Hi

 

Users of my app some time ago reported issue with memory leak, so I started investigation and it looks that there is problem with RadGridView.

 

 

This is my sample code:

 

 

 

public partial class Form1 : Form

{

    BindingList<Package> _packages = new BindingList<Package>();

    BindingList<PackageItem> _items = new BindingList<PackageItem>();

    public Form1()

    {

        InitializeComponent();

        radGridView1.DataSource = _packages;

        radGridView1.ReadOnly = true;       
     

        GridViewTemplate viewItemsTemplate = new GridViewTemplate();

        viewItemsTemplate.DataSource = _items;

        this.radGridView1.MasterTemplate.Templates.Add(viewItemsTemplate);
 

        GridViewRelation relation = new GridViewRelation(radGridView1.MasterTemplate);

        relation.RelationName = "myRelation";

        relation.ChildTemplate = viewItemsTemplate;



        relation.ParentColumnNames.Add("Id");

        relation.ChildColumnNames.Add("PackageId");



        this.radGridView1.Relations.Add(relation);

        _packages.Add(new Package() { Id = "1", Name = "Package1" });

        _items.Add(new PackageItem() { Id = "1", PackageId = "1", Name = "Item1 in package1" });

        _items.Add(new PackageItem() { Id = "2", PackageId = "1", Name = "Item2 in package1" });

        _packages.Add(new Package() { Id = "2", Name = "Package2" });

        _items.Add(new PackageItem() { Id = "3", PackageId = "2", Name = "Item1 in package2" });

        _items.Add(new PackageItem() { Id = "4", PackageId = "2", Name = "Item2 in package2" });

        radGridView1.BestFitColumns();

    }

    private void btnDelete_Click(object sender, EventArgs e)

    {

        radGridView1.BeginUpdate();

        PackageItem pi = _items[0];

        _items.Remove(pi);

        radGridView1.EndUpdate();

    }

}

 

 

 

 

 

 

 

When I delete row I call BeingUpdate() and EndUpdate(), this is needed – without these calls row is not deleted and after click on row exception is thrown.

 

The problem for sure is missing unhooking event RadGridView.ThemeNameChanged (I do not know if there are other missing unhooks).

 

 

 

TO SEE this problem before deleting row YOU HAVE TO expand child rows!

 

 

I used profiler and I have seen that there are types that hook this event and do not unhook after disposing! These types are: GridDetailViewCellElement, GridDetailViewRowElement, GridTableElement. You can check details in screen shots.

How can I solve this problem? This is really urgent issue for me – I have a lot of updates in my grid and after couple hours there is always out of memory exception caused by my app.

Regards

 

 

We use the Desktop Alerts quite extensive now, but something annoys me:
When RadDesktopAlerts became visible while i am editing in a RadTextBox it seems to steal the focus. I can still type letters but delete and return keys are disabled. When the RadDesktopAlert disappears (we use the autoclose property) the keyboard works again and i can continue with the TextBox. Is there something you can do to fix this in the next version? Or is there already a setting to keep the Alert in the background?

You can see the problem in your samples: Desktop Alert->Settings
Preview the Alert and edit in the "Delay" text box. You can add numbers but delete and return keys are redirected to the desktop alerts.

Best regards

Bernd

Hello,
I'm working with a GridView in bound mode. It's bounded with a List which receives new rows during execution time. At a certain point, a new row is added, this row turns to be the selected one and the gridview scrolls. That's my problem: I want it to maintain the line (chosen previously by the user) as the one selected. But, this is not the beahaviour I'm getting, because every row which is added or updated becomes the one selected.
How can I make the selected row stay the same while adding this new rows to the bounded list?

Thanks,
Alexandre

Hi - I am sure I am not doing this right but not sure how it is done

I have an mdi parent with a rad ribbon bar on it. When I click a button on the ribbon bar it loads an child form. In the child form I have a rad treeview. But when the form loads the nodes do not show up. I can see the treeview, but the nodes do not populate

 Public Sub New()

        ' This call is required by the designer.
        InitializeComponent()
        AddNodes()

        ' Add any initialization after the InitializeComponent() call.

    End Sub

    Private Sub AddNodes()
        Me.MdiParent = Form1
        Me.RadTreeView1.Parent = Form1
        Dim Node1 As New RadTreeNode("Node1")
        Node1.Tag = 1234
        Node1.BackColor = Color.Blue
        Dim Node2 As New RadTreeNode("Node2")
        Dim Node3 As New RadTreeNode("Node3")
        Dim Node4 As New RadTreeNode("Node4")
        RadTreeView1.Nodes.Add(Node1)
        RadTreeView1.Nodes.Add(Node2)
        Node1.Nodes.Add(Node3)
        Node2.Nodes.Add(Node4)
    End Sub

Hi,

I am not able to set the start date of the Timeline View to the Current Date. It always defaults to 31 Dec 2010.
The Range is applied correctly. i.e. 1 Year on either side of today.

I did refer to the documentation at - http://www.telerik.com/help/winforms/scheduler-views-timeline-view.html

and have the following in my code:

this.rScheduler.GetTimelineView().StartDate = DateTime.Today;
this.rScheduler.GetTimelineView().RangeStartDate = DateTime.Today.AddYears(-1);
this.rScheduler.GetTimelineView().RangeEndDate = DateTime.Today.AddYears(1);

If I change the first statement to: this.rScheduler.GetTimelineView().StartDate = new DateTime(2010, 11, 20);
this sets the default date on the Timeline View to this date correctly when the TimelineView is shown.
Any date after 31st Dec 2010 sets the Time Line View Start date to 31st Dec 2010.

Thanks,
Lester

 

I have a dock control with 6 minimized toolbar windows and all works as expected accept when a tabbed document it loaded into the MDI area and one of the toolbar windows is opened and a control within that toolbar window is clicked the following exception is thrown:

System.NullReferenceException was unhandled
  Message=Object reference not set to an instance of an object.
  Source=Telerik.WinControls.RadDock
  StackTrace:
       at Telerik.WinControls.UI.Docking.DocumentManager.get_ActiveDocument()
       at Telerik.WinControls.UI.Docking.DocumentManager.InsertDocument(Int32 index, DockWindow document)
       at Telerik.WinControls.UI.Docking.DocumentManager.EnsureActiveDocument()
       at Telerik.WinControls.UI.Docking.DocumentManager.get_ActiveDocument()
       at Telerik.WinControls.UI.Docking.DocumentManager.OnActiveWindowChanged(DockWindow currActive)
       at Telerik.WinControls.UI.Docking.RadDock.OnActiveWindowChanged(DockWindowEventArgs e)
       at Telerik.WinControls.UI.Docking.RadDock.UpdateActiveWindow(DockWindow window, Boolean forceNotify)
       at Telerik.WinControls.UI.Docking.RadDock.ActivateWindow(DockWindow window, Boolean forceNotify)
       at Telerik.WinControls.UI.Docking.RadDock.set_ActiveWindow(DockWindow value)
       at Telerik.WinControls.UI.Docking.DockWindow.OnEnter(EventArgs e)
       at System.Windows.Forms.Control.NotifyEnter()
       at System.Windows.Forms.ContainerControl.UpdateFocusedControl()
       at System.Windows.Forms.ContainerControl.AssignActiveControlInternal(Control value)
       at System.Windows.Forms.ContainerControl.ActivateControlInternal(Control control, Boolean originator)
       at System.Windows.Forms.ContainerControl.ActivateControlInternal(Control control, Boolean originator)
       at System.Windows.Forms.ContainerControl.ActivateControlInternal(Control control)
       at System.Windows.Forms.Control.WmSetFocus(Message& m)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
       at Telerik.WinControls.RadControl.WndProc(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       at System.Windows.Forms.UnsafeNativeMethods.SetFocus(HandleRef hWnd)
       at System.Windows.Forms.Control.FocusInternal()
       at System.Windows.Forms.Control.Focus()
       at Telerik.WinControls.RadControl.ProcessFocusRequested(RadElement element)
       at Telerik.WinControls.RadControl.WndProc(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       at System.Windows.Forms.Application.Run(ApplicationContext context)
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
       at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
       at PCNManager.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
       at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
       at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args)
       at System.Runtime.Hosting.ManifestRunner.Run(Boolean checkAptModel)
       at System.Runtime.Hosting.ManifestRunner.ExecuteAsAssembly()
       at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
       at System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
       at System.Activator.CreateInstance(ActivationContext activationContext)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException:

Any assistance would be appreciated.

Thanks

Simon

Hi,
I am using Dock in My MDI From .
My problem is I cannot get auto scroll bars when the contents of the docking
panel exceed the boundaries.

Hello,

The TreeNode of TreeView in web version has a "Value" property that can be bound from XML files. Our colleagues cannot find the corresponding one in WinForm TreeView.

Do you suggest any property as a substitute (that can be bound from XML files)?

Thanks a lot.
Ricky.

Hi,

I have a situation where after editing I have to fire an event containing the old and new name of the edited node so other sections of my application can update to match.  What is the best way to accomplish this?

Regards,
Brad

I've been working on building a treeview that's basically the navigation control for the application, and I've run into a bit of a question.

When I'm using the events BeforeSelect & AfterSelect, I'm getting the warning that I'm supposed to be using the 'Selected' event. However, the Selected event doesn't have any information attached to it - it implements the standard (object sender, EventArgs e) format, with no information on which node has been selected.

So, that's one issue - what's the best way to get the information I need now? (Which node has been selected?)

2nd issue is this: If the user is on node A and has done some editing for that node, and wants to move to node B, I want to warn them about moving away before saving.. So, I want to capture the 'trying to move away' event and cancel the move. How do I do this?