I'm using v2015.1.331.40 and if the series I feed my pie chart has 0 for all values AND I have ShowSmartLables = true, then my code just hangs when it tries to render the chart. 

private static void ThisChartHangs()
        {
            Telerik.WinControls.UI.RadChartView chart = null;

            try
            {
                chart = new Telerik.WinControls.UI.RadChartView();
                chart.AreaType = Telerik.WinControls.UI.ChartAreaType.Pie;

                chart.Width = 360;
                chart.Height = 360;
                chart.ShowSmartLabels = true;

                var series = new Telerik.WinControls.UI.PieSeries();
                
                for (int x = 0; x < 8; x++)
                {
                    series.DataPoints.Add(new Telerik.Charting.PieDataPoint(0.0, "Type " + x.ToString()));
                }

                chart.Series.Add(series);

                using (var bmp = new System.Drawing.Bitmap(chart.ClientSize.Width, chart.ClientSize.Height))
                {
                    chart.DrawToBitmap(bmp, chart.Bounds);

                    using (var stream = new System.IO.FileStream(@"c:\temp\NeverRenders.png", System.IO.FileMode.Create, System.IO.FileAccess.Write))
                    {
                        bmp.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
                    }
                }
            }
            catch (Exception ex)
            {
                throw;
            }
            finally
            {
                if (chart != null)
                {
                    foreach (var series in chart.Series)
                    {
                        series.DataPoints.Clear();
                    }

                    chart.Dispose();
                }
            }
        }

Greetings,

I have read/researched in this forum and the documentations but can't find what I need.  So my question:

In treeview control (Both in winform & WPF), do we have option to have multiple selections for nodes?  Shift + click or Ctrl + click shortcuts would be super helpful.

Thanks

John.

I have some old project i did in c# wvidusl studio 2012 pro.

All i have left is the exe file.

I tried to use the Telerik to decompile and get my source code but when i'm adding the code to visual studio and try to build the solution i'm getting a lot of errors all about that there is a square with question mark inside.

I could go and fix error by error but there more then 5000.

Almost every variable replaced with square and question mark inside.

What could it be ? Any way to fix it ? The problem is with the Telerik ?

I have multiple LineSeries that are tied to a common DateTimeContinuousAxes for X and multiple LinearAxes for Y.

So each LineSeries is tied to the common DateTimeContinuousAxis .

Each LineSeries may have its own dedicated Linear Axis OR may share a linear axis with other series.

Its the series that share both x and y axes that are confusing to the user.

To make this visually clear to the user, I have set the color of these line series and the corresponding shared Y axis color to match, so that its obvious that series A, B and C share the same Y axis (say "VOLTS").

But now I have multiple series with the same color. So I need to have the points for each individual series have a different shape so you can easily discriminate between the series.

For example, Series A, B and C all share a common Y Axis, and all three are green in color, but Series A points are a Green Triangle, Series B is a Green Square and Series C is a Green Circle.

Seems pretty straight forward...right?

 I know I can do this on the ScatterSeries, but I see no way to set the Point Shape for a Point in LineSeries. Some thing similar to the example below...

      private void ApplyShapeToPoints(ElementShape shape) 
        { 
            ScatterSeries series = this.radDropDownListSeries.SelectedValue as ScatterSeries; 
 
            foreach (ScatterPointElement point in series.Children) 
            { 
                point.Shape = shape; 
            } 
        } 

But I cant use a scatterseries because my data is time based....

Any ideas?

MG

how to show custom context menu strip on gridview cell

context menu having items "red, green,purple,gray" colors

and when any color is clicked ...then background color of that particular cell should changed to selected color

I have allowed my user to change the number of Rows in a Group residing in a Panorama via a form with a Property Grid (see image 5_Rows.png).  After this value has changed, and the property is updated, all of the existing tiles are pushed together (see image 6_RowsSaved.png).  The only thing that fixes this is if I change the size of the Panorama (which is a child control of a split panel - I am actually just moving the splitter and the tiles seem to refresh after that).

 Can you tell me how I can refresh the tile positions programmatically after I have updated the RowsCount property?

Thanks!

Laura

I want to color a PieChart I made with unique color depending on the legend.

- How can I not change the backcolor of the legend?

- How can I access the legend name with Series[0].Children[0].

Thanks

Hi guys,

I would disable a ComboBox that shows all TimeZones, I would set local time and prohibit to change it.

How can I do?

I attached print screen

Hi there,

How can i link the GanttView control with access data table? I mean how can i build the sql sentence and link to the gantt control?

This is my code below:

        Dim strSQLCa As String
        Dim dsTask As New DataSet

        strSQLCa = "SELECT ID, PARENTID, TITLE, TSTART, TEND, TPROGRESS FROM TASK ORDER BY PROJID, PARENTID, ID"

        Dim adpTC As New OleDb.OleDbDataAdapter(strSQLCa, connPRO)
        dsTask.Tables.Add("TableTask")
        adpTC.Fill(dsTask.Tables("TableTask"))

        Dim data As New DataSet()
        data.Tables.Add("Task")

        Me.RadGanttView1.GanttViewElement.TaskDataMember = "Tasks"
        Me.RadGanttView1.GanttViewElement.ChildMember = "Id"
        Me.RadGanttView1.GanttViewElement.ParentMember = "ParentId"
        Me.RadGanttView1.GanttViewElement.TitleMember = "Title"
        Me.RadGanttView1.GanttViewElement.StartMember = "Start"
        Me.RadGanttView1.GanttViewElement.EndMember = "End"
        Me.RadGanttView1.GanttViewElement.ProgressMember = "Progress"
        Me.RadGanttView1.GanttViewElement.LinkDataMember = "Links"
        Me.RadGanttView1.GanttViewElement.LinkStartMember = "StartId"
        Me.RadGanttView1.GanttViewElement.LinkEndMember = "EndId"
        Me.RadGanttView1.GanttViewElement.LinkTypeMember = "LinkType"

        Me.RadGanttView1.GanttViewElement.DataSource = dsTask.Tables("TableTask")

        Me.RadGanttView1.Columns.Add("Start")
        Me.RadGanttView1.Columns.Add("End")

And I'm getting the following error:

 "Child list for field Tasks cannot be created."

Please can you guys help me with this?

Thank you in advance.

Jorge

I've been working with the RadRichTextEditor control in my application. It imports and exports simple html -- as I only need things like bold, italics, centering. However, even if I set the FontFamily of the RadRichTextEditor and even the RichTextBoxElement within to Arial, it doesn't respect that when I paste in plain text from an application like Notepad. It changes the text to Verdana with a font size of 12.

 If I copy and paste text from Word, I am fine. It keeps whatever font is was in Word. 

 Additionally, if I use the keyboard and hit shift + enter to give me a single line break (</ br>), It wraps that html with a style tag with the Verdana 12 font. I don't mind the style tag, but it would be nice if it respected the current font where the cursor is.

 Any ideas?

Here is my font properties code (which is overkill, but I'm trying everything to fix this).