes)
                  {
                        int nChildChecked = 0;
                        if (tn.Nodes.Count > 0)
                        {
                              nChildChecked = AddSelectedGics(tn.Nodes);
                        }
                        if(tn.Checked)
                        {
                              if(nChildChecked == 0)
                              {
                                    MeetingSystem.AddMeetingGic(this.MeetingID, Convert.ToInt32(tn.ID));
                              }
                              nChildChecked++;
                              nChecked += nChildChecked;
                        }
                  }

                  return nChecked;
            }

      }
}
0
 
LVL 12

Accepted Solution

by:
monosodiumg earned 800 total points
ID: 12168445
The property is selectedIndex. It takes a string which is the path from root to the node. E.g.
MyTreeView.SelectedNodeIndex = "0.2"
will select the third child (2) of the first child (0) of the root.
0
 
LVL 17

Assisted Solution

by:AerosSaga
AerosSaga earned 200 total points
ID: 12168624
0
 

Author Comment

by:yuvarajr
ID: 12171578
Thanks a lot guys..
0
 
LVL 17

Expert Comment

by:AerosSaga
ID: 12171585
Your very welcome my friend.

Aeros
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Did you know SD-WANs can improve network connectivity? Check out this webinar to learn how an SD-WAN simplified, one-click tool can help you migrate and manage data in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

One of the pain points with developing AJAX, JavaScript, JQuery, and other client-side behaviors is that JavaScript doesn’t allow for cross domain request for pulling content. For example, JavaScript code on www.johnchapman.name could not pull conte…
Problem Hi all,    While many today have fast Internet connection, there are many still who do not, or are connecting through devices with a slower connect, so light web pages and fast load times are still popular.    If your ASP.NET page …
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Monitoring a network: how to monitor network services and why? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the philosophy behind service monitoring and why a handshake validation is critical in network monitoring. Software utilized …

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question