Questions on UI for WinForms Forum

1 answer

362 views

Is it possible to add your own operators to the list of valid radvalidatorprovider's own operators. I have a requirement for two operators:

1. See if a value is already contained with a Dictionary object, if so the operator should cause the validation to fail.

2. See if a folder path specified in a textboxcontrol exists on dick. If not, then the validation should fail.

I know I could do this in code, and simply display a dialog stating the error, but I want consistent validation reporting throughout my application.

ValidationProvider

answered on 16 Jun 2021

1 answer

172 views

[Solved] Customizing RadGridView Filter Box

Greetings,

Is there a way to hide some of the items of the radgridview filter box, or not showing the filter icon at all (marked with red circles in the attached picture) ?

GridView

answered on 16 Jun 2021

3 answers

719 views

How to have a custom tooltip when hovered over a datapoint?

Hi ,

I am having a range bar series. When hovered over a range data point i need to get the plot value and display as a tooltip of that hovered data point. Attached is the sample code , where i need to capture range data point.

        private void radChartView1_ToolTipTextNeeded(object sender, Telerik.WinControls.ToolTipTextNeededEventArgs e)
        {
            RadChartElement element = (RadChartElement)sender;
            //RangeDataPoint dataPoint = (RangeDataPoint)element.;//var item = sender as RadChartElement;//if (item != null)//{//    var dataItem = item.DataPoint as RangeDataPoint;//    e.ToolTipText = dataItem.High.ToString();//}//e.ToolTipText = "Hi";
        }
 

    private void LoadBarChart()
        {
            chart.View.AreaType = ChartAreaType.Cartesian;
            chart.AngleTransform = 90;
            RangeBarSeries rangeBarSeries = new RangeBarSeries();

    
           rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 14, DateTime.Now.TimeOfDay.TotalMinutes + 10, "5/17/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/17/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 4, DateTime.Now.TimeOfDay.TotalMinutes + 2, "5/17/2021"));


            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 30, DateTime.Now.TimeOfDay.TotalMinutes + 10, "5/18/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/18/2021"));

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 4, DateTime.Now.TimeOfDay.TotalMinutes + 2, "5/19/2021"));

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes - 89, DateTime.Now.TimeOfDay.TotalMinutes - 100, "5/20/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/20/2021"));

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes - 79, DateTime.Now.TimeOfDay.TotalMinutes - 90, "5/21/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/21/2021"));

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 14, DateTime.Now.TimeOfDay.TotalMinutes + 10, "5/22/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/22/2021"));


            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 14, DateTime.Now.TimeOfDay.TotalMinutes + 10, "5/23/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/23/2021"));

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 14, DateTime.Now.TimeOfDay.TotalMinutes + 10, "5/25/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/24/2021"));

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 14, DateTime.Now.TimeOfDay.TotalMinutes + 10, "5/26/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "5/26/2021"));

            CategoricalAxis horizontalAxis = new CategoricalAxis();
            horizontalAxis.ClipLabels = false;
            horizontalAxis.ShowLabels = false;
            //horizontalAxis.LabelRotationAngle = -90;//horizontalAxis.LabelFitMode = AxisLabelFitMode.Rotate;

            horizontalAxis.PlotMode = AxisPlotMode.BetweenTicks;
            rangeBarSeries.HorizontalAxis = horizontalAxis;

            chart.View.Series.Add(rangeBarSeries);
            chart.View.ShowToolTip = true;
            chart.View.ShowTrackBall = true;
            ChartTooltipController tooltipController = new ChartTooltipController();
            tooltipController.DataPointTooltipTextNeeded += tooltipController_DataPointTooltipTextNeeded;
            this.chart.View.Controllers.Add(tooltipController);

            rangeBarSeries.VerticalAxis.LabelFormatProvider = new MyFormatProvider();
            rangeBarSeries.VerticalAxis.ClipLabels = false;
            rangeBarSeries.VerticalAxis.LabelRotationAngle = -45;
            rangeBarSeries.VerticalAxis.LabelFitMode = AxisLabelFitMode.Rotate;

            LinearAxis verticalAxis = chart.View.Axes.Get<LinearAxis>(1);
            verticalAxis.Minimum = 0; //Minutes 0:00
            verticalAxis.Maximum = 1380; //Minutes 23:00
            verticalAxis.MajorStep = 60; //60 minutes in an hour
        }
 
 private void tooltipController_DataPointTooltipTextNeeded(object sender, DataPointTooltipTextNeededEventArgs e)
        {
            RangeDataPoint dp = e.DataPoint as RangeDataPoint;
            if (dp != null)
            {
                e.Text = dp.High + " " + dp.Low;
            }
        }

ChartView

answered on 15 Jun 2021

1 answer

173 views

[Solved] How to set a fixed width to the bar in rangebarseries ?

I wanted to set the width to a fixed size for bar rather than auto width set by telerik

ChartView

answered on 15 Jun 2021

1 answer

186 views

[Solved] I have one more clarification while setting the chart . SetContentCore() method gets called repeatedly when i try to resize the Radgridview . Any way/event to cancel this call ?

I have created a RadGridView and added custom column to display ChartView in it. I am using SetContentCore method to filter data for each row.

The above feature works fine, but I face one problem. Whenever we try to resize the parent window manually, the SetContentCore method getting called repeatedly which in turn creates multiple chart element within one column.

Please help to find which event triggers this method call, so that I can disable the same.

ChartView

GridView

answered on 15 Jun 2021

1 answer

238 views

How to disable Zoom on radmap when mouse clicked or scrolled?

I would like to prevent users from zooming in/out on RadMap.

Is there any way to disable the zooming option?

Map

answered on 15 Jun 2021

1 answer

166 views

[Solved] RadGridView - Telerik.WinControls.GridView(2015.1.331.40) e.CellElement.BackColor =Color.Red; not working

Hi ,

I am using RadGridView - Telerik.WinControls.GridView(2015.1.331.40) and using CellFormating event . The backcolor doesnt work here whereas the forecolor works . Am i missing anything ?

The code attached:

   private void radGridView1_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
        {
            // e.CellElement.ForeColor works though
             e.CellElement.BackColor = Color.Red;
            
        }

GridView

answered on 14 Jun 2021

1 answer

156 views

[Solved] Have a grid of 3 columns with 2 columns as Text and 3rd as a chart in Telerik 2015 WinForms

Hi ,

I am trying to create a page with 3 columns. Date and Percent are the first 2 columns . The 3rd column will be a range bar chart where the time span across 24 hours will be in x-axis (orientation to the top) and the date again will be on the left (we can hide the label) . It might not necessarily be a gridview , but if it is that would be great . Let me attach the mock , I tried to do the 2 columns separately and the chart separately but wanted to integrate it as a single grid .

Much appreciated for the help in advance.

Sample Code that i did to achieve the chart (Grid view is pretty straight forward and ignored in the below code):

  private void LoadBarChart()
        {

            this.radChartView1.AreaType = ChartAreaType.Cartesian;
            this.radChartView1.ChartElement.AngleTransform = 90;
            RangeBarSeries rangeBarSeries = new RangeBarSeries("End Time", "Start Time", "Summarization Date");

            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 14, DateTime.Now.TimeOfDay.TotalMinutes + 10, "6/8/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "6/8/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 4, DateTime.Now.TimeOfDay.TotalMinutes + 2, "6/8/2021"));


            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 30, DateTime.Now.TimeOfDay.TotalMinutes + 10, "6/7/2021"));
            rangeBarSeries.DataPoints.Add(new RangeDataPoint(DateTime.Now.TimeOfDay.TotalMinutes + 7, DateTime.Now.TimeOfDay.TotalMinutes + 5, "6/7/2021"));



            CategoricalAxis horizontalAxis = new CategoricalAxis();

            //horizontalAxis.Title = "Summarization Days";
            horizontalAxis.ClipLabels = false;
            horizontalAxis.LabelRotationAngle = -90;
            horizontalAxis.LabelFitMode = AxisLabelFitMode.Rotate;

            horizontalAxis.PlotMode = AxisPlotMode.BetweenTicks;
            rangeBarSeries.HorizontalAxis = horizontalAxis;


            this.radChartView1.Series.Add(rangeBarSeries);

            rangeBarSeries.VerticalAxis.LabelFormatProvider = new MyFormatProvider();
            //rangeBarSeries.VerticalAxis.Title = "Time of the day";
            rangeBarSeries.VerticalAxis.ClipLabels = false;
            rangeBarSeries.VerticalAxis.LabelRotationAngle = -90;
            rangeBarSeries.VerticalAxis.LabelFitMode = AxisLabelFitMode.Rotate;

            LinearAxis verticalAxis = radChartView1.Axes.Get<LinearAxis>(1);
            verticalAxis.Minimum = 0; //Minutes 0:00
            verticalAxis.Maximum = 1380; //Minutes 23:00
            verticalAxis.MajorStep = 60; //60 minutes in an hour

            CartesianArea area = this.radChartView1.GetArea<CartesianArea>();
            area.ShowGrid = true;

            CartesianGrid grid = area.GetGrid<CartesianGrid>();
            grid.DrawVerticalStripes = true;
            grid.DrawHorizontalStripes = false;
        }


        public class MyFormatProvider : IFormatProvider, ICustomFormatter
        {
            public object GetFormat(Type formatType)
            {
                return this;
            }
            public string Format(string format, object arg, IFormatProvider formatProvider)
            {
                int totalminutes = Convert.ToInt32(arg);

                TimeSpan timeSpan = TimeSpan.FromMinutes(totalminutes);

                return timeSpan.ToString(@"hh\:mm");
            }
        }

ChartView

GridView

answered on 11 Jun 2021

4 answers

437 views

[Solved] How do you format the label in y axis from total minutes to hh:mm?

I am trying to implement a RangeBarSeries chart where time in y axis and date in x axis . The time here will be total minutes ranged against.

Example 1876 to 18:30 but only for label purpose and not for actual calculation.

Image 2

ChartView

answered on 11 Jun 2021

1 answer

189 views

Custom PropertyGridItemElement

I created ItemElementBlank class that is used for two separate types in the property editor. I want to display no text next to the property label. It works properly when properties are collapsed. When one of the properties are expanded seems that my display element is used in the wrong row ("Odstęp linii" instead of "Alarm"). I coloured the control to a yellow gradient for a better view.

PropertyGrid

answered on 11 Jun 2021