Questions on UI for WinForms Forum

1 answer

191 views

Virtual Mode with Just-In-Time Data Loading

Dear support staff,
I am currently working on a project with a very large table(millions of records) in a remote database using c# and mysql database.
Without going in to too much details, I use the datagridview in VS2010 with the (Virtual Mode with Just-In-Time Data Loading)
as illustrated in this article:

https://msdn.microsoft.com/en-us/library/ms171624%28v=vs.110%29.aspx

Does your gridview support the Virtual Mode with Just-In-Time Data Loading or any thing similar to it that retrieve query result in potions?

yours Murad

GridView

answered on 24 Mar 2016

1 answer

158 views

Custom Editor - Missing first Keystroke

I am evaluating RadGridview. I need to create lots of custom editors for my upcoming project. To begin with, I just created a simple texteditor with the following code (I referred you demo code for this) .The issue is, the control losing the first key stroke. Suppose I start to edit a column by typing "John" then the column only showing "ohn".

Did I miss something ??

class MyTextEditor : BaseGridEditor

{

public RadFormProductList ListForm { get; set; }

protected override RadElement CreateEditorElement()

{

var editor = new MyTextEditorElement();

return editor;

}

public override object Value

{

get

{

MyTextEditorElement editor = (MyTextEditorElement)this.EditorElement;

return editor.Text;

}

set

{

MyTextEditorElement editor = (MyTextEditorElement)this.EditorElement;

if (value != null && value != DBNull.Value)

{

editor.Text = value.ToString();

}

else

{

editor.Text = "";

}

public class MyTextEditorElement : RadTextBoxElement

{

public MyTextEditorElement()

{

this.BackColor = Color.White;

this.ShowBorder = false;

}

protected override Type ThemeEffectiveType

{

get

{

return typeof(RadTextBoxEditorElement);

}

GridView

answered on 24 Mar 2016

3 answers

88 views

ScatterSeries.Shape = DiamondShape

I have a scatter series, and setting the Shape to Telerik.WinControls.UI.DiamondShape does not work. It gives me no markers at all.

ChartView

answered on 24 Mar 2016

2 answers

171 views

Cell Style ViewCellFormatting

With this code I get the following (NOT_OK.png)

01.Private Sub RadGridView1_ViewCellFormatting(sender As Object, e As CellFormattingEventArgs) Handles RadGridView1.ViewCellFormatting

02. If TypeOf e.CellElement Is GridHeaderCellElement Then

03. With e.CellElement

04. Dim myFont As New Font(New FontFamily("Calibri"), 10.0F, FontStyle.Bold)

05.

06. If InStr(.Text, "IN") > 0 Then

07. xColor = Color.FromArgb(150, 54, 52)

08. ElseIf InStr(.Text, "OUT") > 0 Then

09. xColor = Color.FromArgb(54, 96, 146)

10. ElseIf .Text = "Fecha" Then

11. xColor = Color.FromArgb(38, 38, 38)

12. End If

13.

14. .DrawBorder = True

15. .DrawFill = True

16.

17. .Font = myFont

18. .ForeColor = Color.White

19. .GradientStyle = GradientStyles.Solid

20. .BackColor = xColor

21. End With

22. Else

23. Dim xColor As Color = Color.Red

24. Dim xWidth As Integer = 5

25. With e.CellElement

26. '.DrawFill = True

27. '.NumberOfColors = 1

28. '.BorderBoxStyle = BorderBoxStyle.FourBorders

29. Select Case .ColumnIndex

30. Case 9 '0, 9, 16

31. .BorderRightColor = xColor

32. .BorderRightWidth = xWidth

33. End Select

34. End With

35. End If

36.End Sub

what I need is OK.png

Thank you,

GridView

answered on 23 Mar 2016

3 answers

257 views

Event after PDF contents loaded

Hi,

I need an event that fire only after the contents of PDF is displayed. The DocumentLoaded is fired after the .pdf load, but not displayed yet.

Thanks

Paulo

PdfViewer and PdfViewerNavigator

answered on 23 Mar 2016

1 answer

80 views

bug: property builder corrupts form

In certain cases, the property builder totally corrupts your windows form and makes the Rad grid unsable, undeletable and un-editable . It happens If you inadvertently click "Open Property Builder" on a RadGridView while your project is running (yes, sometimes you forget it is running and still have the form designer window open), if you try and make some changes to the MasterTemplate and click "Ok" it renames your grid to "MasterTemplate" and makes it unsable, even while your program is running.

The grid then becomes corrupt and you cant delete it or fix it.

Test it by starting a new VB winforms project in VS2015, drag a radgrid onto the form, run the exe in VS and then click on property builder on the rad grid. make a few changes to master template and click ok.

Your form will now be unrecoverably corrupt.

GridView

answered on 22 Mar 2016

3 answers

523 views

connect to SQLite

Have someone tried to connect the ganttview with a SQLite database?

GanttView

answered on 22 Mar 2016

3 answers

294 views

Scheduler and MySQL Database

Good day!

It is necessary that the Scheduler worked with MySQL database and not MsAccess. And, preferably, to explain the connection and filling in the data via code and not using the Visual Studio.

Best regards, Me!

Scheduler and Reminder

answered on 22 Mar 2016

2 answers

126 views

how to hide RadButtonElement control in panel of type RadPanelBarGroupElement

In my application
I have Telerik.WinControls.UI.RadPanelBarGroupElement
panel called "panelCompany" , and it has collections of three items of type
RadButtonElement

items called
addCompany
deleteCompany
updateCompany

in my application , i prevent some users to use delete option , so hide "deleteCompany "

FormMain.deleteCompany.Visibility = Telerik.WinControls.ElementVisibility.Hidden

at this point any thing is OK , but when i click on panel "panelCompany " , the button "deleteCompany" is visible again
what can i do to hide RadButtonElement control forever ?

Panel

answered on 21 Mar 2016

9 answers

328 views

ChartView Plot Area

Hi there,

I am building a custom pan/zoom lasso control and am looking at how to find out the exact coordinates of the rectangle relative to the plotted grid area, also be handy for a mouse location based pan/zoom control via the mouse wheel.

It seems to some combination of the ChartviewArea minus the various sizes and marigns for the Chart and the title and the legend plis their sizes.

I haven't had any luck finding them and I haven't had any luck finding the Axes Length and Width.

This will be useful for also adding my own annotations.

Also plan to add a view dataset which will change the number of records displayed depending on the pan zoom controls for my datasets which are from 1 to 16000 dtapoints.

Hopefully if I solve all this I can post up a demo project which handles these various circumstances for complex chart data analysis.

Alternatively would I be better off embedding the Chart control from Reporting to achieve these various features, (probably need to anyway to achieve vector graphic charts for the pdf exports).

Best regards,

Kurt Scholz
LogTag Recorders Ltd
Lead Software Developer
DevCraft Complete

ChartView

answered on 21 Mar 2016