I would like to use the ChartView control to create charts of time line data. The SQL database that I am querying against has a data point for every minute for thousands of counters.  For space savings, the application that stores the data does not create a record if the value of the data points is ZERO for that minute.  For this data, that is a savings of more than 75%.

When creating a line chart, is it possible to have RadChartView treat the missing data points with the value of ZERO?  In my test application, ChartView seems to approximate the missing values and simply draws a straight line between the two point that do have a value.  This is not an accurate representation of the data. What I need is from the line chart to go to 0 for the minutes there there is no data.

I've used other charting applications that have this capability.

Chris

Hello
I have some problem with displaying RadGroupBox on HDPI that host in UserControl/System.Windows.Form and must be AutoSize = true.
In our scenario, the RadGroupBox contains RadLabel and must change size depending on the size of the text. So we set AutoSize = true. However such RadGroupBox have incorrect font scaling in the header, the font becomes at least 2 times larger than it should be, and if GB is in the scrolling container (like in the example below) even larger. 

If groupbox is hosted in RadForm the bug is not reproducible. 

I use Telerik 2018.3.1016.20 with .Net 3.5 
I very much rely on your help and advice.

Here are examples of my code and screenshots from different DPI. 

100% (Form) https://c2n.me/3Z4oYcS
100% (RadForm) https://c2n.me/3Z4p2L0
200% (Form) https://clip2net.com/s/3Z4pjSv
200% (RadForm) https://clip2net.com/s/3Z4pbV0

In native WinForm forms, a property called AutoValidate can be changed to EnableAllowFocusChange to allow users to continue to other controls if validation fails for an errorProvider.

I am trying to mimic this behavior with radGridView. Currently, users are unable to move onto other cells or rows, or other controls outside of the gridView until they input correct data into the cell.

I want to be able to allow the user to work on other things, add rows, edit cells on a new row or an existing row, etc without forcing them to input something just to get rid of the validation. Only at the end of the process would I loop through all controls and cells to see if an error exists, and remind the user before they can continue on.

This is so that the user doesn't put in erroneous data into the cell just so they can move on. For example, if they do not know what the account code is for an item, they would have to ask someone else and this may take some time. They should be able to work on other things on the form in the mean time.

I've tried cancelling the editor and calling EndEdit on the current active editor, but this isn't working. Users are still locked in on a cell if validation failed. How do I allow the user to get out of the cell even if an error exists?

See below on what I have tried:

   if (e.Row is GridViewDataRowInfo)
                    {
                        if (detailValidation.IsEmptyInput(((string)e.Value), out errorMsg) || (!detailValidation.IsValidDecimalFormat(((string)e.Value), out errorMsg)))
                        {
                            e.ActiveEditor.EndEdit();
                            e.Cancel = true;
                            var test = e.ActiveEditor as RadTextBoxEditor;

                            currentCell.BackColor = Color.FromArgb(255, 221, 221);
                            ((GridViewDataRowInfo)e.Row).ErrorText = errorMsg;
                            
                           
                        }
                        else
                        {
                            ((GridViewDataRowInfo)e.Row).ErrorText = string.Empty;
                        }
                    }
                   

Hi,

I have this problem:

In a Form with a RadDock, in this RadDock two ToolWindows with one button each and two DocumentWindows. In a DocumentWindow, a RadGridView.

The RadGridView is with the event UserAddingRow:

If you are editing a new row in the RadGridView with the value of "Id" null and you click on a button or in the tab of the other DocumentWindow, you don't stay in the new row. And the UserAddingRow event is fired many time.

Why? How to edit the column "Id" of the new row if you validate by clicking in other control?

Hello everyone,

   When I run WinForm, the interface can perform related operations, but when I operate, the mouse will display refresh status;

how to change the mouse display mode to cursor display;

Hi ,

I used following link.

https://www.telerik.com/support/kb/winforms/gridview/details/creating-a-radradiobuttoncellelement

I want to do readonly for this column . I put readonly = true but still can click radiobutton. May I know how to do this column readonly true.

Thanks

Moe

hi 

i have a problem i want save my data from gridview to dabase including update, deleting a row and adding a row

i populate radgridview from a datatable.

my delete button is click event on a image 

and my addnew row is the button from da radgridview

the add new row works almost fine (the click event are not firing on the images.) but add the row to the database.

the delete "button" remove the row from datagrid but is not working removing from the database only radgrid,

is there way i can add delete and update radgridview and then i press a button and update the database?