I have implemented custom grouping for a GridView and would like to change the group header background color for some groups based on the grouped rows.

How would I do that?

 -Lou

Hi,

Gridview sort fails when column contains null values or incompatible row values.

See the following errors when sorting using the column header.

Brian

Dear Support,

How can I implement grid with multiple headers or like child header. Any live example or code snipped will be appreciated.

thanks

arvind

Hi everyone,

I used the CellFormatting event to Format all cell's Background and border.

So, when i click on a cell, I don't see the selected row/cell.

Is there any way to set an higher priority to the selected cell/row than the cell formatting ?

Thanks in advance.

Best regards,

Tony

How do you turn off the borders of a table created in a RichTextEditor? In a demo example it shows 3 cells. Can you make the borders invisible?

Hi,

I'm relatively new at programming, so please bare with me.

What I have:

On load fetching image files from folder and creating tiles with those images.

Also, I have an event handler when a file added to folder, to add a new tile.

On load everything works fine and tiles are added. On event, the same sub that generates the tile fails in the "End Sub" with 

"An unhandled exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll" and I'm unable to understand what I'm doing wrong.

My code: 

Imports System.IO
Imports System.Diagnostics
Imports Telerik.WinControls
Imports Telerik.WinControls.UI
Imports System.Threading
Imports System.ComponentModel


Public Class GridWindow
    Public watchfolder As FileSystemWatcher
    Dim itemCol As New List(Of String)
    Dim fileCount As Int32

    Public Sub fillGrid()
        Try

            Dim watchfdr As New FileSystemWatcher
            watchfdr.Path = My.Settings.sourcefldr
            Dim txtFiles = Directory.GetFiles(watchfdr.Path, "*.*", SearchOption.TopDirectoryOnly).[Select](Function(nm) Path.GetFileName(nm))
            If txtFiles.Count > 0 Then
                For Each filenm As String In txtFiles
                    itemCol.Add(filenm)
                Next
                fileCount = itemCol.Count()

            End If
            If itemCol.Count > 0 Then
                For Each filenm In itemCol
                    AddNewImageTile(filenm)
                Next
            End If
            watchfdr.NotifyFilter = IO.NotifyFilters.DirectoryName
            watchfdr.NotifyFilter = watchfdr.NotifyFilter Or _
                                       IO.NotifyFilters.FileName
            watchfdr.NotifyFilter = watchfdr.NotifyFilter Or _
                                       IO.NotifyFilters.Attributes

            AddHandler watchfdr.Created, AddressOf fileAdded
            watchfdr.EnableRaisingEvents = True



        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try

    End Sub

 
    Private Sub fileAdded(ByVal source As Object, ByVal e As System.IO.FileSystemEventArgs)

        Try
            If e.ChangeType = IO.WatcherChangeTypes.Created Then
                Dim shortPath As String = e.FullPath.Substring(e.FullPath.LastIndexOf("\") + 1)
                AddNewImageTile(shortPath)
                'itemCol.Add(e.FullPath.ToString())
               
            End If
        Catch ex As Exception
            MessageBox.Show("Exception in fileAdded: " & ex.Message)

        End Try

    End Sub


    Private Sub AddNewImageTile(ImagePath)
        Try
            Dim img As Bitmap = CType(Image.FromFile(My.Settings.sourcefldr.ToString & "\" & ImagePath, True), Bitmap)
            Dim newTile As New RadTileElement()
            newTile.AutoSize = True
            newTile.AutoSizeMode = Telerik.WinControls.RadAutoSizeMode.Auto
            newTile.GradientStyle = Telerik.WinControls.GradientStyles.Linear
            newTile.Image = img
            newTile.Padding = New System.Windows.Forms.Padding(1)
            newTile.Size = New System.Drawing.Size(214, 276)        
            newTile.Row = RadPanorama1.Items.Count Mod Me.RadPanorama1.RowsCount
            newTile.Column = RadPanorama1.Items.Count / Me.RadPanorama1.RowsCount
            newTile.Visibility = ElementVisibility.Visible
            Me.RadPanorama1.Items.Add(newTile)

        Catch ex As Exception
            MessageBox.Show("Exception in AddNewImage: " & ex.Message)
        End Try

    End Sub



    Public Sub New()

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

        ' Add any initialization after the InitializeComponent() call.
        fillGrid()

    End Sub



End Class

​

In a progress openedge form which inherits from Telerik.WinControls.UI.RadForm, I have added this line into the constructor :

ThemeResolutionService:ApplicationThemeName = "visualStudio2012Dark" .

However the theme is not being applied to the application. 

Can someone please help out?
Thanks

The appointment not showed when  RadScheduler1.GroupType = GroupType.Resource

           dt = ObjDS.Tables(0)
            dt2 = ObjDS2.Tables(0)

            appointmentMappingInfo.Start = "StartTime"
            appointmentMappingInfo.End = "EndTime"
            appointmentMappingInfo.Summary = "TaskDetails"
          
            resourceMappingInfo.Id = "StaffID"
            resourceMappingInfo.Name = "StaffFullName"

            

            SchedSource.EventProvider.Mapping = appointmentMappingInfo
            SchedSource.EventProvider.DataSource = dt
            SchedSource.ResourceProvider.Mapping = resourceMappingInfo
            SchedSource.ResourceProvider.DataSource = dt2
          

            RadScheduler1.DataSource = SchedSource
            RadScheduler1.GroupType = GroupType.Resource​

Hi everyone,

 I've got a Hierarchical grid in my form. All of my Parent row have a button "+" to allow user to expand children row even if they haven't any child.

 Is there any way to hide this button when a parent doesn't have any child.

Thanks in advance.

Best regards

Tony