In Development
Last Updated: 29 Feb 2024 15:55 by ADMIN
Created by: Bert
Comments: 1
Category: PageView
Type: Bug Report
1

A possible workaround here is to make the panel parent of the buttons visible.

RadPageViewStripElement element = this.radPageView1.ViewElement as RadPageViewStripElement;
element.ItemContainer.ButtonsPanel.DrawFill = true;
element.ItemContainer.ButtonsPanel.NumberOfColors = 1;

In Development
Last Updated: 28 Feb 2024 15:57 by ADMIN
Scheduled for 2024 Q2
When I work with RadGridView component, the "RadGridView Property Builder" closes unexpectedly. It happens when I make the following steps:

1. RadGridView properties AutoSizeRow set to true.

2. Column Group properties ShowHeader set to false. 
In Development
Last Updated: 27 Feb 2024 11:11 by ADMIN
Scheduled for 2024 Q2
When using the picturebox on a monitor that is not on 100% scaling, the zooming and panning does not work correctly. 
In Development
Last Updated: 26 Feb 2024 14:20 by ADMIN
Scheduled for 2024 Q2
Created by: Tinus
Comments: 1
Category: UI for WinForms
Type: Bug Report
0
You cannot use the component in .NET project, yet it is available in .NET Framework.
In Development
Last Updated: 22 Feb 2024 15:23 by ADMIN
Scheduled for 2024 Q2
This event works for FilterViewTextCategoryElement, but not for FilterViewBooleanCategoryElement.
Private Sub Filter_CategoryCreating(sender As Object, e As FilterViewCategoryCreatingEventArgs)
   AddHandler DirectCast(e.Category, FilterViewBooleanCategoryElement).ItemCreated, AddressOf BoolCategoryItemCreated
Thanks
In Development
Last Updated: 22 Feb 2024 09:53 by ADMIN
Scheduled for 2024 Q2

RadVirtualGrid is created to support a million records or more. Still it contains some "heavy" operations like CopySelection/CutSelection/Paste which can take a long time.

I would like to intercept these methods so I can show a "Please wait"-window during the operation. Furthermore I have the need to set a flag to true when such a operation is executing. 

In Development
Last Updated: 22 Feb 2024 09:15 by ADMIN
Scheduled for 2024 Q2

Repro-steps:

  1. Create a RadTreeView
  2. Set the TreeViewElement.ExpandTimerInterval to forever (so never auto expand by the timer).
  3. Enable drag/drop.
  4. Create an event handler for RadTreeView.DragEnding and make it cancel the drop operation.
  5. Fill the tree with random nodes and childnodes
  6. Drag and drop a node to collapsed node with children.

Observed behavior:

  1. The node is not dropped but the target node is expanded..

Expected behavior:

  1. The node is not dropped but the target node is NOT expanded, since the operation is cancelled.

 

In Development
Last Updated: 19 Feb 2024 15:21 by ADMIN
Scheduled for 2024 Q2
In Development
Last Updated: 16 Feb 2024 11:58 by ADMIN
Scheduled for 2024 Q2

In this particular case, we have custom RadButtonElements placed in the title bar of the form. We have subscribed to the click event on each button. In the click event handlers, we are showing file dialogs. When clicking one time to show a dialog and the mouse leaves the title bar bounds, this triggers the click event twice, thus opening another dialog.

As a workaround, we could use the MouseDown event instead or raise a flag in the click event handler.

In Development
Last Updated: 16 Feb 2024 11:29 by ADMIN
Scheduled for 2024 Q2
I am using the Winforms 4.8 Nuget package. And just recently now when I make any edits to the form with a RadRibbonBar in the designer, the declare for that object in the designer.cs code changes from RadRibbonBar to DropDownPopupForm.
In Development
Last Updated: 12 Feb 2024 16:06 by ADMIN
Scheduled for 2024 Q2
The windows 11compact theme does not show up in my Toolbox.
In Development
Last Updated: 12 Feb 2024 14:22 by ADMIN
Scheduled for 2024 Q2

Setting the DataSource in the SelectedIndexChanged event will trigger the event again. Thus leading to StackOverflowException. 

A possible workaround will be to unsubscribe from the event when changing the DataSource property or raise a flag which can be checked in the event handler.

In Development
Last Updated: 09 Feb 2024 15:10 by ADMIN
Scheduled for 2024 Q2
Hi support,

while using the RadDateTimePicker control with FreeFormDateTime mask provider we encountered an unexpected behaviour.

While typing within the TextBox, we pressed CTRL+X to cut the inserted text to the clipboard. By doing so, a System.NullReferenceException was thrown.
In Development
Last Updated: 07 Jul 2023 12:01 by ADMIN
Applications hangs when using custom format containing one part ("ddd" or "dddd"). 
In Development
Last Updated: 16 Nov 2022 05:47 by ADMIN
When you inspect a RadGridView Cell with the inspect.exe tool you will see that the Value property is empty.
In Development
Last Updated: 03 Aug 2022 09:10 by ADMIN

Repro-steps:

  1. Create a RadGridView
  2. MultiSelect = true
  3. SelectionMode = CellSelect
  4. Fill it with lots of cells (in my case: 7 columns, 8544 rows)
  5. Press CTRL-A
  6. Press Delete

Expected behavior:

  • All rows are gone

Observed behavior:

  • 50/50 change that some rows remain.

I traced the problem back to the method GridViewSleectedCellsCollection.IsSelected / GetHashCodeString.

internal bool IsSelected(GridViewRowInfo row, GridViewColumn column) => row != null && column is GridViewDataColumn && this.hashtable.Contains((object) this.GetHashCodeString(row, column));

When a cell is selected with GridViewCellInfo.IsSelected = true, it checks if it has already been selected. It does so by calling GridViewSleectedCellsCollection.IsSelected. which checks if a HasCodeString is already in a hashtable. But, when another selected cell has the same HasCodeString, the result is (incorrectly) true, which will result in not added it to the collection of selected cells. 

I guess that is can be easily fixed by changing:

 private string GetHashCodeString(GridViewRowInfo row, GridViewColumn column)
    {
      int hashCode = row.GetHashCode();
      string str1 = hashCode.ToString();
      hashCode = column.GetHashCode();
      string str2 = hashCode.ToString();
      return str1 + str2;
    }

to:

 private string GetHashCodeString(GridViewRowInfo row, GridViewColumn column)
    {
      int hashCode = row.GetHashCode();
      string str1 = hashCode.ToString();
      hashCode = column.GetHashCode();
      string str2 = hashCode.ToString();
      return str1 + "_" + str2;
    }

Since hashcodes 1 + 23 will result in the same string as hashcodes 12 + 3.

Making this change will reduce the problem significantly, but not entirely since hashCodes will never be unique.

In Development
Last Updated: 12 Jan 2022 08:59 by ADMIN

Steps to reproduce:

1. Bind the grid to BindingList

2. Call BestFitColumns method in form's constructor

3. Use Fluent/Crystal theme

4. Rebind the grid by setting DataSource=null

5. Exception is thrown

Stack trace:

en Telerik.WinControls.UI.BestFitHelper.SetColumnWidth(GridViewColumn column, Single desiredWidth)
   en Telerik.WinControls.UI.BestFitHelper.BestFitColumnCore(GridViewColumn column, BestFitColumnMode mode)
   en Telerik.WinControls.UI.BestFitHelper.ProcessRequests()
   en Telerik.WinControls.UI.GridTableElement.UpdateAll()
   en Telerik.WinControls.UI.GridTableElement.UpdateViewCore(Object sender, DataViewChangedEventArgs args)
   en Telerik.WinControls.UI.GridTableElement.UpdateView(Object sender, DataViewChangedEventArgs args)
   en Telerik.WinControls.UI.GridTableElement.ProcessTemplateEvent(GridViewEvent eventData)
   en Telerik.WinControls.UI.GridTableElement.Telerik.WinControls.UI.IGridViewEventListener.ProcessEvent(GridViewEvent eventData)
   en Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessCollection(GridViewEvent gridEvent, PriorityWeakReferenceList list, GridEventProcessMode processMode)
   en Telerik.WinControls.UI.GridViewEventProcessEntity.ProcessEvent(GridViewEvent gridEvent)
   en Telerik.WinControls.UI.GridViewSynchronizationService.NotifyListeners(GridViewEvent gridEvent)
   en Telerik.WinControls.UI.GridViewSynchronizationService.FlushEvents()
   en Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewEvent gridEvent)
   en Telerik.WinControls.UI.GridViewSynchronizationService.DispatchEvent(GridViewTemplate template, GridViewEvent eventData, Boolean postUI)
   en Telerik.WinControls.UI.GridViewTemplate.DispatchEvent(GridViewEvent gridEvent, Boolean postUI)
   en Telerik.WinControls.UI.GridViewTemplate.DispatchDataViewChangedEvent(Object sender, DataViewChangedEventArgs args)
   en Telerik.WinControls.UI.GridViewTemplate.OnViewChanged(Object sender, DataViewChangedEventArgs e)
   en Telerik.WinControls.UI.MasterGridViewTemplate.OnViewChanged(Object sender, DataViewChangedEventArgs e)
   en Telerik.WinControls.UI.GridViewTemplate.CollectionView_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   en Telerik.WinControls.Data.RadCollectionView`1.OnCollectionChanged(NotifyCollectionChangedEventArgs args)
   en Telerik.WinControls.Data.RadDataView`1.RebuildData(Boolean notify)
   en Telerik.WinControls.Data.RadDataView`1.RefreshOverride()
   en Telerik.WinControls.Data.RadDataView`1.ProcessCollectionChanged(NotifyCollectionChangedEventArgs args)
   en Telerik.WinControls.Data.RadCollectionView`1.source_CollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
   en Telerik.WinControls.Data.NotifyCollectionChangedEventHandler.Invoke(Object sender, NotifyCollectionChangedEventArgs e)
   en Telerik.WinControls.Data.RadListSource`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   en Telerik.WinControls.Data.RadListSource`1.EndUpdate(Boolean notifyUpdates)
   en Telerik.WinControls.Data.RadListSource`1.Initialize()
   en Telerik.WinControls.Data.RadListSource`1.Bind(Object dataSource, String dataMember)
   en Telerik.WinControls.Data.RadListSource`1.set_DataSource(Object value)
   en Telerik.WinControls.UI.GridViewTemplate.set_DataSource(Object value)
   en Telerik.WinControls.UI.RadGridView.set_DataSource(Object value)

In Development
Last Updated: 19 Jun 2017 12:54 by ADMIN
To reproduce: please refer to the attached sample project and gif file.

Workaround: use the CellFormatting event and apply the light orange BackColor for the selected cells belonging to the current pinned column:

private void radGridView1_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
{
    if (e.Row.IsSelected && e.Column.IsCurrent)
    {
        e.CellElement.BackColor = Color.FromArgb(255, 231, 174);
    }
    else
    { 
        e.CellElement.ResetValue(LightVisualElement.BackColorProperty, ValueResetFlags.Local);
    }
}
In Development
Last Updated: 07 Apr 2015 16:46 by ADMIN
To reproduce:
- Add RadDropDownButton to a blank form.
- Set its anchor property to top, right and its AutoSize property to true.
- At runtime set the button text to a long string, you will notice that the button is resized to the right when it should be resized to the left.

To workaround this you can subscribe to the SizeChanged event of the button change its location depending on the new size:
Size prevSize;

public Form1()
{
    InitializeComponent();
    radDropDownButton1.AutoSize = true;

    this.Shown += Form1_Shown;
}

void Form1_Shown(object sender, EventArgs e)
{
    prevSize = radDropDownButton1.Size;

    radDropDownButton1.SizeChanged += radDropDownButton1_SizeChanged;
}

void radDropDownButton1_SizeChanged(object sender, EventArgs e)
{
    RadDropDownButton button = sender as RadDropDownButton;
    button.Location = new Point(button.Location.X - (radDropDownButton1.Size.Width - prevSize.Width), button.Location.Y);
    prevSize = button.Size;
    
}

private void radButton2_Click(object sender, EventArgs e)
{
    radDropDownButton1.Text = "Very long button text set";
}