Questions on UI for WinForms Forum

1 answer

341 views

Secondary Y axis

I am trying to find the best way to add a secondary Y axis for a line series. An example of this would be a Fahrenheit secondary Y axis for a Celsius primary Y axis. The best way I have figured out so far is to create a dummy series that is not visible and that shares the same X axis and color as the primary axis. The minimum and maximum values are then set based on the ActualRange of the primary axis. This is not ideal because the secondary axis ticks aren't being generated on round numbers.

Is there a better way to do this?

Is there an event that I can use to update the secondary Y axis minimum and maximum when the ActualRange of the primary axis changes?

// Create data table with test data

DataTable dataTable = new DataTable();

dataTable.Columns.Add(new DataColumn("Date", typeof(DateTime) ));

dataTable.Columns.Add(new DataColumn("Temp", typeof(float) ));

dataTable.Rows.Add(new DateTime(2016, 2, 1), 245.0f);

dataTable.Rows.Add(new DateTime(2016, 3, 1), 248.0f);

dataTable.Rows.Add(new DateTime(2016, 4, 1), 238.0f);

// Create line series for test data

LineSeries lineSeries1 = new LineSeries();

lineSeries1.Name = "Temperature";

lineSeries1.Spline = false;

lineSeries1.ValueMember = "Temp";

lineSeries1.CategoryMember = "Date";

lineSeries1.DataSource = dataTable;

// dummy line series for secondary axis

LineSeries dummyLineSeries = new LineSeries();

dummyLineSeries.Name = "Dummy Temperature";

dummyLineSeries.Spline = false;

dummyLineSeries.IsVisible = false;

dummyLineSeries.BorderColor = lineSeries1.BorderColor;

// X Axis definition

DateTimeCategoricalAxis DTcategoricalAxis1 = new DateTimeCategoricalAxis();

DTcategoricalAxis1.PlotMode = AxisPlotMode.OnTicks;

DTcategoricalAxis1.LabelFormat = "{0:MMMyy}";

DTcategoricalAxis1.Title = "Month-Year";

DTcategoricalAxis1.AxisType = Telerik.Charting.AxisType.First;

// Primary Y Axis definition

LinearAxis linearAxis1 = new LinearAxis();

linearAxis1.Title = "Temperature (°C)";

linearAxis1.AxisType = Telerik.Charting.AxisType.Second;

// Secondary Y Axis definition

LinearAxis linearAxis2 = new LinearAxis();

linearAxis2.Title = "Temperature (°F)";

linearAxis2.AxisType = Telerik.Charting.AxisType.Second;

linearAxis2.HorizontalLocation = AxisHorizontalLocation.Right;

// Add Axes to the line series

lineSeries1.HorizontalAxis = DTcategoricalAxis1;

lineSeries1.VerticalAxis = linearAxis1;

dummyLineSeries.HorizontalAxis = DTcategoricalAxis1;

dummyLineSeries.VerticalAxis = linearAxis2;

// Add line series to chart

radChartView1.Series.AddRange( lineSeries1, dummyLineSeries);

// Force secondary axis range to match adjusted

linearAxis2.Minimum = linearAxis1.ActualRange.Minimum * 1.8 + 32.0;

linearAxis2.Maximum = linearAxis1.ActualRange.Maximum * 1.8 + 32.0;

ChartView

answered on 07 Feb 2017

1 answer

87 views

Possible Bug with PrintPreview

I have a need of hiding the richtexteditor, populating it, and then doing a PrintPreview. I have discovered that if the control's "Visible" property is false, it does not work. The document is empty. It also does not work if you dynamically create the control at run-time. Thoughts? Obviously, I can add a control to the form and hide it behind another control, but that's a hack.

Dim foo As New RadRichTextEditor

Dim provider As New HtmlFormatProvider()

foo.Document = provider.Import("<html><body>All Notes for Project Foo<br/><br/></body></html>")

foo.PrintPreview()

RichTextEditor

answered on 07 Feb 2017

5 answers

332 views

Custom Editor With Multiline TextBox

Hi,

I've written a Custom Editor with a TextBox and two buttons (I simply made few changes at the code of your CustomEditor Demo), it seem to work fine except for the fact that if I set the Multiline propery of the TextBoxItem to true I cannot change the text anymore (I looks like it became ReadOnly), so I suppose it isn't so simple.

How can I write a custom editor that accept multiline text ?

GridView

answered on 06 Feb 2017

5 answers

196 views

Is there a way to determine if a Cell Value is being trimmed

Hi,

I would like to display a ToolTip for a GridView Cell only if the value of the cell is too large to fit within the column width? The ToolTip would be the complete cell value. Normally, the value shows an ellipse when it is trimmed but I can not find a property to indicate this.

Thanks,
Mike

GridView

answered on 06 Feb 2017

2 answers

213 views

Not Selectable ListViewElement

Hi

I want a Not selectable ListViewElement

by not selectable , I mean you can not select it's items

I have it as custom item in a parent listview

ListView

answered on 06 Feb 2017

4 answers

165 views

Only 2 theme availlable ?

Hi,

When I go into the "Property builder" I only have 2 theme available :

> Control Default
> Telerik

What should I do to have more theme available into the dropdown menu (like Office silver or aqua) ?

Thanks in advance for your help.

Treeview

answered on 06 Feb 2017

6 answers

138 views

Right to Left All Items radRibbonbar Form (Normal Form)

Right to Left All Items radRibbonbar Form (Normal Form):

Hi

RibbonBar

answered on 03 Feb 2017

3 answers

259 views

ValueChanged

I have a form with a grid that contains just a combobox and I'm wondering what is the proper way to have that value stick, by stick I mean causing the CellValueChangedEvent, when I select a value in the list and then move to another control.

The relevent events that get fired are:

ValueChanging

ValueChanged

and then the next event is

Leave

I've played around with calling EndEdit, however I don't believe I'm calling it at the right point.

In the _Leave event I get the new row as

var newRow = lstData.CurrentRow as GridViewNewRowInfo, however the Cells["ComboColumn"].Value is null and this is becuase CellValueChanged hasn't fired yet.

-Michael

GridView

answered on 03 Feb 2017

2 answers

157 views

Organisation chart collapse

Hi,

So I am building a dynamic organisation chart using RadDiagram. I have implemented the chart and the expansion of it. But now I would like to be able to collapse it. I have attached a photo to make it easier to explain.

So for example, if I press on 1.2.1 I would like to be able to collapse everything under. I have been able to collapse the shapes one level below only so in this case 1.2.1.1 and 1.2.1.2 using . it. But I am not sure how can I recurse for all the levels under it.

Diagram, DiagramRibbonBar, DiagramToolBox