Error while clicking the GroupElement in RadPanelbar

[Dhirendra]

Hi,

I am adding the RadPanelbarGroupElement in RadPanelbar control on Runtime and adding the populated Treeview control in each group.  The RadPanelbar is in OutlookNav style and for each group, EnableHostControlMode is true.

Everything works fine but if I click any of the Groups 4 times, the whole application hangs.

Please suggest. See the code below:

 

private void PreapreNavigationControl(Feature feature)
        {
          
            if (feature.Groups.Count > 0)
            {
                foreach (Group group in feature.Groups)
                {
                    //Adding the treeview
                    RadTreeView treeView = new RadTreeView();

                    RadPanelBarGroupElement groupElement = new RadPanelBarGroupElement();
                    radPanelBarNavigation.Items.AddRange(new Telerik.WinControls.RadItem[] {groupElement});
                  
                    ConfigureGroupElement(groupElement, group.Name, out treeView);

                    //Adding the Root Node
                    RadTreeNode rootNode = createAndRegisterTreeNode(group.Name, string.Empty);
                    treeView.Nodes.Add(rootNode);

                    foreach (Task task in group.Tasks)
                    {
                        RadTreeNode taskNode = createAndRegisterTreeNode(task.Name, task.NavigationCommandName);
                        rootNode.Nodes.Add(taskNode);
                    }

                }
            }
        }

private RadPanelBarGroupElement ConfigureGroupElement(RadPanelBarGroupElement groupElement, string groupElementName, out RadTreeView treeView)
{
            //RadPanelBarGroupElement groupElement = new RadPanelBarGroupElement();
            treeView = new RadTreeView();

            //Designer Code

            groupElement.ContentPanel.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(treeView)).BeginInit();

            groupElement.Caption = groupElementName;

            // groupElement.ContentPanel
            groupElement.ContentPanel.BackColor = System.Drawing.SystemColors.ControlLightLight;
            groupElement.ContentPanel.CausesValidation = true;
            groupElement.ContentPanel.Controls.Add(treeView);
            groupElement.EnableHostControlMode = true;
            groupElement.Text = groupElementName;
           
            // treeView

            treeView.BackColor = System.Drawing.Color.Transparent;
            treeView.Dock = System.Windows.Forms.DockStyle.Fill;
            treeView.Font = new System.Drawing.Font("Tahoma", 8.6F);
            treeView.Location = new System.Drawing.Point(0, 0);
            treeView.ShowItemToolTips = true;
            treeView.ShowLines = true;
            treeView.ShowRootLines = true;
            treeView.ThemeClassName = "Telerik.WinControls.UI.RadTreeView";
            treeView.Size = new System.Drawing.Size(277, 416);

            groupElement.ContentPanel.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(treeView)).EndInit();

            return groupElement;
        }

[Dhirendra]

My Company is waiting on this decision as this is a kind of POC (Proof of Concept) what i m tryin to perform. If this works, we will go ahead in purchasing the stuff from telerik.

Please respond.

[Boyko Markov]

Hello Dhirendra,

Thank you for contacting us. I didn't manage to reproduce this behavior. Here I send you the test application which I have prepared. I hope this will help you, otherwise please send me a sample project which demonstrates the hang up behavior. The application I have prepared you is attached and is prepared using  RadControls for Winforms Q1 SP1 version. Please contact me again if you have more questions

Best wishes,
Boyko Markov
the Telerik team

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[Dhirendra]

Hello Markov,

Thanks for prompt reply. I have tried the solution sent by you, it works fine. Even i put my code into a sample application and that too works nicely without any errors.

But this code I am using in SCSF (CAB application) and creating the Radpanelbar inside a View.  There it still hangs.
Anyways when I changed the Radpanelbar style to "ListBar" , it is working without any issue inside CAB too.

Could you look into the matter and try to create the things in a View of CAB applications rather than Windows application ?

[Jordan]

Hello Dhirendra,

I am writing to let you know that we are testing the code that Boyko sent you with TCEK.
I will follow up as soon as we finish testing.

Greetings,
Jordan
the Telerik team

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[Jordan]

Hello Dhirendra,

This issue is getting even more interesting. I tested the code with the TCEK Finance Application example but still to no avail. Here is how I changed the Finance Application example to test the code:

In the StockPortfolioView.cs file in the constructor I set the GroupStyle to OutlookNavPane. Then I commented the code in the AddStockItem method:

public void AddStockItem(StockItem item, string groupName)
        {
            //StockItemElement stockElement = new StockItemElement();
            //stockElement.StockItem = item;
            //stockElement.Size = new Size(200, 40);

            //RadPanelBarGroupElement group = this.radPanelBar.Items[groupName] as RadPanelBarGroupElement;
            //group.Items.Add(stockElement);
            //stockElement.SetValue(StockItemElement.PositiveChangeProperty, item.Change > 0);
        }

and finally I used your code in the AddValuationGroup method:

public void AddValuationGroup(string caption, string name)
        {
            //RadPanelBarGroupElement newGroup = new RadPanelBarGroupElement();
            //newGroup.EnableHostControlMode = true;
            //newGroup.Caption = caption;
            //newGroup.Name = name;
            //newGroup.Expanded = true;

            //this.radPanelBar.Items.Add(newGroup);

            RadTreeView treeView = new RadTreeView();

            RadPanelBarGroupElement groupElement = new RadPanelBarGroupElement();
            this.radPanelBar.Items.AddRange(new Telerik.WinControls.RadItem[] { groupElement });

            ConfigureGroupElement(groupElement, caption, out treeView);

            //Adding the Root Node
            RadTreeNode rootNode = new RadTreeNode("RootNode");
            treeView.Nodes.Add(rootNode);

            for (int j = 0; j < 15; j++)
            {
                RadTreeNode taskNode = new RadTreeNode("Task" + j);
                rootNode.Nodes.Add(taskNode);
            }

            treeView.ExpandAll();
        }
private RadPanelBarGroupElement ConfigureGroupElement(RadPanelBarGroupElement groupElement, string groupElementName, out RadTreeView treeView)
        {
            //RadPanelBarGroupElement groupElement = new RadPanelBarGroupElement();
            treeView = new RadTreeView();

            //Designer Code

            groupElement.ContentPanel.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(treeView)).BeginInit();

            groupElement.Caption = groupElementName;

            // groupElement.ContentPanel
            groupElement.ContentPanel.BackColor = System.Drawing.SystemColors.ControlLightLight;
            groupElement.ContentPanel.CausesValidation = true;
            groupElement.ContentPanel.Controls.Add(treeView);
            groupElement.EnableHostControlMode = true;
            groupElement.Text = groupElementName;

            // treeView

            treeView.BackColor = System.Drawing.Color.Transparent;
            treeView.Dock = System.Windows.Forms.DockStyle.Fill;
            treeView.Font = new System.Drawing.Font("Tahoma", 8.6F);
            treeView.Location = new System.Drawing.Point(0, 0);
            treeView.ShowItemToolTips = true;
            treeView.ShowLines = true;
            treeView.ShowRootLines = true;
            treeView.ThemeClassName = "Telerik.WinControls.UI.RadTreeView";
            treeView.Size = new System.Drawing.Size(277, 416);

            groupElement.ContentPanel.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(treeView)).EndInit();

            return groupElement;
        }

May be we are missing something. Are you sure that you sent us all the relevant code. It will be best if you can try to reproduce the issue using the Finance Application example from the latest TCEK, so that we are working with the same code base.

Sincerely yours,
Jordan
the Telerik team

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