In my UI I have a RadChartView, holding some ChartSeries; (in my specific case this is a PolarChart holding a PolarPointSeries).

I have an event which triggers when the user clicks one of the points in this series.

void chart_SelectedPointChanged(object sender, ChartViewSelectedPointChangedEventArgs e)

Using this event, I wish to change the graphical styling of the point that the user selects, at the moment it is selected.

It is straightforward to attain the DataPoint that is clicked by the user via

e.NewSelectedPoint;

e.NewSelectedSeries.Children;

I can edit the style of any of these plotted UIChartElements, e.g. setting the first one to some image:

e.NewSelectedSeries.Children[0].BackgroundShape.Image = new System.Drawing.Image("MyImage.png");

I then expected I could edit the graphical styling of the particular point selected by the user using the index of the selected DataPoint:

e.NewSelectedSeries.Children[e.NewSelectedPoint.Index].BackgroundShape.Image = new System.Drawing.Image("MyImage.png)

However, the resulting UIChartElement (e.NewSelectedSeries.Children[e.NewSelectedPoint.Index]) does not correspond to the selected DataPoint (e.NewSelectedPoint); it instead corresponds to one of the other DataPoints in the series.

It appears as though the indexing of e.NewSelectedPointSeries.Children does not correspond to the indexing of e.NewSelectedPoint.DataPoints.

Have I misunderstood the API? Is there a better way of accessing the UIChartElement corresponding to a selected point?

For the record, the attempted approach I outline above works correctly with a previous release of Telerik UI for WinForms (2018.1.116.40), but does not work upon upgrading to a newer version (2018.3.1016.40).

I created the ViewDefinition value of RadGridView using HtmlViewDefinition, and I want to give the Pinned property to the first, second, and third columns.
However, the result is created by duplicating three columns as in the screenshot.

How to fix it?

hi, i use imageEditor  in my winform application, when i run application and try to use crop image with imageEditor the accept and cancel button doesn't shown... like attached picture. please help.

Hello everyone,

Can you please give me some advice? I want to migrate code to Telerik components; there is a class(form) thas has all ui components (textboxes, buttons, etc.) and functionality.

I need to give the user the ability to choose between a radwizard and a tabbedcontrol. But these two need to share the same functionality and ui components. because we don't want to repeat code. We've tried usercontrols, but the code that provides the functionality is so scrambled and depends on data and ui components from differect user controls?

Is there another way to do this? Maybe place the radwizard and tabbed form in a panel?

Thanks in advance,

Adriana

HI

When I want to add radtabbedform I am getting this message "Your project uses GAC referenced assemblies. Please upgrade your project.

Which tool I have to use in order to upgrade?

Thanks

Hi, I have an issue such that when I place my application (which is based on a RadRibbonForm) on to my right hand 4K monitor and then maximise it I get a small amount of "bleed" of my application on to the right hand side of my left monitor.

On inspecting the forms desktop bounds property it see X = 1908, Y = -12, width = 3864, height = 2114. I was expecting X = 1920, Y = 0, width = 3840, height = 2090 which is what is being reported in Screen.AllScreens.

I'm using the lastest version of WinForms and have done what issuggested in this link.

I can reproduce the same behaviour when I run "Demo Application - Telerik UI for WinForms R2 2022 SP1", move it to my large right hand monitor then maximise it.

Do you know of any "easy" way of saving and restoring the main application window size / position in a multi monitor setup with diferrent DPI's? Its a nightmare!

Kind regards
Toby

HI

I have installed the telerik 2022. The issue that I am facing is that the radtabbedform is not showing this issue also with telerik 2021.

can someone to inform me who can I added?

Thank you in advance

Regards

Hello, Telerik users.

It's a red syntax, but it doesn't work. Do you know why?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
using System.Collections;

namespace TEST
{
    public partial class ViewerControl2 : UserControl
    {
        protected bool IsDesignMode { get { return DesignMode || LicenseManager.UsageMode == LicenseUsageMode.Designtime; } }
        private const int ROWCOUNT = 100;
        private const int COLUMNCOUNT = 100;

        public ViewerControl2()
        {
            try
            {
                InitializeComponent();
                if (IsDesignMode) return;

                SetLayout();
                SetEventHandler();
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }


        private void SetLayout()
        {
            try
            {
                this.radGridView1.ShowGroupPanel = false;
                this.radGridView1.VirtualMode = true;
                this.radGridView1.RowCount = 5;
                this.radGridView1.ColumnCount = 19;
                //this.radGridView1.BackColor = Color.Transparent;
                this.radGridView1.ReadOnly = true;
                this.radGridView1.TableElement.DrawFill = false;
                this.radGridView1.TableElement.RowHeight = 50;
                this.radGridView1.TableElement.CellSpacing = 0;
                this.radGridView1.MasterTemplate.ShowRowHeaderColumn = true;
                this.radGridView1.MasterTemplate.ShowColumnHeaders = true;
                this.radGridView1.MasterTemplate.AllowAddNewRow = false;

                createData();

            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private void SetEventHandler()
        {
            try
            {
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private void createData()
        {

            string getData = "SEND;BIT;1;0;0;1;1;0;1;1;1;1;1;1;1;1;1;1;1;1;0;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;0;1;1;1;1;1;1;1;1;1;1;1;0;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;1;0;0;1;1;1;0";

            string[] spstring = getData.Split(';');

            int dataLength = (spstring.Length - 2);

            int horizontal_length = dataLength / 5;

            string[,] lineData = new string[5, horizontal_length];

            int startData = 2;

            for (int j = 0; j < horizontal_length; j++) {

                for (int i = 4; i > -1; i--) {

                    lineData[i, j] = spstring[startData++];

                }
            }

            for (int i = 0; i < 5; i++) {

                for (int j = 0; j < horizontal_length; j++) {

                    this.radGridView1.Rows[i].Cells[j].Style.CustomizeFill = true;

                    this.radGridView1.Rows[i].Cells[j].Style.DrawFill = true;

                    this.radGridView1.Columns[j].HeaderText = j.ToString();

                    if (lineData[i, j] == "1") {

this.radGridView1.Rows[i].Cells[j].Value = 1;
                        this.radGridView1.Rows[i].Cells[j].Style.BackColor = Color.Green;

                    } else {

this.radGridView1.Rows[i].Cells[j].Value = 0;
                        this.radGridView1.Rows[i].Cells[j].Style.BackColor = Color.Black;

                    }
                }
            }
        }
    }
}

Hello everyone,

I'm learning to use Telerik for winforms, but I have an issue with RadHostItem that hosts a Windows TableLayoutPanel that is generated at runtime and the RadHostItem is placed inside a RadDropDownButtonElement on a RibbonBar.

I'm using  RadHostItem.MinSize for the host that contains the TableLayoutPanel but I've tried a lot of ways to size the host height but neither of them is working as desired.

In what units RadHostItem.MinSize is defined?

For example, I have this code:

                Telerik.WinControls.RadHostItem radHost = new Telerik.WinControls.RadHostItem(panel);
                int heightPerRow = panel.GetRowHeights()[0]; // Height of a row in pixels,
                radHost.MinSize = new Size(panel.Width, heightPerRow * headerRow);

                radDropDownButton.Items.Add(radHost);

But this host is very big for the panel and it distorts it.

I'll appreciate any help.

Thanks in advance,

Adriana