I am working on a Windows Forms Application that automatically loads a PDF file and then scrolls through the pages.  I am using 2 timers, one to scroll the page, and the other to check for a new version of the PDF file.  When I find a new version of the PDF file, I unload the current file and then load the new file.  All of this appears to work.  The problem is that the document does not appear unless I click on the form.  I can see the scroll bar moving.

Here is the subroutine that loads the document:

    Private Sub LoadPDFFile()

        If File.Exists(My.Settings.PDFFileName) Then
            mCurrrentFileInfo = My.Computer.FileSystem.GetFileInfo(My.Settings.PDFFileName)

            If PdfViewer.IsLoaded Then
                PdfViewer.UnloadDocument()
            End If

            PdfViewer.LoadDocument(My.Settings.PDFFileName)
            PdfViewer.PdfViewerElement.GoToPage(1)
        End If

    End Sub


OS: Windows 8
.Net 4.5
PDFViewer Version: 2014.2.715.40

I am experimenting with an application that will give me CPU Usage, Memory Usage, and I want to expand it from there. Right now it goes to two Text Boxes. I combined it into the first text box 

How do I display each value in two GridView Columns?

Here is what I have now;

Hello,

I develop stock manager application for my company

I've a error message  converter can't convert

With VS2013 DataGridView, it's work but not with RadGridView

My code :

Private Sub MasterTemplate_CellClick(sender As Object, e As Telerik.WinControls.UI.GridViewCellEventArgs) Handles RadGridView1.CellClick
        If e.ColumnIndex = 0 Then
            Dim oCell As GridViewCellInfo = DirectCast(RadGridView1.Rows(e.RowIndex).Cells(e.ColumnIndex), GridViewCellInfo)
            If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
                Dim oImage As Image = Image.FromFile(OpenFileDialog1.FileName)
                oCell.Value = resizeImage(oImage, 48, 48)
            Else
                Dim oResult As DialogResult = MessageBox.Show("Voulez-vous supprimer l'icône associée à ce produit ?", "Icône du produit", MessageBoxButtons.YesNo, MessageBoxIcon.Question)
                If oResult = Windows.Forms.DialogResult.Yes Then oCell.Value = Nothing
            End If
        End If
End Sub

Private Function resizeImage(ByVal oImage As Image, iWidth As Integer, iHeight As Integer) As Image
        Dim oSource As Bitmap = New Bitmap(oImage)
        Dim dScale As Double = oSource.Height / oSource.Width
        Dim oDest As New Bitmap(iWidth, iHeight)
        Dim gDest As Graphics = Graphics.FromImage(oDest)
        With gDest
            .InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic
            .SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias
            .CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality
            .DrawImage(oSource, 0, 0, oDest.Width, oDest.Height)
            Return oDest
        End With
End Function

Hi,

I use telerik Version 2011.1.411.2 (Runtime 2.0.50727).

I added a new colum in my database schema (for information double d_Value),
and I want that the data that is already memorized in database take value "1.0" not "0.0".

Can you explain how can I do ?

In advance, Thanks,
Richard.

Hello to all!

I've a GridViewMaskBoxColumn, where float are displayed using the exponental notation.  When I try to change a cells value, I can put the wished values, but when I leave the editor, the application crashs (even if I put only a '0')

The crash happens immediately after leaving the 'CellEndEdit'.

What went wrong in my source?

Thanks for your help!




   
   System.NullReferenceException wurde nicht behandelt.
  Message=Der Objektverweis wurde nicht auf eine Objektinstanz festgelegt.
  Source=Telerik.WinControls.UI
  StackTrace:
       bei Telerik.WinControls.UI.RegexMaskTextBoxProvider.KeyDown(Object sender, KeyEventArgs e)
       bei Telerik.WinControls.UI.RadMaskedEditBoxElement.TextBoxItem_KeyDown(Object sender, KeyEventArgs e)
       bei System.Windows.Forms.KeyEventHandler.Invoke(Object sender, KeyEventArgs e)
       bei Telerik.WinControls.RadItem.OnKeyDown(KeyEventArgs e)
       bei Telerik.WinControls.UI.RadTextBoxItem.TextBoxControl_KeyDown(Object sender, KeyEventArgs e)
       bei System.Windows.Forms.Control.OnKeyDown(KeyEventArgs e)
       bei System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
       bei System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
       bei System.Windows.Forms.Control.WmKeyChar(Message& m)
       bei System.Windows.Forms.Control.WndProc(Message& m)
       bei System.Windows.Forms.TextBoxBase.WndProc(Message& m)
       bei System.Windows.Forms.TextBox.WndProc(Message& m)
       bei Telerik.WinControls.UI.HostedTextBoxBase.WndProc(Message& message)
       bei System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       bei System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       bei System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
       bei System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
       bei System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
       bei System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
       bei System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
       bei System.Windows.Forms.Application.Run(Form mainForm)
       bei Maxsyma.PLCExplorer.Program.Main() in e:\...\SourceCode\Regex\Program.cs:Zeile 40.
  InnerException:



Here is my code:

private void InitializeGrid()
{
..
    newColumn = new GridViewMaskBoxColumn();    // for float
    newColumn.Name = "Gleitpunkt";
    newColumn.TextAlignment = ContentAlignment.MiddleRight;
    newColumn.Width = 60;
    newColumn.HeaderText = "Gleitpunkt";
    newColumn.FormatString = "{0:0.000000e0}";
    this.radGridViewCapture.Columns.Add(newColumn);
..
}

private void CellBeginEdit(object sender, GridViewCellCancelEventArgs e)
{
    if (this.radGridViewCapture.ActiveEditor is RadMaskedEditBoxEditor)
    {
        RadMaskedEditBoxEditor spinEditor = this.radGridViewCapture.ActiveEditor as RadMaskedEditBoxEditor;
        spinEditor.EditorElement.Alignment = ContentAlignment.MiddleCenter;
        spinEditor.EditorElement.StretchVertically = false;
        this.radGridViewCapture.CurrentCell.Alignment = ContentAlignment.MiddleCenter;
    }
}

private void CellEditorInitialized(object sender, GridViewCellEventArgs e)
{
    if (this.radGridViewCapture.ActiveEditor is RadMaskedEditBoxEditor)
    {
        RadMaskedEditBoxEditor spinEditor = this.radGridViewCapture.ActiveEditor as RadMaskedEditBoxEditor;
        if (e.Column.Name == ColumnName.Names[ColumnName.ResultGleitpunkt])
        {
            spinEditor.MaskTextBox.MaskType = MaskType.Regex;
            spinEditor.MaskTextBox.Mask = "[-+]?([0-9]*[,.])?[0-9]+([eE][-+]?[0-9]+)?"; // e.g. 123.4e+5
        }
    }
}

private void CellEndEdit(object sender, GridViewCellEventArgs e)
{
    if (e.Column.Name == "Gleitpunkt")
    {
        float myNewValue = float.Parse(e.Row.Cells[e.ColumnIndex].Value.ToString());
        
        // myNewValue is e.g. 0 or  123  or  123.4e-88 and is correct so far
    }
}            

I  have  Telerik winforms Q3 2011 SP1 version. I want to print a gridview but I didn't find RadPrintDocument. Is there any way gridview printing.

I need to disable the radbutton just before the click event is fired, and finally resume its enabled state after the click event.
I tried to create a property like this in my CustomRadButton:

But in debug I found out that the base.OnClick(e); event is asynchronous.

Can you suggest something to solve my problem?

Thanks

I'm using the Entity Framework with a Data Source and I would like to be able to drag and drop a field and have it be edited with a RadTextBox. When I go to customize, I see 15 Telerik controls in the list, but not RadTextBox, why not and what can I do to make the Telerik controls the default when using visual data sources. I click on the field, then Customize... and I have "Data UI Customization" selected with data type "String".

Thanks.

-John Baima

Hi all,
I've got a column containing Minutes as an integer.  I'm trying to sum this and format it as a Time Span like hh:mm (no seconds or days).
I'm not too familiar with the AggregateExpression strings.
Is there a way to cast that aggregate into a timespan, either during or after the sum from within the expression?

I've got a group summary and a grand total that this needs to appear on.


TimeWorked column - string value formatted by database in hh:mm format
MinutesWorked column - integer value  - need Timespan.FromMinutes(...)
FormatString - the ' = {0}' at the end is for checking the value of the sum.

Currently, for example:     hh:mm = 2239
Hoping for:                        37:19 = 2239

Or is tackling this in the expression not possible? 
Or maybe as it loads into the column?
I've tried/am trying events also but hoping the 3 lines of code is do-able...

Thanks

Is it possible to have a single line rich text box without showing scrollbars?

I ideally want to use it for the user to enter a hyperlink and click on it to go to that web page.

Thanks

Andez