I have a grid populated from a base class. The base class has a enum property to identify what type of derived object it is. When the user adds a new row and changes that enum value, I need to replace the object with the associated derived type. Example:

The grid will initially create a new row with a DataBoundObject of Type 'Base'.

When the the user changes the 'ObjectType' column to 'ObjectType.ChildA' I need to replace the row's DataBoundObject with a new instance of 'ChildA'.

The grid's DataSource is set to a BindingSource; who's DataSource is set to BindingList<Base>.

I tried to replace the object in the BindingList. Then set the BindingSource.DataSource to the updated BindingList. And then call BindingSource.ResetBindings(false) to updated the GridView. But I receive a NullReferenceException.

How can I replace the Row's DataBoundObject with a derived object?

I have a form that loads an existing pdf into a radPdfViewer. The user then has the option to move this file to a new location, with a new file name and then delete the original file.

I am able to load and view the original pdf. I am also able to export this file to a new location with a new file name. The problem occurs when I attempt to delete the original file. I am receiving the error message "The process cannot access the file ... because it is being used by another process."  Obviously I am not disposing of something properly, but I am unsure of the correct steps to take.  Any help would be appreciated.

I am using Visual Studio 2015 and the following code:

Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load

        RadPdfViewer1.LoadDocument(OriginalFileName)
    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim exportProvider As New Telerik.Windows.Documents.Fixed.FormatProviders.Pdf.PdfFormatProvider
        Dim NewFile As RadFixedDocument = exportProvider.Import(System.IO.File.OpenRead(OriginalFileName))
        Dim out As System.IO.Stream = System.IO.File.OpenWrite(NewFileName)

        exportProvider.Export(NewFile, out)
        out.Flush()
        out.Dispose()
        out.Close()
        NewFile = Nothing
        exportProvider = Nothing
        RadPdfViewer1.UnloadDocument()
        System.IO.File.Delete(OriginalFileName)            ----> this is the line that gives the error
    End Sub

Hi.

How can i change the distance between a CategoricalAxis and its label ?

( my chartview have two horizontalAxis. the top one have this gap problem )

Hi,

 If I place a RadLayoutControl into a UserControl, then trying to add any toolbox controls into it,

Visual Studio will crash.

 Using Visual Studio 2013 Update 4

Telerik Winforms version: 2015.2.728.40

If I place RadLayoutControl into a WinForm/RadForm, then try to add controls into it will be fine.

 Looks like the RadLayoutControl needs to reside in a form instead of UserControl? Don't know this is a bug or it is meant to be.

What I'm trying to do is design UserControls which can be loaded into RadDock's document windows at runtime. 

Best Regards,

Then I tried to loop through each row of the radGrid and assign a picture to the imageColumn:

Note: In this example I'm simply trying to assign the same picture to every row. Later I will add logic to add the specific picture required.

Running this code produces a blank image column. No error is returned.

I have tried image values of c:\myPicture.jpg, c:\\\myPicture.jpg, and @c:\myPicture.jpg

What am I doing wrong?

Dim imageColumn As New GridViewImageColumn
imageColumn.Name = "ImageColumn"
imageColumn.HeaderText = "Picture"
imageColumn.ImageLayout = ImageLayout.Zoom
RadGridView1.MasterTemplate.Columns.Add(imageColumn)

For i As Integer = 0 To RadGridView1.Rows.Count - 1
    RadGridView1.Rows(i).Cells("ImageColumn").Value = "c:\myPicture.jpg"
Next

Dim imageColumn As New GridViewImageColumn
imageColumn.Name = "ImageColumn"
imageColumn.HeaderText = "Picture"
imageColumn.ImageLayout = ImageLayout.Zoom
RadGridView1.MasterTemplate.Columns.Add(imageColumn)

For i As Integer = 0 To RadGridView1.Rows.Count - 1
    RadGridView1.Rows(i).Cells("ImageColumn").Value = "c:\myPicture.jpg"
Next

Hi,

My goal is putting a flow diagram into our software in accordance with the values that came. It has to be via code. But i couldn't find any documentation about it.

I can put shapes programmatically. However,i have no idea about creating bindings between them by lines, setting up positions without ruining.

If you may give some hints, examples or lead me .i'll be thankful.

 An example attached.

 Regards,

 Onur