How can i validate Dialog For only show image files on open dialog window.

While Click on GridViewBrowseColumn button only image file extention is visible. 

Hi,

I'm using a RadGridView with ViewDefinitions and I'm getting an error when the Windows have the size of the text at 125%.

The error happen only at this line: Grid.ViewDefinition = MyViewInfo.ViewDefinition

Where my MyViewInfo is a local class:

    Private Class MyViewDefinitionInfo
        Public Columns As List(Of String)
        Public ViewDefinition As IGridViewDefinition
        Public RowHeight As Integer = 30
        Public HeaderHeight As Integer = 30
    End Class

All the Column and Grid format is done inside of a Class, so I pass the Grid and DataTable as parameter

During my tests, I came to conclusion that this error only happens when the Grid is on RadForm, so on a normal Windows Form the error doesn't happen.

Part of the error is bellow, the full details is attached.

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.WinControls.UI.GridTableElement.DpiScaleChanged(SizeF scaleFactor)
   at Telerik.WinControls.RadElement.SetParent(RadElement parent)
   at Telerik.WinControls.RadElement.ChangeCollection(RadElement child, ItemsChangeOperation changeOperation)
   at Telerik.WinControls.RadElementCollection.OnInsertComplete(Int32 index, Object value)

(...)

Full error attached

Hi,

I am using RadRadioButtonColumn as describe in http://www.telerik.com/support/kb/winforms/details/creating-a-radradiobuttoncellelement

but while adding new row in grid ,radio button is not  render and also focus is not comming on that cell/column.

radio button only visible after rowleave event.

Please guide further to resolve this.

Hi,

 I need to change the tooltip TEXT showed in my RadChartView serie but I have no idea of how to do this.

Could anyone help?

Thank you.

I need a way for restart the index of rows of radgridview after ordering them.

In my case i order the rows by a column, but when i go set the currentrow of grid the line that is selected no is the i want. This happens because when the lines are ordered the index of rows no is equal the your posicions.

Can somebody help me please?

I'm using GridView in Telerik 2017.2

CellFormatting event doesn't firing when my GridView is Updating:

myGrid.TableElement.Update(GridUINotifyAction.StateChanged);

when i'm changing my DataSource:

myGrid.DataSource = currentRaces;

but RowFormatting is firing on this events. What can i do? I need to change color of my cells!

Hi,

I have a gridview with a child template (X) and another template (Y) into the child template (X) and have a decimal column in (Y).

I want to SUM the decimal column in (Y) into a cell of parent row in (X).

Thanks,,,

The article here shows how to save state, but it fires them on manual changes, I am trying to detect when this repopulation is going to happen, I have other events unrelated to the UI that are changing the state of the object the treeview is bound to. and would like to be able to detect when that happens. 

http://docs.telerik.com/devtools/winforms/treeview/how-to/keep-radtreeview-states-on-reset

the overarching goal here, is to prevent the tree expanded state from resetting when the tree bound data is updated off the control.