Multiple Sliders on Track Bar

[Bradley Lane]

Hi,

I need something similar to your Silverlight/WPF RadSlider but for WinForms..

Is it possible to have multiple sliders on your WinForms RadTrackBar or do I need to put a wrapper around your WPF Slider?

Thanks,
Brad

[Victor]

Hi Bradley,

Thank you for the question.

The WIinForms TrackBar does not support multiple sliders. I have logged this feature for future implementation. You can nevertheless use the WPF slider, as you have suggested.

Write back if you have other questions.

Regards,
Victor
the Telerik team

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[Nebras]

Is it supported now?

[Ivan Petrov]

Hello Nebras ,

Thank you for writing.

This particular functionality is not supported. However, if more people are interested in it, we will consider implementing it.

Best wishes,
Ivan Petrov
the Telerik team

[Bradley Lane]

Hi,

It was logged as a feature for future implementation back in June 2009.
I'm guessing it must have been logged as a very low priority!

I have been using the WPF one; it works quite nicely in WinForms.

Cheers,
Brad

[Nikolay]

Hi Bradley,

This feature has a lower priority compared to the priority of other important features and fixes that we have scheduled in our To-Do list. You can increase the priority of the requested functionality by voting for it here. I am glad to hear that you find our RadSlider for WPF useful.

Kind regards,
Nikolay
the Telerik team

[George]

Hi, can anyone please explain to me how the WPF slider control can be added to a winform application?  I really cannot find any reference to it.

Thanks,

[Bradley Lane]

Hi George,

Below is a small snippet from my code. But basically you need to put the control in an ElementHost Object. Look in your Visual Studio Toolbox under WPF Interoperability to add ElementHost via the designer. Below example adds ElementHost at runtime to a Panel and starts setting up a few events...

private ElementHost CtrlHost;
private RadSlider WpfSliderControl;

// Winforms UserConstrol Constructor
public WpfSlider( )
{
    InitializeComponent( );
    WpfSliderControl = new RadSlider( );
}

private void WpfSlider_Load( object sender, EventArgs e )
{
    // Create Host and Add to WinForms Panel
    CtrlHost = new ElementHost( );
    CtrlHost.Dock = DockStyle.Fill;
    panelSlider.Controls.Add( CtrlHost );

    // Create Slider and add to Host
    CtrlHost.Child = WpfSliderControl;

    // Add Slider Event(s)
    WpfSliderControl.Loaded += WpfSliderControlLoaded;
    WpfSliderControl.ValueChanged += WpfSliderControl_ValueChanged;
    WpfSliderControl.DragCompleted += WpfSliderControl_DragCompleted;
    WpfSliderControl.AddHandler( RepeatButton.ClickEvent, new RoutedEventHandler( slider_Click ), true );
}

[George]

Thanks Bradley, really appreciate your prompt input. I tried this but I get an error that the radcontrol cannot be coverted to a win forms control in the following line:

// Create Slider and add to Host

    CtrlHost.Child = WpfSliderControl;

I probably have my reference assemblies wrong. If you are so kind what additional references did you add to your project to work, .net or telerik ones?

Thank you very much.

Regards,

George

[Bradley Lane]

Hi George,

I would recommend dropping an ElementHost control onto a blank form... it will automatically add the following .NET References for you: PresentationCore, PresentationFramework, UIAutomationProvider, WindowsBase and WindowsFormsIntegration.

You will also need the Telerik.Windows.Controls Reference for the WpfSliderControl.

in my code behind I'm using the following using:

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls.Primitives;
using System.Windows.Forms;
using System.Windows.Forms.Integration;
using System.Windows.Media;
using Telerik.Windows.Controls;
using TickPlacement=Telerik.Windows.Controls.TickPlacement;

Hope this helps.

Cheers,
Brad

[George]

Thank you very much, it works fine now. Really appreciate your feedback.

Regards,

George

[Ivan Petrov]

Hi guys,

Thank you both for writing.

I am glad you have found a solution to the problem at hand. 

I have updated Bradley's Telerik points for sharing his knowledge and helping the Telerik community.

I you have further questions, do not hesitate to write back.
 
Kind regards,
Ivan Petrov
the Telerik team

[George]

Dear Ivan,

You guys have to consider to implement something more sexy in your library with regard to the functionality of slider controls. I am in a need for a multithumb slider, more than two thumbs, and the only solution I have found was in another vendors library. Given the steep price charged I had to choose either to continue my subscription with Telerik, or pay the other vendor for a subscription even if I only needed a single control.

Furthermore, it would be nice if the functionality of WPF and WEB controls was also available in windows forms, there are still a bunch of us, oldtimers, still developing applications for this form..

[Ivan Petrov]

Hi George,

Thank you for your suggestion.

We are planning an update to our RadTrackBar control and we would really appreciate it if you would share your ideas and feedback regarding what you would expect from a track bar control. Also can you please share the scenario where you would use a track bar with multiple thumbs.

Looking forward to your reply.
 
Regards,
Ivan Petrov
the Telerik team

[George]

Dear Ivan,

A multiple thumbs trackbar could be useful in situations like the one I am facing in the project I am currently working on. There is a need for the end user to specify two adjacent time periods in monthly intervals e.g. one period starting from May-2013 and ending Aug-2015 and a second adjacent period starting from Sep-2015 and ending Jan-2020. Another example could be for the needs of project implementation timetable were multiple executional steps are adjacent to each other and need to be adjusted in a flexible manner.

A multiple thumbs trackbar, with three sliders, is the most user friendly way to present this choice to the end user, having in mind that there is a need to display certain changes in the environment as selected values are changed. This scenario is rather cumbersome to implement using traditional data input controls.

[Ivan Petrov]

Hi George,

Thank you for your reply.

We really appreciate your feedback and we will take it into consideration when we implement our improvements.

I have updated your Telerik points for the detailed use case in your post.

If you have other questions, do not hesitate to write back.
 
All the best,
Ivan Petrov
the Telerik team

[Bruce]

Was this feature ever implemented, the feature voting system referenced in the post is now a dead link (http://www.telerik.com/support/pits.aspx#/public/winforms/5394).

[Dimitar]

Hi Bruce,

This is supported now. Here is the link to the feature in the new portal: ADD Multiple sliders.

Here is the documentation about this: Modes | RadTrackBar.

I hope this will be useful. Let me know if you have additional questions.

Regards,
Dimitar
Progress Telerik