Add support for visualizing and editing charts.

Hello,

 

So here's what happens. I create a workbook and a worksheet in that wb which I assign as the workbook of a RadSpreadSheet by RadSpreadSheet..Workbook = wb

The first time I assign a name to the first (and only sheet) created in the creation of the wb, the name does appear on that sheet.

Then some code takes this workbook ByVal, creates a new Sheet, makes that sheet the wb's ActiveWorksheet and then changes the ws's name.

You can see in the debugging that the worksheet does have the new name i put there ("2018-05"), but visually this 2nd worksheet has the default name "sheet 2".

Then that wb which is returned by the function is assigned as the RadSpreadSheet's workbook

If I run the code again, so a 3rd sheet is created, then the 3rd sheet will visually have the default name "sheet 3", however in the debugger it says "2018-06" as its name; but most importantly, now sheet 2 has magically changed to what I was seeing its name to be in the debugger ("2018-05").

 

I'm assuming that If I'm changing the sheet names at runtime, I need to call some method on the Workbook element or something like that in order to update the names. I just couldn't find which method to call.

 

Best regards,

Ioannis Mamalikidis.

Hello,

 

I have a RadRibbonForm with a normal ribbon with no items and a spreadsheet control.

 

I iterate over a datatable and fill the spreadsheet's cell values with the datatable's values

we're talking about a very small size, like 33 rows x 35 columns, and not even all the values are filled in.

 

Unfortunately, there's a very noticeable delay in the spreadsheet, from moving the scrollbars to selecting to changing sheets.. the whole thing feels laggy.

Is this just how it is, or am I experiencing a possible bug?

Could it have anything to do with https://feedback.telerik.com/winforms/1380948-exception-at-runtime-trial-bug ?

 

If that is just how it is, is there anything I can do to make it feel snappier? Disable a theme? Disable some behaviour?

Hello,

 

So, I'm testing the Telerik suite, part of which is the RadSpreadSheet. I'm currently using the 30 days trial.

So, when I'm debugging it and I'm instantiating a new form that contains the RadSpreadSheet, the programme will about 50% of the time create an exception of object reference not set to an instance of an object
Now, I've only noticed this with forms that contain a radspreadsheet but it could have nothing to do with it.

What always happens before I get the exception is that the reminder to buy a Telerik License appears (the programme halts until I choose an option) and when the dialogue disappears, the exception happens.

 

Please note that if I just push "F5" again in VS, without changing anything anywhere, so after the crash immediately debug (F5) again, the exception will not occur.

The data validation rule should have values for formula1 and formula2 elements, which define the start and end values for a range to validate between. When such values are missing, a NullReferenceException is thrown on import and the document cannot be imported. As a workaround, the document can be modified by deleting the AlternateContent attribute.

To reproduce:
- Add a spreadsheet and add ribbon bar from the smart tag. 
- Start the application.

Workaround:
protected override void OnShown(EventArgs e)
{
    base.OnShown(e);
    var parameter = 11;
    this.radSpreadsheet1.SpreadsheetElement.CommandDescriptors.SetFontSize.Command.Execute(parameter);

    FontFamilyInfo parameter1 = new FontFamilyInfo(new System.Windows.Media.FontFamily("Calibri"));
    this.radSpreadsheet1.SpreadsheetElement.CommandDescriptors.SetFontFamily.Command.Execute(parameter1);
}

To reproduce: please refer to the attached gif file demonstrating how to replicate the problem with the Demo application. Scroll with the mouse wheel and you will notice the the row index disappears until you click a cell. Using the thumb will behave as expected. 

Workaround:
this.radSpreadsheet1.SpreadsheetElement.VerticalScrollBar.ValueChanged+=VerticalScrollBar_ValueChanged;
        private void VerticalScrollBar_ValueChanged(object sender, EventArgs e)
        {
            this.radSpreadsheet1.SpreadsheetElement.InvalidateMeasure(true);
        }

Set the Print Area as described here: https://docs.telerik.com/devtools/document-processing/libraries/radspreadprocessing/features/worksheetpagesetup

RadSpreadsheet must support printing using RadPrintDocument. 

Ideally we should expose the events in the RadPrintDocument object.

Workaround handling the PrintPreview method:
private void button1_Click(object sender, EventArgs e)
{
    RadPrintDocument printDocument = new RadPrintDocument();
    IPrintable printManager = typeof(RadSpreadsheetElement).GetProperty("PrintManager", BindingFlags.Instance | BindingFlags.NonPublic).GetValue(this.radSpreadsheet1.SpreadsheetElement) as IPrintable;
    printDocument.AssociatedObject = printManager;

    printDocument.BeginPrint += PrintDocument_BeginPrint;
    printDocument.PrintPage += PrintDocument_PrintPage;
    printDocument.EndPrint += PrintDocument_EndPrint;
    printDocument.QueryPageSettings += PrintDocument_QueryPageSettings;
    SpreadsheetPrintPreviewDialog printPreviewDialog = new SpreadsheetPrintPreviewDialog(printDocument);
    printPreviewDialog.ThemeName = this.radSpreadsheet1.ThemeName;
    printPreviewDialog.ShowDialog();
}

private void PrintDocument_QueryPageSettings(object sender, System.Drawing.Printing.QueryPageSettingsEventArgs e)
{
    
}

private void PrintDocument_EndPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
{
    
}

private void PrintDocument_BeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
{
    
}

private void PrintDocument_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
}

Workaround: create a custom input behavior class and manually handle the navigation when holding the Shift key
public partial class SpreadsheetForm : Telerik.WinControls.UI.RadForm
{
    public SpreadsheetForm()
    {
        InitializeComponent();

        FieldInfo behaviorFi = typeof(RadSpreadsheetElement).GetField("inputHandler", BindingFlags.Instance | BindingFlags.NonPublic);
        behaviorFi.SetValue(this.radSpreadsheet1.SpreadsheetElement, new CustomSpreadsheetInputBehavior(this.radSpreadsheet1.SpreadsheetElement));
    }
}

public class CustomSpreadsheetInputBehavior : SpreadsheetInputBehavior
{
    public CustomSpreadsheetInputBehavior(RadSpreadsheetElement element)
    : base(element) { }

    public override void ProcessKeyDown(KeyEventArgs e)
    {
        base.ProcessKeyDown(e);

        if (e.Shift)
        {
            switch (e.KeyCode)
            {
                case Keys.Left:
                    this.Spreadsheet.ActiveWorksheetEditor.Commands.UpdateActiveSelectionRangeCommand.Execute(MovementType.MoveToPreviousColumn);
                    break;
                case Keys.Up:
                    this.Spreadsheet.ActiveWorksheetEditor.Commands.UpdateActiveSelectionRangeCommand.Execute(MovementType.MoveToPreviousRow);
                    break;
                case Keys.Right:
                    this.Spreadsheet.ActiveWorksheetEditor.Commands.UpdateActiveSelectionRangeCommand.Execute(MovementType.MoveToNextColumn);
                    break;
                case Keys.Down:
                    this.Spreadsheet.ActiveWorksheetEditor.Commands.UpdateActiveSelectionRangeCommand.Execute(MovementType.MoveToNextRow);
                    break;
            }
        }
    }
}

This is possible in WPF

Workaround: Handle the MouseWheel event of the control

private void RadSpreadsheet1_MouseWheel(object sender, MouseEventArgs e)
{
    int offset = this.radSpreadsheet1.SpreadsheetElement.VerticalScrollBar.SmallChange * 3;
    int x = e.Delta < 0 ? offset : -offset;
    this.radSpreadsheet1.SpreadsheetElement.VerticalScrollBar.ClampValue = true;
    this.radSpreadsheet1.SpreadsheetElement.VerticalScrollBar.Value += x;

    RadWorksheetEditor editor = this.radSpreadsheet1.SpreadsheetElement.ActiveSheetEditor as RadWorksheetEditor;
    if (editor != null)
    {
        IRadWorksheetEditorPresenter presenter = (IRadWorksheetEditorPresenter)editor.GetType().GetField("activePresenter", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).GetValue(editor);
        presenter.SetVerticalOffset(presenter.VerticalOffset + x);
        editor.InvalidateMeasure(true);
    }
}

The control can be resized in the designer.  The resize operation starts with a slight delay and it is necessary to wait for this initial delay. From then on the control can be freely resized. The attached gif file illustrates this.

Workaround:
1. Set the size using the property grid
2. Add a panel and dock the control to fill the panel, then resize the panel

How to reproduce: check the attached project and the remaining memory after disposing the forms.

To reproduce:
- Open the first look example. 
- Choose Save from the backstage button.
- Currently, the default is PDF, It should be xlsx.