Questions on UI for WinForms Forum

1 answer

84 views

RadRangeSelector: not properly sorted and not stacked

Hi

I am playing with the RadRangeSelector. I have associated it to an existing chart. The chart is dynamically filled using data from the database.

In the image here below, the top control is a RadRangeSelector, the bottom control is a RadChartView.

Notice that my bottom chart shows series as stacked. How can I get the RadRangeSelector also showing stacked series?

Also notice that the dates are not inlined between top and bottom. How can the RadRangeSelector be sorted by dates (as my chart is showing)?

ChartView

RangeSelector

answered on 15 Nov 2023

1 answer

132 views

Get the Axis value from radRangeSelector

Hi,

I have chartview and radRangeSelector.

The question is: how can I get the Axis label values for from radRangeSelector for the start and end zoom.

Hope I can get help soon.

/Omar

ChartView

RangeSelector

answered on 30 Aug 2022

1 answer

119 views

RadRangeSelector in Telerik UI for WinForms can not make Two-Way binding.

I found this thread https://www.telerik.com/forums/binding-to-rangestart-and-rangeend-of-radrangeselector that RadRangeSelector's StartRange and EndRange has been changed when data object changed.

Data object can not change when I change RadRangeSelector's StartRange and EndRange by UI.

Followed as my sample code:

public partial class Form2 : Form

{

private readonly RangeDataObject dataObject = new RangeDataObject { StartRange = 0, EndRange = 100 };

public Form2()

{

this.InitializeComponent();

this.radRangeSelector1.DataBindings.Add(

new Binding("StartRange", this.dataObject, "StartRange", false, DataSourceUpdateMode.OnPropertyChanged));

this.radRangeSelector1.DataBindings.Add(

new Binding("EndRange", this.dataObject, "EndRange", false, DataSourceUpdateMode.OnPropertyChanged));

}

private void Form2_Load(object sender, EventArgs e)

{

}

public class RangeDataObject : INotifyPropertyChanged

{

private float startRange;

private float endRange;

public event PropertyChangedEventHandler PropertyChanged;

public float StartRange

{

get { return this.startRange; }

set

{

if (this.startRange != value)

{

this.startRange = value;

this.OnPropertyChanged("StartRange");

}

public float EndRange

{

get { return this.endRange; }

set

{

if (this.endRange != value)

{

this.endRange = value;

this.OnPropertyChanged("EndRange");

}

protected virtual void OnPropertyChanged(string propertyName)

{

if (this.PropertyChanged != null)

{

this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));

}

RangeSelector

answered on 04 Jan 2021

3 answers

102 views

The range setting is not working

The setting does not work when the range is left at its default setting.
Setting does not work when only one default setting is modified.

version: 2019.2.618.40

RangeSelector

answered on 26 Nov 2020

1 answer

163 views

Can RangeSelector binding two ChartView at the same time?

I have two ChartView, one displaying moving average indicators and the other displaying other technical indicators, which have the same timeline.

How can I using one RangeSelector to control the two ChartView at the same time.

RangeSelector

answered on 25 Nov 2020

1 answer

123 views

Horrific crashing. What have I done wrong?

I was receiving exceptions when attempting to set range at runtime on the range selector.

System.NullReferenceException
HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=Telerik.WinControls.ChartView
StackTrace:
at Telerik.Charting.CombinedBarSeriesRoundLayoutStrategy.ApplyLayoutRoundingVertical(LayoutContext context)

So I stripped the form out of the main project and I've put it into a sample application. Commenting out lines 13 and 14 of FrmPerformanceChart.cs leads to different levels of nightmare.

Link to project is sample: testchart

RangeSelector

answered on 17 Sep 2019

1 answer

61 views

Lost range location after the form size changed

Hello,

I use range seletor to associate with a radchartview.

If I associate the RadChartView control to RadRangeSelector both in design time and in program (in the function "form_load"), there is a strange behavior.

After I changed the form size, the range selector will initialize start range and end range by which means it cannot memorize the start/end range set by the movement.

However, if I only do "Me.radRangeSelector1.AssociatedControl" ONCE in the design time or in the program, the problem will be disappeared.

In my opinion, there is a bug in RadRangeSelector. It cannot support AssociatedControl 2 times. This issue doesn't appear for the other proprieties, even I set the other proprieties both in design time and in program.

I made a simple demo, please download here:

https://www.dropbox.com/s/u61lk7yql1ua25f/TestRangeSelector.rar?dl=0

In order to reproduce the issue:

step 1. launch the demo

step 2. move range selector

step 3. change the form size

You will see the range selector return to its original location.

You can remove this line in RadForm1_Load:

RadRangeSelector1.AssociatedControl = RadChartView1

Or remove the associated control in design time. You will find range selector can memorize the location all the time.

It makes us lot of time to find out. If it is a bug, please correct it. If it is not, any explication ?

Thank you by advance.

Regards,

RangeSelector

answered on 07 Mar 2019

3 answers

93 views

Lost mouse movement of RadRangeSelector during real time updating

Hello,

My RadRangeSelector associates to a RadChartView.

The RadChartView updates in real time, likewise for the RadRangeSelector by using:

RadRangeSelector1.RangeSelectorElement.InitializeElements()

RadRangeSelector1.RangeSelectorElement.ResetLayout(True)

Two controls update perfectly.

But if I move the RangeSelector or RangeSelectorScrollElement to change the range of the chart during updating, the move is very difficult.

Some time I cannot drag the selector or I cannot keep dragging for long time. It seems the mouse move event has been blocked for a while during the update.

But when I stop the update, it works ok.

The dragging is more smoothly for the static data chart than live data chart.

You can find the demo here:

https://www.dropbox.com/s/ag04nuonewr0y4a/TelerikWinFormsApp1.rar?dl=0

Thank you by advance.

Regards

RangeSelector