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3 answers
562 views

Want the image for each option to be before the text of the option

 

myDropDownList.Items.Add(new RadCheckedListDataItem("USA", false) { Image = Properties.Resources.USAFlag });

Tried every version of TextImageRelation.ImageBeforeText and DisplayStyle.Image I could find and nothing seemed to help.

 

Dess | Tech Support Engineer, Principal
Telerik team
 answered on 06 May 2020
4 answers
299 views

I need the horizontal axis to be linear in the chart. For example:

    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            MakeChart();
        }

        private DataTable _dtChart;

        private void MakeChart()
        {
            _dtChart = new DataTable("Chart");
            var column = new DataColumn("COLUMN0", typeof(DateTime));
            _dtChart.Columns.Add(column);
            column = new DataColumn("COLUMN1", typeof(double));
            _dtChart.Columns.Add(column);
            column = new DataColumn("COLUMN2", typeof(double));
            _dtChart.Columns.Add(column);
            column = new DataColumn("COLUMN3", typeof(double));
            _dtChart.Columns.Add(column);
            _dtChart.BeginLoadData();
            var row = new object[_dtChart.Columns.Count];
            var date = new DateTime(2007, 1, 1);
            row[0] = date; row[1] = 14.163764; row[2] = 13.56391907;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(1); row[1] = 14.16415691; row[2] = 13.56490612;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(2); row[1] = 14.16449642; row[2] = 13.56572723;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(3); row[1] = 14.16489506; row[2] = 13.56701374;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(4); row[1] = 14.16524887; row[2] = 13.56779575;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(5); row[1] = 14.16561508; row[2] = 13.56877995;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(6); row[1] = 14.1659956;  row[2] = 13.56987286; row[3] = 12.9375058;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(7); row[1] = 14.16635513; row[2] = 13.57107353; row[3] = 12.93832116;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(8); row[1] = 14.16672421; row[2] = 13.57207203; row[3] = 12.93914642;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(9); row[1] = 14.16709232; row[2] = 13.57329559; row[3] = 12.93998154;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(10); row[1] = 14.1674614;  row[2] = 13.57457256; row[3] = 12.94082651;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(11); row[1] = 14.16784954; row[2] = 13.57580566; row[3] = 12.94168131;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(12); row[1] = 14.16822338; row[2] = 13.57705879; row[3] = 12.94254593;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(13); row[1] = 14.16857815; row[2] = 13.57775879; row[3] = 12.9441519;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(14); row[1] = 14.16896725; row[2] = 13.57868004; row[3] = 12.94503586;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(15); row[1] = 14.16935158; row[2] = 13.5797205;  row[3] = 12.94592957;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(16); row[1] = 14.16974831; row[2] = 13.58084583; row[3] = 12.94683301;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(17); row[1] = 14.17011547; row[2] = 13.58196545; row[3] = 12.94774618;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(18); row[1] = 14.17047501; row[2] = 13.58280563; row[3] = 12.94866904;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(19); row[1] = 14.17082119; row[2] = 13.58374691; row[3] = 12.94960158;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(20); row[1] = 14.17117214; row[2] = 13.58471298; row[3] = 12.95054378;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(21); row[1] = 14.17156029; row[2] = 13.5856638;  row[3] = 12.95149562;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(22); row[1] = 14.17191505; row[2] = 13.58641052; row[3] = 12.95245707;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(23); row[1] = 14.17225742; row[2] = 13.58718204; row[3] = 12.95342813;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(24); row[1] = 14.1726265;  row[2] = 13.58848;    row[3] = 12.95440876;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(25); row[1] = 14.17300701; row[2] = 13.5894928;  row[3] = 12.95539896;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(26); row[1] = 14.17333603; row[2] = 13.59065437; row[3] = 12.95639868;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(27); row[1] = 14.17368698; row[2] = 13.5917902;  row[3] = 12.95740793;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(28); row[1] = 14.17403889; row[2] = 13.59270477; row[3] = 12.95842667;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(29); row[1] = 14.17442799; row[2] = 13.59344292; row[3] = 12.95945488;
            _dtChart.Rows.Add(row);            
            row[0] = date.AddDays(30); row[1] = 14.17476845; row[2] = 13.59449482; row[3] = 12.96049254;
            _dtChart.Rows.Add(row);            
            _dtChart.EndLoadData();
            var horizontalAxis = new LinearAxis {Title = "Ln"};
            var verticalAxis = new LinearAxis
            {
                AxisType = AxisType.Second,
                Title = "Value"
            };
            var lineSeria = new LineSeries
            {
                DisplayMember = "COLUMN1",
                ValueMember = "COLUMN2",
                VerticalAxis = verticalAxis,
                HorizontalAxis = horizontalAxis,
            };
            radChartView1.Series.Add(lineSeria);
            radChartView1.DataSource = _dtChart;
            radChartView1.Refresh();

        }

    }

But nothing is drawn on the chart, and the range of the horizontal axis is wrong.

What am I doing wrong?

Nadya | Tech Support Engineer
Telerik team
 answered on 04 May 2020
1 answer
182 views

Hi,

 

I'm trying to set the focus on the first control of my tab when user switches between tab. To do that, I'm using the eventhandler SelectedTabChanged and put something like that:

private void radTabbedFormControl1_SelectedTabChanged(object sender, EventArgs e)
{
    textBox8.Focus();
}

 

 

 

But unfortunately, I can see that my control take the focus but immediatly lose it after.

Can you tell me how I can achieve that ? The final goal is to restore the focus state when the user is switching between tab, so he don't have to do an useless click with mouse to continue to work.

Thanks

Best Regards

Nadya | Tech Support Engineer
Telerik team
 answered on 04 May 2020
1 answer
142 views

I need to draw a series of graphs and show the legend. When the legend does not fit in the radchartview, a scroll bar appears - this is acceptable, you can quickly see the whole legend. But the title of the legend is cut off in half - the visual reproduction of the picture is sharply reduced.

In addition, if such a graph is exported to a file (ExportToImage), then we get an image containing a scroll bar. And why do you need a scroll bar in the exported drawing? We cannot use it here. In fact, we received a printscreen, not a normal export. I would like to export more intellectually for such cases.

 

Nadya | Tech Support Engineer
Telerik team
 answered on 01 May 2020
1 answer
363 views

By default, a legend is always drawn in a square shape. But it is very not convenient for LineSeries. Because in the legend you need to show not only the color, but also the type of line.

You can, of course, create your own ElementShape (https://www.telerik.com/forums/change-shape-of-items-in-legend). But there is very little space (bounds.Width = 10 pixels) and it is impossible to qualitatively draw a line of a certain type, for example, an extra-long dotted line. 

If you try to draw outside the bounding box, then the chart either always cuts everything outside the bounds of this rectangle (ChartElement.LegendElement.StackElement.Orientation = Orientation.Vertical), or partially and not quite right (ChartElement.LegendElement.StackElement.Orientation = Orientation.Horizontal)

Example:

 

        private void LegendElement_VisualItemCreating(object sender, LegendItemElementCreatingEventArgs e)
        {
            e.ItemElement = new LegendItemElement(e.LegendItem);
            e.ItemElement.MarkerElement.Shape = new LineShape();
        }

    public class LineShape : ElementShape
    {
        public override GraphicsPath CreatePath(Rectangle bounds)
        {
            var path = new GraphicsPath();
            var rect = new Rectangle(bounds.X - 50, bounds.Y + bounds.Height / 2, bounds.Width + 50, 2);
            path.AddRectangle(rect);
            return path;
        }
    }

What is the result drawn on the legend - see the attached image.

Obviously, the logic of drawing a legend for LineSeries, should be completely different. Current version - definitely not satisfied

Dess | Tech Support Engineer, Principal
Telerik team
 answered on 01 May 2020
4 answers
312 views

Hi, 

I'm using RadMessgeBox during the load of my application (SpashScreen).The messages box appears behind the splash.

Is there a way to show them in topmost ?

NB : I don't want to use the shown event of the form, cause the messages box are in objects, not directly in the class form.

thanx :)

Nadya | Tech Support Engineer
Telerik team
 answered on 30 Apr 2020
7 answers
1.5K+ views

Hello I need to programmatically change the colors of a cell specified by its index , i.e. not the selected cell.

I know that the colors can/must be set on the cellelement but I have not found how to get the cellelement of a cell by it's index (or column name) in the currentrow

    e.currentrow(7).cellelement does not exists

and I have tried   e.CurrentRow.Cells(7).style.BackColor=Color.Blue but it has no effects

Thanks in advance

Pierre-Jean

Nadya | Tech Support Engineer
Telerik team
 answered on 30 Apr 2020
1 answer
922 views
I'm trying to add a checkbox to all column headers of a GridView, however I cannot see an easy way to accomplish it.  Basically, I have a dynamically generated set of columns (which each can contain a different editor).  I want a checkbox in the header cell which will allow me to enable/disable that column, however I cannot see a way to do it (I basically want to replicate the 'EnableHeaderCheckBox' functionality of the GridViewCheckBoxColumn, except on all columns regardless of data type).  Can anybody offer any advice on how this can be acheived?
Dess | Tech Support Engineer, Principal
Telerik team
 answered on 30 Apr 2020
3 answers
76 views

is it possible to drop a hyperlink object - as a custom cell, no doubt - into a virtual grid

I downloaded the example from another post in this forum but it was for a checkbox

I found a HyperlinkElement but it is calling for the specific row and column before instantiating

any assistance is greatly appreciated

Dess | Tech Support Engineer, Principal
Telerik team
 answered on 30 Apr 2020
1 answer
213 views

Hi I am developing an application where Image URLs are saved onto a SQL database (Local paths) The images are in a JPEG/PNG format. Would it be possible to get the Image URLs from the database and insert them into the carousel? If so please can I get some help on how to do so :)

Kind regards

Nadya | Tech Support Engineer
Telerik team
 answered on 29 Apr 2020
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