Questions on UI for WinForms Forum

9 answers

169 views

Hi when i drag and drop one multicolumncombobox, and change some properties that i need for all my comboboxes.

Then I try copy this control by control + c and then control + v -> finally a bug appear.

the nesteddatagrid is out of container control(multicolumcombobox).

this behaviour is not normal.

Thanks.(only work around that i found was in designer copy all code and paste it this again) but there is no good work around.

MultiColumn ComboBox

answered on 11 Sep 2015

6 answers

122 views

Hiding certain ColumnGroup Headers

I have a column group that contains 5 rows. I wish to hide the headers of the last 4 rows. I did put in the following code in the viewcellformatting event (below, but it did not hide the column group rows. My headertext on those rows are empty, and the images are attached. "Capture2.jpg" is the image before using the viewcellformatting event code. "Before.jpg" is the event code below being implemented, and "result.png" is what I am attempting to achieve. Thanks in advance for any help.

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

        If TypeOf sender Is GridHeaderCellElement Then
            e.CellElement.Visibility = Telerik.WinControls.ElementVisibility.Collapsed
            e.CellElement.AutoSize = False
            e.CellElement.MaxSize = New Size(0, 0)
           e.CellElement.MinSize = New Size(0, 0)
           e.CellElement.Size = New Size(0, 0)

       End If

End Sub

GridView

answered on 11 Sep 2015

2 answers

158 views

Image on header row

Hello, I need help to add an image, the header of a row if it meets a condition.

I want to replace the default image for any other.

Sorry for my bad English.

Regards

GridView

answered on 10 Sep 2015

3 answers

1.4K+ views

Setting TimePicker to a null value in VB

I'm not databinding, just trying to set the timepicker to null. I can set the nulltext property, but how to set the value to null?

Later

Art

Calendar, DateTimePicker, TimePicker and Clock

answered on 10 Sep 2015

3 answers

97 views

RadChartView in RadRotator

Dear,
I would like to know how I can add a radChartView a WinForms UI RadRotator

Rotator

answered on 10 Sep 2015

9 answers

608 views

RadButton Selected State?

I would like to be able to Set not only isPressed or Mouse Over. I would like to change the visual style of the button as soon as it is selected. how can i accomplish this with the visual theme builder. i tried everything but it just does not keep the style i applied to isPresses or mousedown.
thank you

Buttons, RadioButton, CheckBox, etc

answered on 10 Sep 2015

10 answers

590 views

RADGridView Header Height & Tooltip

Can we change RADGridView Header Height at runtime?

Situation is like this:

I need to display following like RadGridview in Windows Application.

.......... | Col1        |       Col2         |        Col3     |................
.......... |Col11|Col12|Col13| c | c | c | c | c | ....................
                             | o | o | o| o | o |
                             | l | l | l | l | l |
                          | 21 |22 |23|24 |25 |

1) Is that possible to display column header vertically?
2) If (1) is not possible then can we change Header height?
3) can we give ToolTip to each column header and its sub-column header?

Probably attached image may clear the idea.
Is there any solution for this situation?

Thanks.

GridView

answered on 10 Sep 2015

1 answer

137 views

Change the theme for a particular RadPageViewStrip item

Hello Telerik

I have a RadPageView in Strip Mode and I would like to highlight some pages on runtime.

By highlighting I mean change the theme color for the different state (selected, mouse over, etc.) of the RadPageView. The business need is to show the user which pages needed an action.

I have found how to change the backcolor of a RadPageView but not for the different state of the control. Is there a way to do it without handling multiple event ?

PageView

answered on 09 Sep 2015

4 answers

231 views

Chart view image doesn't work correctly

Hi,

I'm facing a strange behaviour when i export a userControl containing a ChartView as a png picture.
Let's explain my issue with code.

First i create a userControl, this userControl has a title ( label) and a chartView.

this chart is slightly customized, i want to show checkboxes as legend items. to do this, i have followed an example mentioned in the forum.

If the checkbox is unckeced the related serie is hidden.

var myUserControl = new StatisticLayoutWithAdditionalStats();

myUserControl.ChartView.ChartElement.LegendElement.VisualItemCreating += LegendElement_VisualItemCreating;

/// Set layout properties

myUserControl.Title = "Blablabla";

myUserControl.ChartView.AreaType = ChartAreaType.Cartesian;

myUserControl.ChartView.ShowLegend = true;

LineSeries serie1 = new LineSeries();

LineSeries serie2 = new LineSeries();

serie1.DataSource = new BindingList<Coordinate>(Serie1DataSource.Coordinates);

serie1.CategoryMember = "Abscissa";

serie2.DataSource = new BindingList<Coordinate>(Serie2DataSource.Coordinates);

serie2.CategoryMember = "Abscissa";

serie2.ValueMember = "Ordinate";

myUserControl.ChartView.Series.Add(serie1);

myUserControl.ChartView.Series.Add(serie2);

// This class is used to customize legend items

public class CheckBoxLegentItemElement : LegendItemElement

{

private RadCheckBoxElement checkBox = new RadCheckBoxElement();

public CheckBoxLegentItemElement(LegendItem item)

{

this.checkBox.ToggleStateChanged += checkBox_ToggleStateChanged;

}

void checkBox_ToggleStateChanged(object sender, StateChangedEventArgs args)

{

if (args.ToggleState == Telerik.WinControls.Enumerations.ToggleState.On)

{

this.LegendItem.Element.IsVisible = true;

}

else

{

this.LegendItem.Element.IsVisible = false;

}

If i display this userControl in a Form it works fine.

But i want to export this userControl as a picture, the userControl can't be displayed in a form, juste created in memory.

myUserControl.Size = new Size(600,400);

Bitmap bitmap = new Bitmap(600, 400);

myUserControl.DrawToBitmap(bitmap, (myUserControl.ClientRectangle));

If all checkboxes are checked, the image is good.

But if, at least, one of them is uncheck the graph doesn't display.

Do you have any explanation ?

Regards,

Mathieu

ChartView