Is there an easy work around for the MultiSelect not working in child grids?  I'm using ver 2010.1.10.504 and if I try to select (Ctrl-Click) a couple child rows under one parent row it works. However if I try to select two child rows under different parent rows, selection of the first row is removed upon clicking the second.  Is creating and using a new checkbox column the only way?   Thanks...

Hello,

I'm working with GridViewDecimalColumn and I would like that digits shown to have differents numbers of decimals according to their row. I've only found a command to impose the fomatString for all the columns. Before the update, it was possible through the command radGridView.rows[i].cell[j].cellElement.formatString, but won't functionnate anymore. I've searched in the documentations and tryed with GetCellElement function and with the cellFormating, but found nothing.

Does someone have an idea ?

Thank you

Georges DE VOS

Hello!
Need your help!

I have following code:
which throws ArgumentOutOfRangeException  when I try to switch in parent grid when some filter is applied to child grid (for example I selected several rows in child grid  based on some condition).
I try to add _pointGridView.EndEdit() before
_pointGridView.DataSource = rows;
but nothing helps.

Stack trace is :
System.ArgumentOutOfRangeException was unhandled by user code
  Message="Index was out of range. Must be non-negative and less than the size of the collection.\r\nParameter name: index"
  Source="mscorlib"
  ParamName="index"
  StackTrace:
       at System.Collections.CollectionBase.System.Collections.IList.get_Item(Int32 index)
       at Telerik.WinControls.RadElementCollection.get_Item(Int32 index)
       at Telerik.WinControls.RadElement.DisposeChildren()
       at Telerik.WinControls.UI.GridTableBodyElement.CleanupRows()
       at Telerik.WinControls.UI.GridTableElement.Update_Reset(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
       at Telerik.WinControls.UI.GridTableElement.UpdateCore(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
       at Telerik.WinControls.UI.GridTableElement.Update(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
       at Telerik.WinControls.UI.GridViewTemplate.UpdateUI(GridUINotifyAction action, GridViewRowInfo[] rowInfos)
       at Telerik.WinControls.UI.GridViewTemplate.Update(GridUINotifyAction action)
       at Telerik.WinControls.Data.DataAccessComponent.InitDataGrid()
       at Telerik.WinControls.Data.DataAccessComponent.Bind(Object dataSource, String dataMember)
       at Telerik.WinControls.Data.DataAccessComponent.set_DataSource(Object value)
       at Telerik.WinControls.UI.RadGridView.set_DataSource(Object value)
       at DataProviderUI.ProivderTask.ProviderTaskControl.gNSSDataProviderBindingSource_CurrentChanged(Object sender, EventArgs e) in D:\SVN\Trunk\Archivarius\src\DataProviderUI\ProivderTask\ProviderTaskControl.cs:line 164
       at System.Windows.Forms.BindingSource.OnCurrentChanged(EventArgs e)
       at System.Windows.Forms.BindingSource.CurrencyManager_CurrentChanged(Object sender, EventArgs e)
       at System.Windows.Forms.CurrencyManager.OnCurrentChanged(EventArgs e)
  InnerException:

Thanks.

I receive the following error when databind RadGridView to a list<T> array.
Version Telerik 2009.3.9.1203

Value of '612' is not valid for 'Value'. 'Value' must be between 'Minimum' and 'Maximum'.
Parameter name: Value

Dev Notes:
-----------------------
I am displaying value from sort by date in decending order, as the data comes in in real time. I add new incoming data to the binding
source.

' Add to binding source the peform functions below.

How do i fix this problem? Is there a fix for this in Telerik 2010 Q1?

 

 

Me.rgvTickets.GridElement.BeginUpdate()

 

m_bsTickets.ResetBindings(

 

False)

 

 

 

Me.rgvTickets.EnableHotTracking = True

 

 

 

Me.rgvTickets.GridElement.EndUpdate(True)

 

at Telerik.WinControls.UI.RadScrollBarElement.set_Value(Int32 value)
   at Telerik.WinControls.UI.GridTableElement.UpdateVScrollBarPosition(GridViewRowInfo rowInfo)
   at Telerik.WinControls.UI.GridTableElement.EnsureRowVisible(GridViewRowInfo rowInfo)
   at Telerik.WinControls.UI.GridViewRowInfo.EnsureVisible()
   at Telerik.WinControls.UI.BaseGridNavigator.SetCurrentRow(Boolean shift, Boolean ctrl)
   at Telerik.WinControls.UI.BaseGridNavigator.SelectRow(GridViewRowInfo row)
   at Telerik.WinControls.UI.GridTableElement.UpdateCurrentPosition()
   at Telerik.WinControls.UI.GridViewInfo.SetCurrentRow(GridViewRowInfo row, Boolean setPosition, Boolean shift, Boolean control, Boolean rightMouseButton)
   at Telerik.WinControls.UI.GridViewTemplate.SetCurrentRow(GridViewRowInfo rowInfo)
   at Telerik.WinControls.Data.DataAccessComponent.InitDataGrid()
   at Telerik.WinControls.Data.DataAccessComponent.currencyManager_ListChanged(Object sender, ListChangedEventArgs e)
   at System.Windows.Forms.CurrencyManager.List_ListChanged(Object sender, ListChangedEventArgs e)
   at System.Windows.Forms.BindingSource.OnListChanged(ListChangedEventArgs e)
   at StrataGem.frmTicketSummary.LoadTicketSummary(ListProcessedFiles list, Boolean isrunningrealtime)
   at StrataGem.frmTicketSummary.tmrMain_Tick(Object sender, EventArgs e)

Hi

i build a user control that include a GridView and more objects.
i need to display the grid to the user without selecting the first row.
in the DataBindingComplete Event i add this line to unselect row :

this.CurrentRow = null;

when the grid show in the first time it's ok, none of the rows selected.
but when i change the DataSource of the grid, the first row selected !

when i use the debuger i saw that after the DataBindingComplete event run the

SelectionChanged event run too.

 

when i use the debugger in the first time that the form show, I saw that DataBindingComplete event run and after that the SelectionChanged run and after that DataBindingComplete event run again.

And because of that the line that I add (this.CurrentRow = null;) run in the end and none of the row selected.

What can I do to unselect row ?

I whant that the code I write will be in the user control and not in the forms code.

I need to have checkboxes in my treeview, but only at the bottom-most level in the tree.  As far as I know, that means I need to enable checkboxes and then suppress them where I don't want them.  I think that the SetPropertyValue command might be of use, but it isn't obvious how the command is used.  I have not been able to find any examples where it is invoked.

Can anyone tell me how to use it, or provide an alternate method to only show checkboxes on one level of the tree?

Hello

First of all: great update, the Gridview in Q2 2010!
Still, what is causing me headache is the new drag and drop capability:

If I use the code snippets from the samples:


the events only get fired when dragging the column (GridCellElement ) as shown in the example
http://www.telerik.com/community/forums/winforms/gridview/drag-amp-drop-functionalities-to-swap-column.aspx

For the data-bound Gridrows the events do not get fired.

Am I doing something wrong? Is there any kind of documentation for the new drag and drop mechanism?

Thanks


Markus

Guys,

I am facing significant performance issues while using the conditional formatting objects like below.
If I do not format my grid it shows up really fast - using the conditional formatting it takes minutes to load.

The data amount I am loading is around 44000 records (7.500 in the Master, the rest in the childgrid).

Is there something I can do to optimize the performance? At the moment it is nearly unusable.

Here is the code I am referring to:

Ok I have a GridView on my form. The GridView datasource is a DataTable. 
the datatable columns types are:    bool (checkbox), text, text, text.
I set all the grid columns to read only except for the first one, to allow the user to check/uncheck to box. 

I also have a timer that ticks every 7 seconds and refreshes the datatable. 
Everything works fine to this point. 

Within the tick event i save the selected row, and then select it again after the data refresh, so the highlighted row doesn't pop back up to the top. 

private void tTickets_Tick(object sender, EventArgs e)

{

   int selectedrow = gridview.CurrentCell.RowIndex;

   GetData();

   gridview.CurrentRow = gvMassTickets.Rows[selectedrow];

}

 
The problem is, when it does this, column[0] (the check box column) becomes readonly. 
if i comment out the "gridview.CurrentRow = gvMassTickets.Rows[selectedrow];"
it works just fine. 

Hello,

I use the RadCalendar with the Office2010 style. When I activate the row header the calendar week is shown. But when I start my application only the first numer is visible. The width of the row header is to small. So, how can I change the width of the row header.

Best regards

Martin