Hello

I need a drag Drop from gridview to listview.

I have followed the code from the documentation and everything works finew up to the drop on the ListView where I fail to identify the row of the listview into which the drops occurs.

I have the following code (copied from Telerik's documentaiton)

                    targetCell.Text = srcRow.RowInfo.Cells("Name").Value
                    Dim targetElement As DetailListViewElement = TryCast(e.HitTarget, DetailListViewElement)
                    Dim targetVisualItem As BaseListViewVisualItem = targetCell.RowElement
                    Dim insertIndex As Integer = targetCell.Row.ListView.Items.IndexOf(targetVisualItem.Data)

and I get an error on .row and .rowelement which are "not members ..."

Am I missing a reference or is it a change of the components ?

I need to get the row of the listview when I perform the drom on the cell

Thanks in advance for any advice

Best Regards

Pierre-Jean

Hi,

 I'm trying to migrate an app that was written in WPF using default tree view to Telerik UI WinForms RadTreeView. For the default tree that has been used previously I had an ObservableCollection to which I could add items and the change would be displayed in the TreeView immediately without me triggering any update method. However, with the Telerik's solution, when I set the DataSource to the observable collection, no change is visible even though that observable collection has been modified.

The final result that needs to be achieved is to be able to display folder structure on a disc. Now obviously, I don't want to load a folder and all of its subfolders at once, but rather only load the content when the user decides to open the given folder.

Can this be achieved using ObservableCollection and without the need of triggering some sort of update method?

Thanks

I just updated to the latest Winforms release and now none of the Winforms will open in the designer.  All have the same error message (attached in the screenshot as well).

Instances of this error (1)

1. Hide Call Stack
at System.ComponentModel.TypeDescriptor.AddAttributes(Object instance, Attribute[] attributes)
at Microsoft.VisualStudio.Design.VSDesignSurface.CreateDesigner(IComponent component, Boolean rootDesigner)
at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo)
at System.ComponentModel.Design.DesignerHost.PerformAdd(IComponent component, String name)
at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design.IDesignerHost.CreateComponent(Type componentType, String name)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer)
at System.ComponentModel.Design.Serialization.DesignerSerializationManager.System.ComponentModel.Design.Serialization.IDesignerSerializationManager.CreateInstance(Type type, ICollection arguments, String name, Boolean addToContainer)
at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration)
at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager)
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)
at System.ComponentModel.Design.Serialization.BasicDesignerLoader.BeginLoad(IDesignerLoaderHost host) 

Hi,

I'm using Telerik version 2020.3.918.1, in Visual Studio version 16.1.1, and getting the following error when trying to export a radgridview to excel in VB.net: 

System Entry Point Not Found. 

on the line:          spreadExporter.RunExport(fileName, exportRenderer)

I am able to export using Telerik export process using a solution that Dess provided on another thread, but it was in C#.    When I change the code to VB, and use the same references, I get this error.   I get the same error when I create a quick project from scratch (add a grid, load it, add references, and export...)   (Code below)

Any ideas?   Thanks, Evan 

References include:  Telerik.WinControls, Telerik.WinControls.GridView, Telerik.WinControls.UI, Telerik.Common, and Telerik.Export

-----------------------------------------------------------------------------------------------

Imports Telerik.WinControls.Export

  Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        'Dim spreadExporter As GridViewSpreadExport = New GridViewSpreadExport(RadGridView1)
        'Dim exportRenderer As New SpreadExportRenderer()
        'spreadExporter.RunExport("exportedFile.xlsx", exportRenderer)

        'Dim exportFile As String = "..\..\exportedData.xlsx"
        'Using ms As New System.IO.MemoryStream()
        '    Dim exporter As New Telerik.WinControls.Export.GridViewSpreadExport(Me.RadGridView1)
        '    Dim renderer As New Telerik.WinControls.Export.SpreadExportRenderer()
        '    exporter.RunExport(ms, renderer)

        '    Using fileStream As New System.IO.FileStream(exportFile, FileMode.Create, FileAccess.Write)
        '        ms.WriteTo(fileStream)
        '    End Using
        'End Using

        Dim fileName As String = "..\..\exported" & DateTime.Now.ToLongTimeString().Replace(":", "_") & ".xlsx"
        Dim spreadExporter As GridViewSpreadExport = New GridViewSpreadExport(Me.RadGridView1)
        Dim exportRenderer As SpreadExportRenderer = New SpreadExportRenderer()
        'exportRenderer.WorkbookCreated += exportRenderer_WorkbookCreated
        spreadExporter.ExportVisualSettings = True
        spreadExporter.RunExport(fileName, exportRenderer)
        Process.Start(fileName)

    End Sub

Hi all,

I'm trying to customize an item,but I'm stuck, I hope someone could help...

What I need is to show inside my PropertyGrid a value (a string) with a button aside (the typical [...] ).

Clicking the button will open up a custom form, from which a new value can be selected.

So something like the following code, which I've found in another thread:

That's fine, but I need a brand new form, not a predefined one.

Is this possible?

Thank you!

Hi, 

I currently develop an application on Windows 10 on a tactile device uses a RadPageView (explorerBar mode).

I want to use gesture to control the scroll, i set the enableGesture to Pan.

And in PanGesture event, i have the code :

Only the scroll bar moves, not the control

 Thanks for your help :)

NB : I'm using Q1-2015

I've looked all over but haven't been able to find VisualStyleBuilder's source code. Is there any chance I could download the source code to use to build in-house tools with?  

Thanks - Jason

Hello & Thanks ;

I have written a KidSafeBrowser in vs vb.net .vb , but it uses IE11 , which has too many limitations .

So I am looking into Chromium & others .

Does Telerik WinForms use Chromium ?

Thanks for your Help...

I have a RadGridView with some groupings and summery rows.

is it possible to show summary values in group row (instead of adding extra row in top/bottom)? Please refer to attached image.
Note: i want do that in Excel output too.

Thanks so much

Good day,
I merged document file using the following code which was successful.
Please how can I split it into two columns l ike in book form? Such that it will have two columns left and right with a vertical line at the center of each page (I.e. Divid each page into two columns with a vertical line at the center) without any third party dll file or assembly file.

Thank you.

Obi

Dim missing As Object = System.Type.Missing
Dim pageBreak As Object = Microsoft.Office.Interop.Word.WdBreakType.wdSectionBreakNextPage
Dim outputFile As Object = outputFilename
Dim wordApplication As Microsoft.Office.Interop.Word._Application = New Microsoft.Office.Interop.Word.Application()
Try
    Dim wordDocument As Microsoft.Office.Interop.Word.Document = wordApplication.Documents.Add(missing, missing, missing, missing)
    Dim selection As Microsoft.Office.Interop.Word.Selection = wordApplication.Selection
    Dim documentCount As Integer = filesToMerge.Length
    Dim breakStop As Integer = 0
    For Each file As String In filesToMerge
        breakStop += 1
        selection.InsertFile(file, missing, missing, missing, missing)

        If insertPageBreaks AndAlso breakStop <> documentCount Then
            selection.InsertBreak(pageBreak)
        End If
    Next
    wordDocument.SaveAs(outputFile, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing)
    wordDocument = Nothing
Catch ex As Exception
    Throw ex
Finally
    wordApplication.Quit(missing, missing, missing)
End Try